CN106130010A - Coal Mining Power Distribution System Dynamic Simulation Method - Google Patents

Coal Mining Power Distribution System Dynamic Simulation Method Download PDF

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Publication number
CN106130010A
CN106130010A CN201610508990.9A CN201610508990A CN106130010A CN 106130010 A CN106130010 A CN 106130010A CN 201610508990 A CN201610508990 A CN 201610508990A CN 106130010 A CN106130010 A CN 106130010A
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phase
switch
binding post
phase switch
circuit
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CN106130010B (en
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王清亮
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Xian University of Science and Technology
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Xian University of Science and Technology
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a kind of Coal Mining Power Distribution System Dynamic Simulation Method, the Coal Mining Power Distribution System dynamic simulator system used includes high-voltage power supply circuit and low voltage feeder circuit, and for the magnetic powder brake of fictitious load and the fault simulation circuit that is connected with high-voltage power supply circuit or low voltage feeder circuit；High-voltage power supply circuit is connected with 380V civil power transmission line of electricity, low voltage feeder circuit includes reduction voltage circuit and the low voltage feeder branch road being connected with reduction voltage circuit, and the harmonic source being all connected with reduction voltage circuit and low voltage feeder branch road, magnetic powder brake is connected with low voltage feeder branch road；High-voltage power supply circuit includes booster transformer T1, high voltage supply circuit and zero-sequence reactor ARC, and reduction voltage circuit is made up of step-down transformer T2, and fault simulation circuit includes gradually changeable leakage analog circuit and short circuit analog circuit.The method step of the present invention is simple, has modeling ability flexible, dynamic, the verity of dynamic analog result and practical, and using effect is good.

Description

Coal Mining Power Distribution System Dynamic Simulation Method
Present patent application is on 03 22nd, 2015 applying date, application number 201510125817.6, innovation and creation name It is referred to as the divisional application of the application for a patent for invention of " Coal Mining Power Distribution System dynamic simulator system and method ".
Technical field
The invention belongs to colliery and supply safe distribution of electric power technical field, be specifically related to a kind of Coal Mining Power Distribution System dynamic analog side Method.
Background technology
Underground coal mine is typical explosive atmosphere, the operation side of the commonly used neutral non-effective grounding of its electric power system Formula.Owing to mine power utilization environment is severe, work surface supply line and equipment are susceptible to the faults such as electric leakage, ground connection, short circuit, by event The high temperature, the electric spark that draw caused by barrier are the main burning things which may cause a fire disaster causing explosion accident to occur, and once explode, and directly threaten all wells The life security of lower staff, and cause severe social influence and great economic loss, therefore coal production is to power supply Safety and reliability require the highest.Apply the various protection systems in down-hole that tripping and malfunction often occur, develop new Mining relay protection new principle and new technique are extremely urgent, and new principle must be by means of capable with the research and development of new technique Test platform, various mining power supply new equipments the most also must be tested.
Owing to the operation characteristic of mine power supply system with ground power supply system differs greatly, there is presently no a kind of effectively pin The dynamic simulator system unique to mine power supply.Existing analog systems mainly has two ways, and one is to use various commercializations The numerical model of mine power supply system built on computers by simulation software, completes to simulate and real by solving the differential equation Testing, this analogue simulation environment is to build under complete ideal conditions, it is achieved simple, but with the operation of down-hole actual power system Situation is widely different, and the dynamic physical characteristic of fault and equipment that many has gradually changeable feature cannot be simulated, analogue simulation Experimental result is only as to the Preliminary study of mine power supply system and reference.The second analog systems uses 380V as experiment Voltage, does not comprise the physical devices such as transformator, transformer, load in experimental system, although simulation experiment result is imitated than computer The most effective, but still bigger with practical situation gap.Mine mainly uses the supply voltage of 10kV and 3300V, and insulation life Length mainly the most relevant with voltage levels, the insulating properties of equipment especially cable are affected very greatly by the difference of electric pressure, directly Connect and cause the generation to leak current fault to produce bigger error with development law research.Inspection and test to protective relaying device, Need to consider the dynamic operation situation of system, transformator to be considered, the saturated characteristic of transformer, load change are to electrical equipment Combined influence, this cannot realize in 380V experimental system.
Due to the shortage of real mine dynamic simulator system, the inspection to mining equipment performance finally relies on down-hole Actual application, also can only be by emulation to the moving law of mine power supply system and the research of various fault genesis mechanism and understanding Software or low pressure experimental system are simulated, and therefore mine power supply equipment fault occurs frequently, and protection system acting can The highest by property, colliery Supply Security cannot just be can hardly be avoided by effective guarantee, and the rationale of explosive atmosphere power supply safety is ground Study carefully and be in weaker state all the time.
Summary of the invention
The technical problem to be solved is for above-mentioned deficiency of the prior art, it is provided that a kind of working voltage Completely the same with the practical situation of Coal Mining Power Distribution System, there is modeling ability flexible, dynamic, dynamic analog result true Property and practical Coal Mining Power Distribution System dynamic simulator system.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of Coal Mining Power Distribution System dynamic analog System, it is characterised in that: include high-voltage power supply circuit and the use exporting power supply after being 10kV voltage by 380V voltage transformation The low voltage feeder circuit of power supply, Yi Jiyong is exported after the 10kV voltage transformation exported by high-voltage power supply circuit is 3300V voltage In the magnetic powder brake of fictitious load and the fault simulation circuit that is connected with high-voltage power supply circuit or low voltage feeder circuit；Described height Pressure power supply circuits are connected with 380V civil power transmission line of electricity, and described low voltage feeder circuit includes for by 10kV voltage transformation being The reduction voltage circuit of 3300V voltage and the low voltage feeder branch road being connected with reduction voltage circuit, and prop up with reduction voltage circuit and low voltage feeder The harmonic source that road is all connected with, described magnetic powder brake is connected with low voltage feeder branch road；
Described high-voltage power supply circuit includes for booster transformer T1, high pressure that 380V voltage transformation is 10kV voltage being supplied Electric line and zero-sequence reactor ARC, described booster transformer T1 is three-phase two-simulation transformer, the one of described booster transformer T1 Secondary side winding is delta connection, and the secondary side winding of described booster transformer T1 is star connection, described booster transformer T1 First side winding be connected by threephase switch K1 and 380V civil power transmission line of electricity, one end of described zero-sequence reactor ARC is passed through Single-phase switch K2 is connected with the neutral point of the secondary side winding of booster transformer T1, and described high voltage supply circuit is supplied by A phase high pressure Electric line, B phase high voltage supply circuit and C phase high voltage supply circuit composition, the head end of described A phase high voltage supply circuit is terminals Sub-a and the first terminals with the secondary side winding of booster transformer T1 are connected, and the head end of described B phase high voltage supply circuit is for connecing Line terminals b and the second terminals with the secondary side winding of booster transformer T1 are connected, the head end of described C phase high voltage supply circuit The 3rd terminals for binding post c and with the secondary side winding of booster transformer T1 are connected；
Described reduction voltage circuit is made up of step-down transformer T2, and described step-down transformer T2 is three-phase two-simulation transformer, institute The first side winding stating step-down transformer T2 is delta connection, and the secondary side winding of described step-down transformer T2 is that star connects Method, the quantity of described low voltage feeder branch road is three articles and the respectively first low voltage feeder branch road, the second low voltage feeder branch road and Three low voltage feeder branch roads, three terminals of the first side winding of described step-down transformer T2 respectively with described A phase high voltage supply The end of the end of circuit, the end of described B phase high voltage supply circuit and described C phase high voltage supply circuit connects, and described A phase is high The end of the pressure end of supply line, the end of described B phase high voltage supply circuit and described C phase high voltage supply circuit respectively connects Line terminals d, binding post e and binding post f, described harmonic source by the threephase switch K7 that is sequentially connected in series and threephase switch K3 with Three terminals of the secondary side winding of described step-down transformer T2 connect, and described first low voltage feeder branch road passes through threephase switch K4 connects with the connecting line being connected threephase switch K7 and threephase switch K3, and described second low voltage feeder branch road passes through threephase switch K5 Be connected threephase switch K7 and threephase switch K3 connecting line connect, described 3rd low voltage feeder branch road by threephase switch K6 with The connecting line connecting threephase switch K7 and threephase switch K3 connects, and the three-phase input end of described first low voltage feeder branch road is respectively Binding post g, binding post h and binding post i, the three-phase input end of described second low voltage feeder branch road is respectively binding post J, binding post k and binding post l, the three-phase input end of described 3rd low voltage feeder branch road is respectively binding post m, terminals Sub-n and binding post o, three-phase output end respectively binding post p, the binding post q of described first low voltage feeder branch road and connect Line terminals r, the three-phase output end of described second low voltage feeder branch road is respectively binding post s, binding post t and binding post u, The three-phase output end of described 3rd low voltage feeder branch road is respectively binding post v, binding post w and binding post x；
Described fault simulation circuit includes gradually changeable leakage analog circuit and short circuit analog circuit, described gradually changeable electric leakage mould Intend circuit to be made up of single-phase switch K9 and slide rheostat R16, the sliding end ground connection of described slide rheostat R16, described slip One of rheostat R16 is fixing, and end is connected with one end of single-phase switch K9, and the other end of described single-phase switch K9 is gradually changeable leakage The outfan OUT1 of electrical analogue circuit；Described short circuit analog circuit is by slide rheostat R17, single-phase switch K10, single-phase switch K11, single-phase switch K12, single-phase switch K13 and single-phase switch K14 composition, of described slide rheostat R17 is fixing, and end is logical Cross single-phase switch K14 and one end of single-phase switch K10, one end of single-phase switch K11, one end of single-phase switch K12 and single-phase open The one end closing K13 connects, and the sliding end of described slide rheostat R17 and the equal ground connection of the other end of single-phase switch K13 are described single-phase The first outfan OUT2 that the other end is short circuit analog circuit of switch K10, the other end of described single-phase switch K11 is short circuit mould Intending the second outfan OUT3 of circuit, the other end of described single-phase switch K12 is the 3rd outfan OUT4 of short circuit analog circuit； The outfan OUT1 and binding post a～c of described gradually changeable leakage analog circuit or wherein any one, any two terminals Son, or with binding post d～f or wherein any one, any two binding post, or with binding post g～i or the most any One, any two binding post, or with binding post j～l or wherein any one, any two binding post, or with connect Line terminals m～o or wherein any one, any two binding post, with binding post p～r or wherein any one, arbitrarily Two binding posts, or with binding post s～u or wherein any one, any two binding post, or with binding post v～x Or wherein any one, any two binding post connect；First outfan OUT2 of described short circuit analog circuit, short circuit simulation Any one outfan in 3rd outfan OUT4 of the second outfan OUT3 of circuit and short circuit analog circuit and terminals Any one binding post in sub-a～x connects, or the first outfan OUT2 of described short circuit analog circuit, short circuit simulation Any two outfan in 3rd outfan OUT4 of the second outfan OUT3 of circuit and short circuit analog circuit and terminals Any two binding post in sub-a～c or with any two binding post in binding post d～f or with binding post g ～any two binding post in i or with any two binding post in binding post j～l or with binding post m～o In any two binding post or with any two binding post in binding post p～r or with in binding post s～u Any two binding post or be connected with any two binding post in binding post v～x, or described short circuit simulation First outfan OUT2 of circuit, the second outfan OUT3 of short circuit analog circuit and the 3rd outfan of short circuit analog circuit OUT4 respectively with binding post a～c or respectively with binding post d～f respectively with binding post g～i or respectively with wiring Terminal j～l or respectively with binding post m～o respectively with binding post p～r or respectively with binding post s～u or point It is not connected with binding post v～x.
Above-mentioned Coal Mining Power Distribution System dynamic simulator system, it is characterised in that: described single-phase switch K2 and boosting transformation Connect on the connection line of the secondary side winding of device T1 and have single-phase current transformer CT1, described high voltage supply circuit and liter buckling Connect on the connection line of the secondary side winding of depressor T1 and have voltage transformer pt 1；Described threephase switch K3 becomes with described blood pressure lowering Connect on the connection line of three terminals of the secondary side winding of depressor T2 and have voltage transformer pt 2, described threephase switch K4 Be connected threephase switch K7 and threephase switch K3 connecting line connect connection line on connect have zero sequence current mutual inductor CT2, Single-phase current transformer CT5, single-phase current transformer CT6 and single-phase current transformer CT7, described threephase switch K5 be connected three Connect on the connection line that the connecting line of switch K7 and threephase switch K3 connects mutually and have zero sequence current mutual inductor CT3, monophase current Transformer CT8, single-phase current transformer CT9 and single-phase current transformer CT10, described threephase switch K6 be connected threephase switch Connect on the connection line that the connecting line of K7 and threephase switch K3 connects and have zero sequence current mutual inductor CT4, single-phase current transformer CT11, single-phase current transformer CT12 and single-phase current transformer CT13.
Above-mentioned Coal Mining Power Distribution System dynamic simulator system, it is characterised in that: described A phase high voltage supply line routing resistance R1, electric capacity C1 and inductance L1 composition, one end of described inductance L1 is connected with one end of electric capacity C1 and is A phase high voltage supply circuit Head end, one end of described resistance R1 is connected and is the end of A phase high voltage supply circuit with one end of inductance L1, described electric capacity C1's The equal ground connection of the other end of the other end and resistance R1；Described B phase high voltage supply line routing resistance R2, electric capacity C2 and inductance L2 composition, One end of described inductance L2 is connected and is the head end of B phase high voltage supply circuit, one end of described resistance R2 with one end of electric capacity C2 It is connected with one end of inductance L2 and for the end of B phase high voltage supply circuit, another of the other end of described electric capacity C2 and resistance R2 Hold equal ground connection；Described C phase high voltage supply line routing resistance R3, electric capacity C3 and inductance L3 composition, one end of described inductance L3 and electricity Hold one end of C3 to connect and be the head end of C phase high voltage supply circuit, one end of described resistance R3 be connected with one end of inductance L3 and For the end of C phase high voltage supply circuit, the other end of described electric capacity C3 and the equal ground connection of the other end of resistance R3.
Above-mentioned Coal Mining Power Distribution System dynamic simulator system, it is characterised in that: described first low voltage feeder props up route One U phase low voltage feeder branch road, a V phase low voltage feeder branch road and W phase low voltage feeder branch road composition, a described U phase is low Voltage feed props up routing resistance R4, electric capacity C4 and inductance L4 composition, and one end of described inductance L4 is connected with one end of electric capacity C4 and is The head end of the oneth U phase low voltage feeder branch road, one end of described resistance R4 is connected with one end of inductance L4 and is a U phase low pressure feedback The end of electricity branch road, the other end of described electric capacity C4 and the equal ground connection of the other end of resistance R4, a described V phase low voltage feeder branch road Being made up of resistance R5, electric capacity C5 and inductance L5, one end of described inductance L5 is connected with one end of electric capacity C5 and is a V phase low pressure The head end of feed leg, one end of described resistance R5 is connected and is the end of a V phase low voltage feeder branch road with one end of inductance L5 End, the other end of described electric capacity C5 and the equal ground connection of the other end of resistance R5, a described W phase low voltage feeder prop up routing resistance R6, Electric capacity C6 and inductance L6 composition, one end of described inductance L6 is connected with one end of electric capacity C6 and is a W phase low voltage feeder branch road Head end, one end of described resistance R6 is connected and is the end of a W phase low voltage feeder branch road, described electricity with one end of inductance L6 Hold the other end and the equal ground connection of the other end of resistance R6 of C6；Described second low voltage feeder prop up route the 2nd U phase low voltage feeder branch road, 2nd V phase low voltage feeder branch road and the 2nd W phase low voltage feeder branch road composition, described 2nd U phase low voltage feeder prop up routing resistance R7, Electric capacity C7 and inductance L7 composition, one end of described inductance L7 is connected with one end of electric capacity C7 and is the 2nd U phase low voltage feeder branch road Head end, one end of described resistance R7 is connected and is the end of the 2nd U phase low voltage feeder branch road, described electricity with one end of inductance L7 Holding the other end and the equal ground connection of the other end of resistance R7 of C7, described 2nd V phase low voltage feeder props up routing resistance R8, electric capacity C8 and electricity Sense L8 composition, one end of described inductance L8 is connected and is the head end of the 2nd V phase low voltage feeder branch road with one end of electric capacity C8, described One end of resistance R8 is connected and is the end of the 2nd V phase low voltage feeder branch road with one end of inductance L8, another of described electric capacity C8 End and the equal ground connection of the other end of resistance R8, described 2nd W phase low voltage feeder props up routing resistance R9, electric capacity C9 and inductance L9 composition, One end of described inductance L9 is connected and is the head end of the 2nd W phase low voltage feeder branch road with one end of electric capacity C9, described resistance R9's One end is connected and is the end of the 2nd W phase low voltage feeder branch road, the other end of described electric capacity C9 and resistance with one end of inductance L9 The equal ground connection of the other end of R9；Described 3rd low voltage feeder props up route the 3rd U phase low voltage feeder branch road, the 3rd V phase low voltage feeder props up Road and the 3rd W phase low voltage feeder branch road composition, described 3rd U phase low voltage feeder props up routing resistance R10, electric capacity C10 and inductance L10 Composition, one end of described inductance L10 is connected and is the head end of the 3rd U phase low voltage feeder branch road, described electricity with one end of electric capacity C10 One end of resistance R10 is connected and is the end of the 3rd U phase low voltage feeder branch road with one end of inductance L10, another of described electric capacity C10 End and the equal ground connection of the other end of resistance R10, described 3rd V phase low voltage feeder props up routing resistance R11, electric capacity C11 and inductance L11 group Becoming, one end of described inductance L11 is connected and is the head end of the 3rd V phase low voltage feeder branch road, described resistance with one end of electric capacity C11 One end of R11 is connected and is the end of the 3rd V phase low voltage feeder branch road, the other end of described electric capacity C11 with one end of inductance L11 The equal ground connection with the other end of resistance R11, described 3rd W phase low voltage feeder props up routing resistance R12, electric capacity C12 and inductance L12 group Becoming, one end of described inductance L12 is connected and is the head end of the 3rd W phase low voltage feeder branch road, described resistance with one end of electric capacity C12 One end of R12 is connected and is the end of the 3rd W phase low voltage feeder branch road, the other end of described electric capacity C12 with one end of inductance L12 The equal ground connection with the other end of resistance R12.
Above-mentioned Coal Mining Power Distribution System dynamic simulator system, it is characterised in that: the maximum resistance of described slide rheostat R16 Value is 5000 Ω, and the maximum value of described slide rheostat R17 is 500 Ω.
Present invention also offers a kind of method step simple, operation realizes convenient and swift, it is possible to carry out colliery confession all sidedly Distribution system power supply safety dynamic analog, the verity of dynamic analog result and practical Coal Mining Power Distribution System dynamic analog Plan method, it is characterised in that the method includes the simulation of following five kinds of situations:
Situation one, Coal Mining Power Distribution System load dynamic analog, detailed process is:
Step 101, Guan Bi threephase switch K1, threephase switch K3 and threephase switch K7, open threephase switch K4, threephase switch K5 and threephase switch K6, dynamic analog Coal Mining Power Distribution System is in hot stand-by duty；
Step 102, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7, dynamic analog Coal Mining Power Distribution System is in no-load running state；
Step 103, regulate the output torque of magnetic powder brake from small to large, the start-up course of dynamic analog mining equipment；
Step 104, it is nominal torque by the output torque adjustment of magnetic powder brake, at dynamic analog Coal Mining Power Distribution System In full-load run state, and dynamic analog Coal Mining Power Distribution System is in normal operating condition；
Situation two, Coal Mining Power Distribution System method of operation dynamic analog, detailed process is:
Step 201, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；
Step 202, Guan Bi single-phase switch K2, zero-sequence reactor ARC access dynamic simulator system, and dynamic analog colliery is for joining Electricity system near transformator equipped with the method for operation of zero-sequence reactor, i.e. the neutral point compensation of ground method of operation；
Step 203, opening single-phase switch K2, zero-sequence reactor ARC exits dynamic simulator system, and dynamic analog colliery is for joining Electricity system near transformator without the method for operation of zero-sequence reactor, i.e. the neutral point insulation method of operation；
Situation three, Coal Mining Power Distribution System leak current fault dynamic analog, detailed process is:
Step 301, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 302, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post a～c Line terminals connects, slowly regulation slide rheostat R16, the single-phase earth leakage of dynamic analog high voltage supply circuit head end generation gradually changeable Fault；The outfan OUT1 of gradually changeable leakage analog circuit is connected with any two binding post in binding post a～c simultaneously Connect, slowly regulation slide rheostat R16, the asymmetric leak current fault of dynamic analog high voltage supply circuit head end generation gradually changeable； The outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with binding post a～c, slowly regulation slide rheostat R16, The symmetry leak current fault of dynamic analog high voltage supply circuit head end generation gradually changeable；
Step 303, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post d～f Line terminals connects, slowly regulation slide rheostat R16, the single-phase earth leakage of dynamic analog high voltage supply line end generation gradually changeable Fault；The outfan OUT1 of gradually changeable leakage analog circuit is connected with any two binding post in binding post d～f simultaneously Connect, slowly regulation slide rheostat R16, the asymmetric leak current fault of dynamic analog high voltage supply line end generation gradually changeable； The outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with binding post d～f, slowly regulation slide rheostat R16, The symmetry leak current fault of dynamic analog high voltage supply line end generation gradually changeable；
Step 304, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post g～o Line terminals connects, slowly regulation slide rheostat R16, dynamic analog difference low voltage feeder branch road head end generation gradually changeable single-phase Leak current fault；By any two binding post in the outfan OUT1 and binding post g～i of gradually changeable leakage analog circuit, Or with any two binding post in binding post j～l or with any two binding post in binding post m～o simultaneously Connecting, slowly regulation slide rheostat R16, there is same circuit gradually changeable not in dynamic analog difference low voltage feeder branch road head end Symmetrical leak current fault；By any one terminals in the outfan OUT1 and binding post g～i of gradually changeable leakage analog circuit Any one binding post in son and binding post j～l is simultaneously connected with, or the outfan by gradually changeable leakage analog circuit Any one binding post in OUT1 and binding post g～i and any one binding post in binding post m～o are simultaneously Connect, or by any one binding post in the outfan OUT1 and binding post j～l of gradually changeable leakage analog circuit and Any one binding post in binding post m～o is simultaneously connected with, slowly regulation slide rheostat R16, and dynamic analog difference is low There is the asymmetric leak current fault of different circuit gradually changeable in voltage feed branch road head end；Outfan by gradually changeable leakage analog circuit OUT1 and binding post g～i are simultaneously connected with or are simultaneously connected with binding post j～l or with binding post m～o simultaneously Connect, the symmetrical leak current fault of dynamic analog difference low voltage feeder branch road head end generation gradually changeable；
Step 305, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post p～x Line terminals connects, slowly regulation slide rheostat R16, dynamic analog difference low voltage feeder branch road end generation gradually changeable single-phase Leak current fault；By any two in the outfan OUT1 and binding post p～r of gradually changeable leakage analog circuit, binding post s ～any two in u or any two in binding post v～x are simultaneously connected with, slowly regulation slide rheostat R16, dynamically There is the asymmetric leak current fault of same circuit gradually changeable in the different low voltage feeder branch road end of simulation；By gradually changeable leakage analog electricity The outfan OUT1 on road is simultaneously connected with any one in any one in binding post p～r and binding post s～u, or Person is by any one in the outfan OUT1 and binding post p～r of gradually changeable leakage analog circuit and binding post v～x Any one be simultaneously connected with, or by any with binding post s～u of the outfan OUT1 of gradually changeable leakage analog circuit Any one in one and binding post v～x is simultaneously connected with, slowly regulation slide rheostat R16, dynamic analog difference low pressure There is the asymmetric leak current fault of different circuit gradually changeable in feed leg end；Outfan by gradually changeable leakage analog circuit OUT1 is simultaneously connected with binding post p～r or is simultaneously connected with, dynamically with binding post s～u or with binding post v～x The symmetrical leak current fault of the different low voltage feeder branch road end generation gradually changeable of simulation；
Situation four, Coal Mining Power Distribution System singlephase earth fault dynamic analog, detailed process is:
Step 401, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 402, by described short circuit analog circuit the first outfan OUT2 and binding post a～c in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, dynamic analog high voltage supply line Road head end generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slowly Regulation slide rheostat R17, there is the single-phase ground connection event through different resistance transition resistances in dynamic analog high voltage supply circuit head end Barrier；Or by any one binding post in the second outfan OUT3 and binding post a～c of described short circuit analog circuit even Connecing, close single-phase switch K11 and single-phase switch K13, open single-phase switch K14, dynamic analog high voltage supply circuit head end occurs Single-phase it is directly grounded fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, and slowly regulation is slided and become Resistance device R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog high voltage supply circuit head end；Or by institute The 3rd outfan OUT4 stating short circuit analog circuit is connected with any one binding post in binding post a～c, closes single-phase Switch K12 and single-phase switch K13, opens single-phase switch K14, and dynamic analog high voltage supply circuit head end occurs single-phase being directly grounded Fault；Guan Bi single-phase switch K12 and single-phase switch K14, opens single-phase switch K13, slowly regulation slide rheostat R17, dynamically There is the single-phase earth fault through different resistance transition resistances in simulated high-pressure supply line head end；
Step 403, by described short circuit analog circuit the first outfan OUT2 and binding post d～f in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, dynamic analog high voltage supply line Road end generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slowly Regulation slide rheostat R17, there is the single-phase ground connection event through different resistance transition resistances in dynamic analog high voltage supply line end Barrier；Or by any one binding post in the second outfan OUT3 and binding post d～f of described short circuit analog circuit even Connecing, close single-phase switch K11 and single-phase switch K13, open single-phase switch K14, dynamic analog high voltage supply line end occurs Single-phase it is directly grounded fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, and slowly regulation is slided and become Resistance device R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog high voltage supply line end；Or by institute The 3rd outfan OUT4 stating short circuit analog circuit is connected with any one binding post in binding post d～f, closes single-phase Switch K12 and single-phase switch K13, the generation of dynamic analog high voltage supply line end is single-phase is directly grounded fault；Close single-phase opening Close K12 and single-phase switch K14, open single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog high voltage supply circuit There is the single-phase earth fault through different resistance transition resistances in end；
Step 404, by described short circuit analog circuit the first outfan OUT2 and binding post g～o in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, and dynamic analog low voltage feeder props up Road head end generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slowly Regulation slide rheostat R17, there is the single-phase ground connection event through different resistance transition resistances in dynamic analog low voltage feeder branch road head end Barrier；Or by any one binding post in the second outfan OUT3 and binding post g～o of described short circuit analog circuit even Connecing, close single-phase switch K11 and single-phase switch K13, open single-phase switch K14, dynamic analog low voltage feeder branch road head end occurs Single-phase it is directly grounded fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, and slowly regulation is slided and become Resistance device R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog low voltage feeder branch road head end；Or by institute The 3rd outfan OUT4 stating short circuit analog circuit is connected with any one binding post in binding post g～o, closes single-phase Switch K12 and single-phase switch K13, opens single-phase switch K14, and dynamic analog low voltage feeder branch road head end occurs single-phase being directly grounded Fault；Guan Bi single-phase switch K12 and single-phase switch K14, opens single-phase switch K13, slowly regulation slide rheostat R17, dynamically There is the single-phase earth fault through different resistance transition resistances in simulation low voltage feeder branch road head end；
Step 405, by described short circuit analog circuit the first outfan OUT2 and binding post p～x in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, and dynamic analog low voltage feeder props up Road end generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slowly Regulation slide rheostat R17, there is the single-phase ground connection event through different resistance transition resistances in dynamic analog low voltage feeder branch road end Barrier；Or by any one binding post in the second outfan OUT3 and binding post p～x of described short circuit analog circuit even Connecing, close single-phase switch K11 and single-phase switch K13, open single-phase switch K14, dynamic analog low voltage feeder branch road end occurs Single-phase it is directly grounded fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, and slowly regulation is slided and become Resistance device R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog low voltage feeder branch road end；Or by institute The 3rd outfan OUT4 stating short circuit analog circuit is connected with any one binding post in binding post p～x, closes single-phase Switch K12 and single-phase switch K13, opens single-phase switch K14, and dynamic analog low voltage feeder branch road end occurs single-phase being directly grounded Fault；Guan Bi single-phase switch K12 and single-phase switch K14, opens single-phase switch K13, slowly regulation slide rheostat R17, dynamically There is the single-phase earth fault through different resistance transition resistances in simulation low voltage feeder branch road end；
Situation five, Coal Mining Power Distribution System short trouble dynamic analog, detailed process is:
Step 501, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 502, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post a～c Individual binding post connects respectively, closes outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connects Two of line terminals connection, open single-phase switch K13 and single-phase switch K14, and dynamic analog high voltage supply circuit head end occurs not Symmetrical direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog high voltage supply circuit head end occurs Asymmetric ground short circuit fault；Close outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connect Two of line terminals connection, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulation slide rheostat R17, dynamically There is the asymmetric ground short circuit fault through different resistance transition resistances in simulated high-pressure supply line head end；
Step 503, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post d～f Individual binding post connects respectively, closes outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connects Two of line terminals connection, open single-phase switch K13 and single-phase switch K14, and dynamic analog high voltage supply line end occurs not Symmetrical direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog high voltage supply line end occurs Asymmetric ground short circuit fault；Close outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connect Two of line terminals connection, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulation slide rheostat R17, dynamically There is the asymmetric ground short circuit fault through different resistance transition resistances in simulated high-pressure supply line end；
Step 504, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post g～i Individual binding post or with any two binding post in binding post j～l or with any two in binding post m～o Binding post connects respectively, outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, open single-phase switch K13 and single-phase switch K14, and it is the most right that dynamic analog low voltage feeder branch road head end occurs Claim direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and terminals Two of son connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog low voltage feeder branch road head end occurs not Balanced to ground short trouble；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog Intend low voltage feeder branch road head end and the asymmetric ground short circuit fault through different resistance transition resistances occurs；
Step 505, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post p～r Individual binding post or with any two binding post in binding post s～u or with any two in binding post v～x Binding post connects respectively, outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, open single-phase switch K13 and single-phase switch K14, and it is the most right that dynamic analog low voltage feeder branch road end occurs Claim direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and terminals Two of son connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog low voltage feeder branch road end occurs not Balanced to ground short trouble；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog Intend low voltage feeder branch road end and the asymmetric ground short circuit fault through different resistance transition resistances occurs；
Step 506, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit 3rd outfan OUT4 of OUT3 and short circuit analog circuit is connected with binding post a～c respectively, closes single-phase switch K10, single-phase Switch K11, single-phase switch K12 and single-phase switch K13, opens single-phase switch K14, and dynamic analog high voltage supply circuit head end occurs Symmetric metal short trouble；Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open Single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog high voltage supply circuit head end occurs through different resistance transition The symmetry short trouble of resistance；
Step 507, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit 3rd outfan OUT4 of OUT3 and short circuit analog circuit is connected with binding post d～f respectively, closes single-phase switch K10, single-phase Switch K11, single-phase switch K12 and single-phase switch K13, opens single-phase switch K14, and dynamic analog high voltage supply line end occurs Symmetric metal short trouble；Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open Single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog high voltage supply line end occurs through different resistance transition The symmetry short trouble of resistance；
Step 508, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit OUT3 and short circuit analog circuit the 3rd outfan OUT4 respectively with binding post g～i or respectively with binding post j～l or It is connected with binding post m～o respectively, Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K13, Open single-phase switch K14, dynamic analog low voltage feeder branch road head end generation symmetric metal short trouble；Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open single-phase switch K13, slowly regulate slide rheostat R17, there is the symmetry short trouble through different resistance transition resistances in dynamic analog low voltage feeder branch road head end；
Step 509, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit OUT3 and short circuit analog circuit the 3rd outfan OUT4 respectively with binding post p～r or respectively with binding post s～u or It is connected with binding post v～x respectively, Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K13, Open single-phase switch K14, dynamic analog low voltage feeder branch road end generation symmetric metal short trouble；Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open single-phase switch K13, slowly regulate slide rheostat R17, there is the symmetry short trouble through different resistance transition resistances in dynamic analog low voltage feeder branch road end.
Above-mentioned method, it is characterised in that the method also includes the simulation of following three kinds of situations:
Situation six, Coal Mining Power Distribution System earth leakage protective performance dynamic analog, detailed process is:
Step 601, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 602, by the secondary side winding of zero sequence current mutual inductor CT2, the secondary side winding of zero sequence current mutual inductor CT3 With the secondary side winding of zero sequence current mutual inductor CT4, and the secondary side winding of voltage transformer pt 2 is all connected to ore deposit to be tested Use comprehensive protection device；
Step 603, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post g～i Line terminals connects, slowly regulation slide rheostat R16, dynamic analog the first low voltage feeder branch road head end generation gradually changeable single-phase Leak current fault；Or the outfan OUT1 of gradually changeable leakage analog circuit is connected with any two in binding post g～i simultaneously Connecing, slowly regulation slide rheostat R16, there is the most right of same circuit gradually changeable in dynamic analog the first low voltage feeder branch road head end Steelyard slepsydra electric fault；Or the outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with binding post g～i, dynamic analog Intend the symmetrical leak current fault of different low voltage feeder branch road head end generation gradually changeable；
Step 604, check the action situation of switch and judge the earth leakage protective selectivity of mining comprehensive protector to be tested Can: when threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining The earth leakage protective horizontal selection of comprehensive protection device is functional；When threephase switch K4 does not change closure state, threephase switch K5 or When threephase switch K6 opens, it is judged that bad for the earth leakage protective horizontal selection performance of mining comprehensive protector to be tested；Work as three-phase Switch K4 does not change closure state, when threephase switch K3 opens, it is judged that earth leakage protective vertical for mining comprehensive protector to be tested To selecting, performance is bad；
Step 605, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post p～r Line terminals connects, the resistance of regulation slide rheostat R16 to maximum, and dynamic analog the first low voltage feeder branch road end occurs single Phase leak current fault；Or by any two in the outfan OUT1 and binding post p～r of gradually changeable leakage analog circuit simultaneously Connecting, the resistance of regulation slide rheostat R16 to maximum, there is same circuit in dynamic analog the first low voltage feeder branch road end Asymmetric leak current fault；
Step 606, check the action situation of switch and judge the earth leakage protective susceptiveness of mining comprehensive protector to be tested Can: when threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining Comprehensive protection device is earth leakage protective sensitive functional；When threephase switch K4, threephase switch K5 and threephase switch K6 do not change During closure state, it is judged that bad for the earth leakage protective sensitive performance of mining comprehensive protector to be tested；
Situation seven, Coal Mining Power Distribution System short-circuit protection performance dynamic analog, detailed process is:
Step 701, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 702, by the secondary side winding of single-phase current transformer CT5, single-phase current transformer CT6 secondary side around Group, the secondary side winding of single-phase current transformer CT7, the secondary side winding of single-phase current transformer CT8, single-phase current transformer The secondary side winding of CT9, the secondary side winding of single-phase current transformer CT10, single-phase current transformer CT11 secondary side around Group, the secondary side winding of single-phase current transformer CT12 and the secondary side winding of single-phase current transformer CT13, and voltage is mutual The secondary side winding of sensor PT2 is all connected to mining comprehensive protector to be tested；
Step 703, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post p～r Individual binding post connects respectively, closes outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connects Two of line terminals connection, open single-phase switch K13 and single-phase switch K14, and dynamic analog the first low voltage feeder branch road end is sent out Raw asymmetric direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 with Two of binding post connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, dynamic analog the first low voltage feeder branch road There is asymmetric ground short circuit fault in end；In Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12, correspondence is defeated Going out and hold two be connected with binding post, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulates slide rheostat R17, there is the asymmetric ground short circuit fault through different resistance transition resistances in dynamic analog the first low voltage feeder branch road end；
Step 704, check the action situation of switch and judge the selection of short-circuit protection of mining comprehensive protector to be tested Performance and sensitive performance: when threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that Laterally selection for mining comprehensive protector short-circuit protection to be tested is functional；When threephase switch K4 does not change closure state, When threephase switch K5 or threephase switch K6 opens, it is judged that laterally select performance for mining comprehensive protector short-circuit protection to be tested Bad；When threephase switch K4 does not change closure state, and threephase switch K3 opens, it is judged that short for mining comprehensive protector to be tested The longitudinal direction of road protection selects performance bad；When threephase switch K4, threephase switch K5 and threephase switch K6 the most do not change closure state Time, it is judged that the sensitive performance for mining comprehensive protector short-circuit protection to be tested is bad；
Step 705, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit 3rd outfan OUT4 of OUT3 and short circuit analog circuit is connected with binding post g～i respectively, closes single-phase switch K10, single-phase Switch K11, single-phase switch K12 and single-phase switch K13, opens single-phase switch K14, dynamic analog the first low voltage feeder branch road head end There is symmetric metal short trouble；
Step 706, check the action situation of switch and judge the short-circuit protection reliability of mining comprehensive protector to be tested Can: when threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining The unfailing performance of comprehensive protection device short-circuit protection is good；When threephase switch K4 does not change closure state, threephase switch K5 or three-phase When switch K6 opens, or when threephase switch K4, threephase switch K5 and threephase switch K6 do not change closure state, it is judged that for treating The unfailing performance of test mining comprehensive protector short-circuit protection is bad；
Situation eight, Coal Mining Power Distribution System one-phase ground protection dynamic analog, detailed process is:
Step 801, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 802, by the secondary side winding of zero sequence current mutual inductor CT2, the secondary side winding of zero sequence current mutual inductor CT3 With the secondary side winding of zero sequence current mutual inductor CT4, and the secondary side winding of voltage transformer pt 2 is all connected to ore deposit to be tested Use comprehensive protection device；
Step 803, by described short circuit analog circuit the first outfan OUT2 and binding post g～i in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, and dynamic analog the first low voltage feeder branch road head end occurs single It is directly grounded fault mutually, closes single-phase switch K10 and single-phase switch K14, open single-phase switch K13, slowly regulation slip variable resistance Device R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog the first low voltage feeder branch road head end；Or will Second outfan OUT3 of described short circuit analog circuit is connected with any one binding post in binding post g～i, and Guan Bi is single Switch K11 and single-phase switch K13 mutually, there is the single-phase fault that is directly grounded, Guan Bi in dynamic analog the first low voltage feeder branch road head end Single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, slowly regulation slide rheostat R17, and dynamic analog first is low There is the single-phase earth fault through different resistance transition resistances in voltage feed branch road head end；Or the by described short circuit analog circuit Three outfan OUT4 are connected with any one binding post in binding post g～i, Guan Bi single-phase switch K12 and single-phase switch K13, there is the single-phase fault that is directly grounded in dynamic analog the first low voltage feeder branch road head end, Guan Bi single-phase switch K12 and single-phase open Closing K14, open single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog the first low voltage feeder branch road head end occurs The single-phase earth fault through different resistance transition resistances；
Step 804, check the action situation of switch and judge the one-phase ground protection of mining comprehensive protector to be tested Can: when threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining Laterally selecting of comprehensive protection device one-phase ground protection is functional；When threephase switch K4 does not change closure state, threephase switch When K5 or threephase switch K6 opens, it is judged that horizontal for mining comprehensive protector one-phase ground protection to be tested selects performance not Good；When threephase switch K4 does not change closure state, and threephase switch K3 opens, it is judged that single-phase for mining comprehensive protector to be tested The longitudinal direction of ground protection selects performance bad.
Above-mentioned method, it is characterised in that: the maximum value of described slide rheostat R16 is 5000 Ω, change in resistance model Enclose is 1000 Ω～5000 Ω；The maximum value of described slide rheostat R17 is 500 Ω.
The present invention compared with prior art has the advantage that
1, present invention employs the power supply voltage level identical with Coal Mining Power Distribution System and main electrical scheme, it is contemplated that actual change Depressor, line parameter circuit value, transformer, the load change dynamic effect to system, it is possible to the coal that true reappearance is actual to greatest extent Ore deposit power supply-distribution system, using the teaching of the invention it is possible to provide abundant reflection system operating characteristics, the data of faulty intrinsic, dynamic analog result true Property and practical.
2, the structure of Coal Mining Power Distribution System dynamic simulator system of the present invention is flexible, novel in design, can be according to research, test Different demands, by the different running method changing flexibly simulation Coal Mining Power Distribution System of on off state, become by slip The continuous change of resistance device resistance, the generating process of dynamic analog gradually changeable leak current fault；By multiple switch combinations and state Change, can the various single failures of dynamic analog Coal Mining Power Distribution System and associativity fault.
3, Coal Mining Power Distribution System dynamic simulator system of the present invention is provided with total power main and multiple-limb low voltage feeder Circuit, is provided with power supply main switch and branch switch, and different branched low pressure feeder line parameters arrange different values, it is possible to dynamically The feeder line of simulation different length, it is possible to longitudinally select performance, horizontal selectivity to mining comprehensive protector is earth leakage protective Can and sensitive performance, the longitudinal direction of mining comprehensive protector short-circuit protection is selected performance, laterally selects performance, sensitive performance and can By performance, and the longitudinal direction of mining comprehensive protector one-phase ground protection is selected performance and laterally selects performance to carry out various bar Dynamic analog under part and test.
4, the present invention can simulate in Coal Mining Power Distribution System owing to electric locomotive, frequency control equipment, pulling equipment are to confession The quality of power supply of electricity system is polluted, for carrying out the Coal Mining Power Distribution System dynamic analog under severe power supply quality pollutional condition Intend, it is possible to for studying the harmonic wave control technology of mine.
5, present system builds flexibly, it is possible to for the complete detection to mineral electrical apparatus performance, using the teaching of the invention it is possible to provide rich Rich fault data, is the good test platform of research Supply Security, be basis develop mining new technology of relay protection with Foundation.
6, the method step of Coal Mining Power Distribution System Dynamic Simulation Method of the present invention is simple, and operation realizes convenient and swift, and Coal Mining Power Distribution System power supply safety dynamic analog can be carried out all sidedly.
In sum, the working voltage of the present invention is completely the same with the practical situation of Coal Mining Power Distribution System, have flexibly, Dynamic modeling ability, the verity of dynamic analog result and practical, using effect is good, it is simple to promote the use of.
Below by drawings and Examples, technical scheme is described in further detail.
Accompanying drawing explanation
Fig. 1 is the schematic block circuit diagram of Coal Mining Power Distribution System dynamic simulator system of the present invention.
Fig. 2 is the circuit theory diagrams of gradually changeable leakage analog circuit of the present invention.
Fig. 3 is the circuit theory diagrams of short circuit analog circuit of the present invention.
Fig. 4 is that the circuit of 380V civil power transmission line of electricity of the present invention, high-voltage power supply circuit and low voltage feeder circuit connects signal Figure.
Description of reference numerals:
1 high-voltage power supply circuit；2 low voltage feeder circuit；2-1 reduction voltage circuit；
2-2 low voltage feeder branch road；2-3 harmonic source；3 magnetic powder brakes；
4 fault simulation circuit；5 380V civil power transmission lines of electricity.
Detailed description of the invention
As it is shown in figure 1, the Coal Mining Power Distribution System dynamic simulator system of the present invention, including for by 380V voltage transformation being Export the high-voltage power supply circuit 1 of power supply after 10kV voltage and the 10kV voltage transformation for being exported by high-voltage power supply circuit 1 is Export the low voltage feeder circuit 2 of power supply after 3300V voltage, and be used for magnetic powder brake 3 and and the high voltage supply of fictitious load The fault simulation circuit 4 that circuit 1 or low voltage feeder circuit 2 connect；Described high-voltage power supply circuit 1 and 380V civil power transmission line of electricity 5 Connecting, described low voltage feeder circuit 2 includes for by reduction voltage circuit 2-1 that 10kV voltage transformation is 3300V voltage and and blood pressure lowering The low voltage feeder branch road 2-2 that circuit 2-1 connects, and the harmonic source being all connected with reduction voltage circuit 2-1 and low voltage feeder branch road 2-2 2-3, described magnetic powder brake 3 is connected with low voltage feeder branch road 2-2；
As shown in Figure 4, described high-voltage power supply circuit 1 includes for by boosting transformation that 380V voltage transformation is 10kV voltage Device T1, high voltage supply circuit and zero-sequence reactor ARC, described booster transformer T1 is three-phase two-simulation transformer, described boosting The first side winding of transformator T1 is delta connection, and the secondary side winding of described booster transformer T1 is star connection, described The first side winding of booster transformer T1 is connected by threephase switch K1 and 380V civil power transmission line of electricity 5, described zero-sequence reactor One end of ARC is connected with the neutral point of the secondary side winding of booster transformer T1 by single-phase switch K2, described high voltage supply line Route A phase high voltage supply circuit, B phase high voltage supply circuit and C phase high voltage supply circuit composition, described A phase high voltage supply circuit Head end be binding post a and the first terminals with the secondary side winding of booster transformer T1 are connected, described B phase high voltage supply The head end of circuit is binding post b and the second terminals with the secondary side winding of booster transformer T1 are connected, described C phase high pressure The head end of supply line is binding post c and the 3rd terminals with the secondary side winding of booster transformer T1 are connected；Rise buckling The secondary side winding of depressor T1 uses star connection, it is not necessary to add a ground connection transformation as real Coal Mining Power Distribution System again Device, it becomes possible to the neutral point in the secondary side winding of booster transformer T1 connects zero-sequence reactor ARC, simulates neutral point and compensates The ground connection method of operation and the neutral point insulation method of operation；And the first side winding of booster transformer T1 uses delta connection, Interrupted triple harmonic current loop, it is to avoid the triple harmonic current on 380V civil power transmission line of electricity 5 to whole colliery for joining The impact of electricity system；
As shown in Figure 4, described reduction voltage circuit 2-1 is made up of step-down transformer T2, and described step-down transformer T2 is that three-phase is double Winding transformer, the first side winding of described step-down transformer T2 is delta connection, the secondary side of described step-down transformer T2 Winding is star connection, and the quantity of described low voltage feeder branch road 2-2 is three and the respectively first low voltage feeder branch road, second low Voltage feed branch road and the 3rd low voltage feeder branch road, three terminals of the first side winding of described step-down transformer T2 respectively with institute State the end of A phase high voltage supply circuit, the end of described B phase high voltage supply circuit and the end of described C phase high voltage supply circuit Connect, the end of described A phase high voltage supply circuit, the end of described B phase high voltage supply circuit and described C phase high voltage supply circuit End be respectively binding post d, binding post e and binding post f, described harmonic source 2-3 is opened by the three-phase that is sequentially connected in series Three terminals of the secondary side winding closing K7 and threephase switch K3 and described step-down transformer T2 are connected, described first low pressure feedback Electricity branch road is connected with the connecting line being connected threephase switch K7 and threephase switch K3 by threephase switch K4, described second low voltage feeder Branch road is connected with the connecting line being connected threephase switch K7 and threephase switch K3 by threephase switch K5, and described 3rd low voltage feeder props up Road is connected with the connecting line being connected threephase switch K7 and threephase switch K3 by threephase switch K6, described first low voltage feeder branch road Three-phase input end be respectively binding post g, binding post h and binding post i, the three-phase of described second low voltage feeder branch road is defeated Entering end and be respectively binding post j, binding post k and binding post l, the three-phase input end of described 3rd low voltage feeder branch road is respectively For binding post m, binding post n and binding post o, the three-phase output end of described first low voltage feeder branch road is respectively terminals Sub-p, binding post q and binding post r, the three-phase output end of described second low voltage feeder branch road is respectively binding post s, wiring Terminal t and binding post u, the three-phase output end of described 3rd low voltage feeder branch road be respectively binding post v, binding post w and Binding post x；The secondary side winding of step-down transformer T2 uses delta connection, has interrupted triple harmonic current loop, it is to avoid The impact on high voltage supply circuit of the triple harmonic current on low voltage feeder branch road 2-2；
Described fault simulation circuit 4 includes gradually changeable leakage analog circuit and short circuit analog circuit, as in figure 2 it is shown, described Gradually changeable leakage analog circuit is made up of single-phase switch K9 and slide rheostat R16, the slip termination of described slide rheostat R16 Ground, of described slide rheostat R16 is fixing, and end is connected with one end of single-phase switch K9, the other end of described single-phase switch K9 Outfan OUT1 for gradually changeable leakage analog circuit；As it is shown on figure 3, described short circuit analog circuit is by slide rheostat R17, list Switch K10, single-phase switch K11, single-phase switch K12, single-phase switch K13 and single-phase switch K14 composition, described slide rheostat mutually The fixing end of of R17 is by single-phase switch K14 and one end of single-phase switch K10, one end of single-phase switch K11, single-phase switch One end of one end of K12 and single-phase switch K13 connects, another of the sliding end of described slide rheostat R17 and single-phase switch K13 The the first outfan OUT2 holding equal ground connection, the other end of described single-phase switch K10 to be short circuit analog circuit, described single-phase switch The other end of K11 is the second outfan OUT3 of short circuit analog circuit, and the other end of described single-phase switch K12 is short circuit simulation electricity The 3rd outfan OUT4 on road；The outfan OUT1 and binding post a～c or the most any of described gradually changeable leakage analog circuit One, any two binding post, or with binding post d～f or wherein any one, any two binding post, or with connect Line terminals g～i or wherein any one, any two binding post, with binding post j～l or wherein any one, arbitrarily Two binding posts, or with binding post m～o or wherein any one, any two binding post, or with binding post p～r Or wherein any one, any two binding post, with binding post s～u or wherein any one, any two terminals Son, or with binding post v～x or wherein any one, any two binding post is connected；The first of described short circuit analog circuit Outfan OUT2, short circuit analog circuit the second outfan OUT3 and short circuit analog circuit the 3rd outfan OUT4 in any One outfan is connected with any one binding post in binding post a～x, or described short circuit analog circuit is first defeated Go out to hold any two in the 3rd outfan OUT4 of OUT2, the second outfan OUT3 of short circuit analog circuit and short circuit analog circuit Any two binding post in individual outfan and binding post a～c or with any two terminals in binding post d～f Son or with any two binding post in binding post g～i or with any two binding post in binding post j～l, With any two binding post in binding post m～o or with any two binding post in binding post p～r or It is connected with any two binding post in binding post s～u or with any two binding post in binding post v～x, Or the first outfan OUT2 of described short circuit analog circuit, the second outfan OUT3 of short circuit analog circuit and short circuit simulation electricity The 3rd outfan OUT4 on road respectively with binding post a～c or respectively with binding post d～f or respectively with binding post g～ I or respectively with binding post j～l respectively with binding post m～o or respectively with binding post p～r or respectively with wiring Terminal s～u or be connected with binding post v～x respectively.When being embodied as, another fixing end of described slide rheostat R16 The most unsettled with another fixing end of slide rheostat R17.
As shown in Figure 4, in the present embodiment, the connecting line of the secondary side winding of described single-phase switch K2 and booster transformer T1 Connect on road and have single-phase current transformer CT1, the connection of the secondary side winding of described high voltage supply circuit and booster transformer T1 Connect on circuit and have voltage transformer pt 1；Three of the secondary side winding of described threephase switch K3 and described step-down transformer T2 Connect on the connection line of terminals and have a voltage transformer pt 2, described threephase switch K4 be connected threephase switch K7 and three-phase is opened Connect on the connection line of the connecting line connection closing K3 and have zero sequence current mutual inductor CT2, single-phase current transformer CT5, single-phase electricity Current transformer CT6 and single-phase current transformer CT7, described threephase switch K5 be connected threephase switch K7 and the company of threephase switch K3 Connect on the connection line that wiring connects and have zero sequence current mutual inductor CT3, single-phase current transformer CT8, single-phase current transformer CT9 and single-phase current transformer CT10, described threephase switch K6 are with the connecting line being connected threephase switch K7 and threephase switch K3 even On the connection line connect connect have zero sequence current mutual inductor CT4, single-phase current transformer CT11, single-phase current transformer CT12 and Single-phase current transformer CT13.Wherein, single-phase current transformer CT1 is used for detecting zero-sequence reactor ARC and accesses dynamic analog system The zero-sequence current size of system post-compensation, zero sequence current mutual inductor CT2 is for detecting the zero sequence electricity of low pressure the first low voltage feeder branch road Stream size, zero sequence current mutual inductor CT3 is for detecting the zero-sequence current size of low pressure the second low voltage feeder branch road, and zero-sequence current is mutual Sensor CT4 is for detecting the zero-sequence current size of low pressure the 3rd low voltage feeder branch road, and single-phase current transformer CT5 is used for detecting low Pressing the size of current of the first low voltage feeder branch road U phase, single-phase current transformer CT6 is used for detecting low pressure the first low voltage feeder branch road The size of current of V phase, single-phase current transformer CT7 is for detecting the size of current of low pressure the second low voltage feeder branch road W phase, single-phase Current Transmit 8 is for detecting the size of current of low pressure the second low voltage feeder branch road U phase, and single-phase current transformer CT9 is used for The size of current of detection low pressure the second low voltage feeder branch road V phase, single-phase current transformer CT10 is used for detecting low pressure the second low pressure The size of current of feed leg W phase, single-phase current transformer CT11 is for detecting the electric current of low pressure the 3rd low voltage feeder branch road U phase Size, single-phase current transformer CT12 is for detecting the size of current of low pressure the 3rd low voltage feeder branch road V phase, monophase current mutual inductance Device CT13 is for detecting the size of current of low pressure the 3rd low voltage feeder branch road W phase；Voltage transformer pt 1 is used for providing colliery for joining The high pressure 10kV voltage signal of electricity System Dynamic Model system, voltage transformer pt 2 is used for providing Coal Mining Power Distribution System dynamic The low pressure 3300V voltage signal of analog systems；
As shown in Figure 4, in the present embodiment, described A phase high voltage supply line routing resistance R1, electric capacity C1 and inductance L1 composition, One end of described inductance L1 is connected and is the head end of A phase high voltage supply circuit, one end of described resistance R1 with one end of electric capacity C1 It is connected with one end of inductance L1 and for the end of A phase high voltage supply circuit, another of the other end of described electric capacity C1 and resistance R1 Hold equal ground connection；Described B phase high voltage supply line routing resistance R2, electric capacity C2 and inductance L2 composition, one end of described inductance L2 and electricity Hold one end of C2 to connect and be the head end of B phase high voltage supply circuit, one end of described resistance R2 be connected with one end of inductance L2 and For the end of B phase high voltage supply circuit, the other end of described electric capacity C2 and the equal ground connection of the other end of resistance R2；Described C phase high pressure Supply lines routing resistance R3, electric capacity C3 and inductance L3 composition, one end of described inductance L3 is connected with one end of electric capacity C3 and is C phase The head end of high voltage supply circuit, one end of described resistance R3 is connected and is the end of C phase high voltage supply circuit with one end of inductance L3 End, the other end of described electric capacity C3 and the equal ground connection of the other end of resistance R3.
As shown in Figure 4, in the present embodiment, described first low voltage feeder prop up route the oneth U phase low voltage feeder branch road 2-2, the One V phase low voltage feeder branch road 2-2 and a W phase low voltage feeder branch road 2-2 composition, a described U phase low voltage feeder branch road 2-2 by Resistance R4, electric capacity C4 and inductance L4 composition, one end of described inductance L4 is connected with one end of electric capacity C4 and is a U phase low pressure feedback The head end of electricity branch road 2-2, one end of described resistance R4 is connected with one end of inductance L4 and is a U phase low voltage feeder branch road 2-2 End, the other end of described electric capacity C4 and the equal ground connection of the other end of resistance R4, a described V phase low voltage feeder branch road 2-2 by Resistance R5, electric capacity C5 and inductance L5 composition, one end of described inductance L5 is connected with one end of electric capacity C5 and is a V phase low pressure feedback The head end of electricity branch road 2-2, one end of described resistance R5 is connected with one end of inductance L5 and is a V phase low voltage feeder branch road 2-2 End, the other end of described electric capacity C5 and the equal ground connection of the other end of resistance R5, a described W phase low voltage feeder branch road 2-2 by Resistance R6, electric capacity C6 and inductance L6 composition, one end of described inductance L6 is connected with one end of electric capacity C6 and is a W phase low pressure feedback The head end of electricity branch road 2-2, one end of described resistance R6 is connected with one end of inductance L6 and is a W phase low voltage feeder branch road 2-2 End, the other end of described electric capacity C6 and the equal ground connection of the other end of resistance R6；Described second low voltage feeder props up route the 2nd U phase Low voltage feeder branch road 2-2, the 2nd V phase low voltage feeder branch road 2-2 and the 2nd W phase low voltage feeder branch road 2-2 composition, described 2nd U Phase low voltage feeder branch road 2-2 is made up of resistance R7, electric capacity C7 and inductance L7, and one end of described inductance L7 connects with one end of electric capacity C7 Connecing and be the head end of the 2nd U phase low voltage feeder branch road 2-2, one end of described resistance R7 is connected with one end of inductance L7 and is second The end of U phase low voltage feeder branch road 2-2, the other end of described electric capacity C7 and the equal ground connection of the other end of resistance R7, described 2nd V phase Low voltage feeder branch road 2-2 is made up of resistance R8, electric capacity C8 and inductance L8, and one end of described inductance L8 is connected with one end of electric capacity C8 And be the head end of the 2nd V phase low voltage feeder branch road 2-2, one end of described resistance R8 is connected with one end of inductance L8 and is the 2nd V The end of phase low voltage feeder branch road 2-2, the other end of described electric capacity C8 and the equal ground connection of the other end of resistance R8, described 2nd W phase Low voltage feeder branch road 2-2 is made up of resistance R9, electric capacity C9 and inductance L9, and one end of described inductance L9 is connected with one end of electric capacity C9 And be the head end of the 2nd W phase low voltage feeder branch road 2-2, one end of described resistance R9 is connected with one end of inductance L9 and is the 2nd W The end of phase low voltage feeder branch road 2-2, the other end of described electric capacity C9 and the equal ground connection of the other end of resistance R9；Described 3rd low pressure Feed leg is by the 3rd U phase low voltage feeder branch road 2-2, the 3rd V phase low voltage feeder branch road 2-2 and the 3rd W phase low voltage feeder branch road 2-2 forms, and described 3rd U phase low voltage feeder branch road 2-2 is made up of resistance R10, electric capacity C10 and inductance L10, described inductance L10 One end be connected and be the head end of the 3rd U phase low voltage feeder branch road 2-2 with one end of electric capacity C10, one end of described resistance R10 with One end of inductance L10 connects and is the end of the 3rd U phase low voltage feeder branch road 2-2, the other end of described electric capacity C10 and resistance The equal ground connection of the other end of R10, described 3rd V phase low voltage feeder branch road 2-2 is made up of resistance R11, electric capacity C11 and inductance L11, institute One end of one end and electric capacity C11 of stating inductance L11 is connected and is the head end of the 3rd V phase low voltage feeder branch road 2-2, described resistance One end of R11 is connected and is the end of the 3rd V phase low voltage feeder branch road 2-2 with one end of inductance L11, and described electric capacity C11's is another The equal ground connection of the other end of one end and resistance R11, described 3rd W phase low voltage feeder branch road 2-2 is by resistance R12, electric capacity C12 and inductance L12 forms, and one end of described inductance L12 is connected and is the head end of the 3rd W phase low voltage feeder branch road 2-2 with one end of electric capacity C12, One end of described resistance R12 is connected and is the end of the 3rd W phase low voltage feeder branch road 2-2, described electric capacity with one end of inductance L12 The other end of C12 and the equal ground connection of the other end of resistance R12.
In the present embodiment, the maximum value of described slide rheostat R16 is 5000 Ω, and described slide rheostat R17 is Big resistance is 500 Ω.
The Coal Mining Power Distribution System Dynamic Simulation Method of the present invention, including the simulation of following five kinds of situations:
Situation one, Coal Mining Power Distribution System load dynamic analog, detailed process is:
Step 101, Guan Bi threephase switch K1, threephase switch K3 and threephase switch K7, open threephase switch K4, threephase switch K5 and threephase switch K6, dynamic analog Coal Mining Power Distribution System is in hot stand-by duty；
Step 102, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7, dynamic analog Coal Mining Power Distribution System is in no-load running state；
The output torque of step 103, from small to large regulation magnetic powder brake 3, the start-up course of dynamic analog mining equipment；
Step 104, it is nominal torque by the output torque adjustment of magnetic powder brake 3, dynamic analog Coal Mining Power Distribution System It is in full-load run state, and dynamic analog Coal Mining Power Distribution System is in normal operating condition；
Situation two, Coal Mining Power Distribution System method of operation dynamic analog, detailed process is:
Step 201, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；
Step 202, Guan Bi single-phase switch K2, zero-sequence reactor ARC access dynamic simulator system, and dynamic analog colliery is for joining Electricity system near transformator equipped with the method for operation of zero-sequence reactor, i.e. the neutral point compensation of ground method of operation；
Step 203, opening single-phase switch K2, zero-sequence reactor ARC exits dynamic simulator system, and dynamic analog colliery is for joining Electricity system near transformator without the method for operation of zero-sequence reactor, i.e. the neutral point insulation method of operation；
Whether Coal Mining Power Distribution System is connected to zero-sequence reactor and directly affects properly functioning characteristic and the fault characteristic of system, The corresponding method of operation should be selected according to colliery difference electric power system, therefore carry out Coal Mining Power Distribution System method of operation dynamic analog Plan has important practical significance.
Situation three, Coal Mining Power Distribution System leak current fault dynamic analog, detailed process is:
Step 301, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 302, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post a～c Line terminals connects, slowly regulation slide rheostat R16, the single-phase earth leakage of dynamic analog high voltage supply circuit head end generation gradually changeable Fault；The outfan OUT1 of gradually changeable leakage analog circuit is connected with any two binding post in binding post a～c simultaneously Connect, slowly regulation slide rheostat R16, the asymmetric leak current fault of dynamic analog high voltage supply circuit head end generation gradually changeable； The outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with binding post a～c, slowly regulation slide rheostat R16, The symmetry leak current fault of dynamic analog high voltage supply circuit head end generation gradually changeable；
Step 303, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post d～f Line terminals connects, slowly regulation slide rheostat R16, the single-phase earth leakage of dynamic analog high voltage supply line end generation gradually changeable Fault；The outfan OUT1 of gradually changeable leakage analog circuit is connected with any two binding post in binding post d～f simultaneously Connect, slowly regulation slide rheostat R16, the asymmetric leak current fault of dynamic analog high voltage supply line end generation gradually changeable； The outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with binding post d～f, slowly regulation slide rheostat R16, The symmetry leak current fault of dynamic analog high voltage supply line end generation gradually changeable；
Step 304, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post g～o Line terminals connects, slowly regulation slide rheostat R16, dynamic analog difference low voltage feeder branch road 2-2 head end generation gradually changeable Single phase leak current fault；By any two terminals in the outfan OUT1 and binding post g～i of gradually changeable leakage analog circuit Son or with any two binding post in binding post j～l or with any two binding post in binding post m～o Being simultaneously connected with, slowly regulation slide rheostat R16, there is same circuit gradually in dynamic analog difference low voltage feeder branch road 2-2 head end The asymmetric leak current fault of degeneration；By any one with binding post g～i of the outfan OUT1 of gradually changeable leakage analog circuit Any one binding post in individual binding post and binding post j～l is simultaneously connected with, or by gradually changeable leakage analog circuit Outfan OUT1 and binding post g～i in any one binding post and any one wiring in binding post m～o Terminal is simultaneously connected with, or is connect with any one in binding post j～l by the outfan OUT1 of gradually changeable leakage analog circuit Any one binding post in line terminals and binding post m～o is simultaneously connected with, slowly regulation slide rheostat R16, dynamic analog Intend different low voltage feeder branch road 2-2 head end and the asymmetric leak current fault of different circuit gradually changeable occurs；By gradually changeable leakage analog The outfan OUT1 and binding post g～i of circuit are simultaneously connected with or are simultaneously connected with binding post j～l or and wiring Terminal m～o is simultaneously connected with, the symmetrical leak current fault of dynamic analog difference low voltage feeder branch road 2-2 head end generation gradually changeable；
Step 305, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post p～x Line terminals connects, slowly regulation slide rheostat R16, dynamic analog difference low voltage feeder branch road 2-2 end generation gradually changeable Single phase leak current fault；By any two in the outfan OUT1 and binding post p～r of gradually changeable leakage analog circuit, wiring Any two in terminal s～u or any two in binding post v～x are simultaneously connected with, slowly regulation slide rheostat R16, There is the asymmetric leak current fault of same circuit gradually changeable in dynamic analog difference low voltage feeder branch road 2-2 end；Gradually changeable is leaked Any one in any one and binding post s～u in the outfan OUT1 and binding post p～r of electrical analogue circuit with Time connect, or by any one in the outfan OUT1 and binding post p～r of gradually changeable leakage analog circuit and terminals Any one in sub-v～x is simultaneously connected with, or by the outfan OUT1 and binding post s～u of gradually changeable leakage analog circuit In any one and binding post v～x in any one be simultaneously connected with, slowly regulation slide rheostat R16, dynamic analog There is the asymmetric leak current fault of different circuit gradually changeable in different low voltage feeder branch road 2-2 ends；By gradually changeable leakage analog electricity The outfan OUT1 and binding post p～r on road be simultaneously connected with or with binding post s～u or with binding post v～x with Time connect, the symmetrical leak current fault of dynamic analog difference low voltage feeder branch road 2-2 end generation gradually changeable；
Electric leakage is a kind of fault that Coal Mining Power Distribution System probability of happening is the highest, easily cause the person to get an electric shock and electric cap without Preparing blast, randomness is strong, is one of major failure affecting system safety operation, therefore carries out Coal Mining Power Distribution System electric leakage Fault dynamic analog has important practical significance.
Situation four, Coal Mining Power Distribution System singlephase earth fault dynamic analog, detailed process is:
Step 401, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 402, by described short circuit analog circuit the first outfan OUT2 and binding post a～c in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, dynamic analog high voltage supply line Road head end generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slowly Regulation slide rheostat R17, there is the single-phase ground connection event through different resistance transition resistances in dynamic analog high voltage supply circuit head end Barrier；Or by any one binding post in the second outfan OUT3 and binding post a～c of described short circuit analog circuit even Connecing, close single-phase switch K11 and single-phase switch K13, open single-phase switch K14, dynamic analog high voltage supply circuit head end occurs Single-phase it is directly grounded fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, and slowly regulation is slided and become Resistance device R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog high voltage supply circuit head end；Or by institute The 3rd outfan OUT4 stating short circuit analog circuit is connected with any one binding post in binding post a～c, closes single-phase Switch K12 and single-phase switch K13, opens single-phase switch K14, and dynamic analog high voltage supply circuit head end occurs single-phase being directly grounded Fault；Guan Bi single-phase switch K12 and single-phase switch K14, opens single-phase switch K13, slowly regulation slide rheostat R17, dynamically There is the single-phase earth fault through different resistance transition resistances in simulated high-pressure supply line head end；
Step 403, by described short circuit analog circuit the first outfan OUT2 and binding post d～f in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, dynamic analog high voltage supply line Road end generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slowly Regulation slide rheostat R17, there is the single-phase ground connection event through different resistance transition resistances in dynamic analog high voltage supply line end Barrier；Or by any one binding post in the second outfan OUT3 and binding post d～f of described short circuit analog circuit even Connecing, close single-phase switch K11 and single-phase switch K13, open single-phase switch K14, dynamic analog high voltage supply line end occurs Single-phase it is directly grounded fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, and slowly regulation is slided and become Resistance device R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog high voltage supply line end；Or by institute The 3rd outfan OUT4 stating short circuit analog circuit is connected with any one binding post in binding post d～f, closes single-phase Switch K12 and single-phase switch K13, the generation of dynamic analog high voltage supply line end is single-phase is directly grounded fault；Close single-phase opening Close K12 and single-phase switch K14, open single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog high voltage supply circuit There is the single-phase earth fault through different resistance transition resistances in end；
Step 404, by described short circuit analog circuit the first outfan OUT2 and binding post g～o in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, and dynamic analog low voltage feeder props up Road 2-2 head end generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slow Slow regulation slide rheostat R17, there is single-phase connecing through different resistance transition resistance in dynamic analog low voltage feeder branch road 2-2 head end Earth fault；Or by any one terminals in the second outfan OUT3 and binding post g～o of described short circuit analog circuit Son connects, and closes single-phase switch K11 and single-phase switch K13, opens single-phase switch K14, dynamic analog low voltage feeder branch road 2-2 first End generation is single-phase is directly grounded fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, slowly regulates Slide rheostat R17, there is the single-phase ground connection event through different resistance transition resistances in dynamic analog low voltage feeder branch road 2-2 head end Barrier；Or by any one binding post in the 3rd outfan OUT4 and binding post g～o of described short circuit analog circuit even Connecing, close single-phase switch K12 and single-phase switch K13, open single-phase switch K14, dynamic analog low voltage feeder branch road 2-2 head end is sent out Life is single-phase is directly grounded fault；Guan Bi single-phase switch K12 and single-phase switch K14, opens single-phase switch K13, slowly regulates slip Rheostat R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog low voltage feeder branch road 2-2 head end；
Step 405, by described short circuit analog circuit the first outfan OUT2 and binding post p～x in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, and dynamic analog low voltage feeder props up Road 2-2 end generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slow Slow regulation slide rheostat R17, there is single-phase connecing through different resistance transition resistance in dynamic analog low voltage feeder branch road 2-2 end Earth fault；Or by any one terminals in the second outfan OUT3 and binding post p～x of described short circuit analog circuit Son connects, and closes single-phase switch K11 and single-phase switch K13, opens single-phase switch K14, dynamic analog low voltage feeder branch road 2-2 end End generation is single-phase is directly grounded fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, slowly regulates Slide rheostat R17, there is the single-phase ground connection event through different resistance transition resistances in dynamic analog low voltage feeder branch road 2-2 end Barrier；Or by any one binding post in the 3rd outfan OUT4 and binding post p～x of described short circuit analog circuit even Connecing, close single-phase switch K12 and single-phase switch K13, open single-phase switch K14, dynamic analog low voltage feeder branch road 2-2 end is sent out Life is single-phase is directly grounded fault；Guan Bi single-phase switch K12 and single-phase switch K14, opens single-phase switch K13, slowly regulates slip Rheostat R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog low voltage feeder branch road 2-2 end；
Owing to single-phase earthing point electric current is less, being submerged in again in bigger load current, single-phase earthing is that colliery is for distribution System is most difficult to a kind of fault of identification, therefore carries out Coal Mining Power Distribution System singlephase earth fault dynamic analog and have important Realistic meaning.
Situation five, Coal Mining Power Distribution System short trouble dynamic analog, detailed process is:
Step 501, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 502, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post a～c Individual binding post connects respectively, closes outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connects Two of line terminals connection, open single-phase switch K13 and single-phase switch K14, and dynamic analog high voltage supply circuit head end occurs not Symmetrical direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog high voltage supply circuit head end occurs Asymmetric ground short circuit fault；Close outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connect Two of line terminals connection, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulation slide rheostat R17, dynamically There is the asymmetric ground short circuit fault through different resistance transition resistances in simulated high-pressure supply line head end；
Step 503, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post d～f Individual binding post connects respectively, closes outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connects Two of line terminals connection, open single-phase switch K13 and single-phase switch K14, and dynamic analog high voltage supply line end occurs not Symmetrical direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog high voltage supply line end occurs Asymmetric ground short circuit fault；Close outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connect Two of line terminals connection, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulation slide rheostat R17, dynamically There is the asymmetric ground short circuit fault through different resistance transition resistances in simulated high-pressure supply line end；
Step 504, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post g～i Individual binding post or with any two binding post in binding post j～l or with any two in binding post m～o Binding post connects respectively, outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, open single-phase switch K13 and single-phase switch K14, and dynamic analog low voltage feeder branch road 2-2 head end occurs not Symmetrical direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog low voltage feeder branch road 2-2 head end is sent out Raw asymmetric ground short circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 with Two of binding post connection, Guan Bi single-phase switch K14 also opens single-phase switch K13, and slowly regulation slide rheostat R17 is dynamic Morphotype is intended low voltage feeder branch road 2-2 head end and the asymmetric ground short circuit fault through different resistance transition resistances is occurred；
Step 505, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post p～r Individual binding post or with any two binding post in binding post s～u or with any two in binding post v～x Binding post connects respectively, outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, open single-phase switch K13 and single-phase switch K14, and dynamic analog low voltage feeder branch road 2-2 end occurs not Symmetrical direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and wiring Two of terminal connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog low voltage feeder branch road 2-2 end is sent out Raw asymmetric ground short circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 with Two of binding post connection, Guan Bi single-phase switch K14 also opens single-phase switch K13, and slowly regulation slide rheostat R17 is dynamic Morphotype is intended low voltage feeder branch road 2-2 end and the asymmetric ground short circuit fault through different resistance transition resistances is occurred；
Step 506, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit 3rd outfan OUT4 of OUT3 and short circuit analog circuit is connected with binding post a～c respectively, closes single-phase switch K10, single-phase Switch K11, single-phase switch K12 and single-phase switch K13, opens single-phase switch K14, and dynamic analog high voltage supply circuit head end occurs Symmetric metal short trouble；Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open Single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog high voltage supply circuit head end occurs through different resistance transition The symmetry short trouble of resistance；
Step 507, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit 3rd outfan OUT4 of OUT3 and short circuit analog circuit is connected with binding post d～f respectively, closes single-phase switch K10, single-phase Switch K11, single-phase switch K12 and single-phase switch K13, opens single-phase switch K14, and dynamic analog high voltage supply line end occurs Symmetric metal short trouble；Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open Single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog high voltage supply line end occurs through different resistance transition The symmetry short trouble of resistance；
Step 508, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit OUT3 and short circuit analog circuit the 3rd outfan OUT4 respectively with binding post g～i or respectively with binding post j～l or It is connected with binding post m～o respectively, Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K13, Open single-phase switch K14, dynamic analog low voltage feeder branch road 2-2 head end generation symmetric metal short trouble；Close single-phase opening Close K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open single-phase switch K13, slowly regulate slide rheostat R17, there is the symmetry short trouble through different resistance transition resistances in dynamic analog low voltage feeder branch road 2-2 head end；
Step 509, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit OUT3 and short circuit analog circuit the 3rd outfan OUT4 respectively with binding post p～r or respectively with binding post s～u or It is connected with binding post v～x respectively, Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K13, Open single-phase switch K14, dynamic analog low voltage feeder branch road 2-2 end generation symmetric metal short trouble；Close single-phase opening Close K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open single-phase switch K13, slowly regulate slide rheostat R17, there is the symmetry short trouble through different resistance transition resistances in dynamic analog low voltage feeder branch road 2-2 end.
Short circuit is a kind of fault that Coal Mining Power Distribution System failure effect is the most serious, at present, and colliery large-area power-cuts thing Therefore mainly caused by short trouble, therefore carry out Coal Mining Power Distribution System short trouble dynamic analog and there is important reality Meaning.
In the present embodiment, the Coal Mining Power Distribution System Dynamic Simulation Method of the present invention, also include the mould of following three kinds of situations Intend:
Situation six, Coal Mining Power Distribution System earth leakage protective performance dynamic analog, detailed process is:
Step 601, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 602, by the secondary side winding of zero sequence current mutual inductor CT2, the secondary side winding of zero sequence current mutual inductor CT3 With the secondary side winding of zero sequence current mutual inductor CT4, and the secondary side winding of voltage transformer pt 2 is all connected to ore deposit to be tested Use comprehensive protection device；
Step 603, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post g～i Line terminals connects, slowly regulation slide rheostat R16, dynamic analog the first low voltage feeder branch road head end generation gradually changeable single-phase Leak current fault；Or the outfan OUT1 of gradually changeable leakage analog circuit is connected with any two in binding post g～i simultaneously Connecing, slowly regulation slide rheostat R16, there is the most right of same circuit gradually changeable in dynamic analog the first low voltage feeder branch road head end Steelyard slepsydra electric fault；Or the outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with binding post g～i, dynamic analog Intend the symmetrical leak current fault of different low voltage feeder branch road 2-2 head end generation gradually changeable；
Step 604, check the action situation of switch and judge the earth leakage protective selectivity of mining comprehensive protector to be tested Can: when threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining The earth leakage protective horizontal selection of comprehensive protection device is functional；When threephase switch K4 does not change closure state, threephase switch K5 or When threephase switch K6 opens, it is judged that bad for the earth leakage protective horizontal selection performance of mining comprehensive protector to be tested；Work as three-phase Switch K4 does not change closure state, when threephase switch K3 opens, it is judged that earth leakage protective vertical for mining comprehensive protector to be tested To selecting, performance is bad；
Step 605, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post p～r Line terminals connects, the resistance of regulation slide rheostat R16 to maximum, and dynamic analog the first low voltage feeder branch road end occurs single Phase leak current fault；Or by any two in the outfan OUT1 and binding post p～r of gradually changeable leakage analog circuit simultaneously Connecting, the resistance of regulation slide rheostat R16 to maximum, there is same circuit in dynamic analog the first low voltage feeder branch road end Asymmetric leak current fault；
Step 606, check the action situation of switch and judge the earth leakage protective susceptiveness of mining comprehensive protector to be tested Can: when threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining Comprehensive protection device is earth leakage protective sensitive functional；When threephase switch K4, threephase switch K5 and threephase switch K6 do not change During closure state, it is judged that bad for the earth leakage protective sensitive performance of mining comprehensive protector to be tested；
Earth leakage protective is that colliery powers one of three big protections, is to ensure that the major measure that power supply safety, the prevention person get an electric shock, Apply the earth leakage protective malfunction rate in colliery to remain high at present, therefore carry out Coal Mining Power Distribution System earth leakage protective performance dynamic Simulation has important practical significance.
When being embodied as, it is also possible to be respectively provided with the second low voltage feeder branch road or the 3rd low voltage feeder branch road occurs various types of The leak current fault of type, carrys out the earth leakage protective performance of dynamic analog mining comprehensive protector to be tested.
There are various types of leak current faults when arranging the second low voltage feeder branch road, test mining integrated protection to be tested During the earth leakage protective performance of device, concrete process is as follows:
Step 607, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 608, by the secondary side winding of zero sequence current mutual inductor CT2, the secondary side winding of zero sequence current mutual inductor CT3 With the secondary side winding of zero sequence current mutual inductor CT4, and the secondary side winding of voltage transformer pt 2 is all connected to ore deposit to be tested Use comprehensive protection device；
Step 609, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post j～l Line terminals connects, slowly regulation slide rheostat R16, dynamic analog the second low voltage feeder branch road head end generation gradually changeable single-phase Leak current fault；Or the outfan OUT1 of gradually changeable leakage analog circuit is connected with any two in binding post j～l simultaneously Connecing, slowly regulation slide rheostat R16, there is the most right of same circuit gradually changeable in dynamic analog the second low voltage feeder branch road head end Steelyard slepsydra electric fault；Or the outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with binding post j～l, dynamic analog Intend the symmetrical leak current fault of different low voltage feeder branch road 2-2 head end generation gradually changeable；
Step 6010, check the action situation of switch and judge the earth leakage protective selectivity of mining comprehensive protector to be tested Can: when threephase switch K5 opens, when threephase switch K4 and threephase switch K6 does not changes closure state, it is judged that for be tested mining The earth leakage protective horizontal selection of comprehensive protection device is functional；When threephase switch K5 does not change closure state, threephase switch K4 or When threephase switch K6 opens, it is judged that bad for the earth leakage protective horizontal selection performance of mining comprehensive protector to be tested；Work as three-phase Switch K5 does not change closure state, when threephase switch K3 opens, it is judged that earth leakage protective vertical for mining comprehensive protector to be tested To selecting, performance is bad；
Step 6011, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post s～u Line terminals connects, the resistance of regulation slide rheostat R16 to maximum, and dynamic analog the second low voltage feeder branch road end occurs single Phase leak current fault；Or by any two in the outfan OUT1 and binding post s～u of gradually changeable leakage analog circuit simultaneously Connecting, the resistance of regulation slide rheostat R16 to maximum, there is same circuit in dynamic analog the second low voltage feeder branch road end Asymmetric leak current fault；
Step 6012, check the action situation of switch and judge the earth leakage protective susceptiveness of mining comprehensive protector to be tested Can: when threephase switch K5 opens, when threephase switch K4 and threephase switch K6 does not changes closure state, it is judged that for be tested mining Comprehensive protection device is earth leakage protective sensitive functional；When threephase switch K4, threephase switch K5 and threephase switch K6 do not change During closure state, it is judged that bad for the earth leakage protective sensitive performance of mining comprehensive protector to be tested.
There are various types of leak current faults when arranging the 3rd low voltage feeder branch road, test mining integrated protection to be tested During the earth leakage protective performance of device, concrete process is as follows:
Step 6013, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 6014, by the secondary side winding of zero sequence current mutual inductor CT2, zero sequence current mutual inductor CT3 secondary side around Organize and the secondary side winding of zero sequence current mutual inductor CT4, and the secondary side winding of voltage transformer pt 2 is all connected to be tested Mining comprehensive protector；
Step 6015, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post m～o Line terminals connects, slowly regulation slide rheostat R16, dynamic analog the 3rd low voltage feeder branch road head end generation gradually changeable single-phase Leak current fault；Or the outfan OUT1 of gradually changeable leakage analog circuit is connected with any two in binding post m～o simultaneously Connecing, slowly regulation slide rheostat R16, there is the most right of same circuit gradually changeable in dynamic analog the 3rd low voltage feeder branch road head end Steelyard slepsydra electric fault；Or the outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with binding post m～o, dynamic analog Intend the symmetrical leak current fault of different low voltage feeder branch road 2-2 head end generation gradually changeable；
Step 6016, check the action situation of switch and judge the earth leakage protective selectivity of mining comprehensive protector to be tested Can: when threephase switch K6 opens, when threephase switch K4 and threephase switch K5 does not changes closure state, it is judged that for be tested mining The earth leakage protective horizontal selection of comprehensive protection device is functional；When threephase switch K6 does not change closure state, threephase switch K4 or When threephase switch K5 opens, it is judged that bad for the earth leakage protective horizontal selection performance of mining comprehensive protector to be tested；Work as three-phase Switch K6 does not change closure state, when threephase switch K3 opens, it is judged that earth leakage protective vertical for mining comprehensive protector to be tested To selecting, performance is bad；
Step 6017, the outfan OUT1 of gradually changeable leakage analog circuit is connect with any one in binding post v～x Line terminals connects, the resistance of regulation slide rheostat R16 to maximum, and dynamic analog the 3rd low voltage feeder branch road end occurs single Phase leak current fault；Or by any two in the outfan OUT1 and binding post v～x of gradually changeable leakage analog circuit simultaneously Connecting, the resistance of regulation slide rheostat R16 to maximum, there is same circuit in dynamic analog the 3rd low voltage feeder branch road end Asymmetric leak current fault；
Step 6018, check the action situation of switch and judge the earth leakage protective susceptiveness of mining comprehensive protector to be tested Can: when threephase switch K6 opens, when threephase switch K4 and threephase switch K6 does not changes closure state, it is judged that for be tested mining Comprehensive protection device is earth leakage protective sensitive functional；When threephase switch K4, threephase switch K5 and threephase switch K6 do not change During closure state, it is judged that bad for the earth leakage protective sensitive performance of mining comprehensive protector to be tested.
Situation seven, Coal Mining Power Distribution System short-circuit protection performance dynamic analog, detailed process is:
Step 701, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 702, by the secondary side winding of single-phase current transformer CT5, single-phase current transformer CT6 secondary side around Group, the secondary side winding of single-phase current transformer CT7, the secondary side winding of single-phase current transformer CT8, single-phase current transformer The secondary side winding of CT9, the secondary side winding of single-phase current transformer CT10, single-phase current transformer CT11 secondary side around Group, the secondary side winding of single-phase current transformer CT12 and the secondary side winding of single-phase current transformer CT13, and voltage is mutual The secondary side winding of sensor PT2 is all connected to mining comprehensive protector to be tested；
Step 703, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post p～r Individual binding post connects respectively, closes outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connects Two of line terminals connection, open single-phase switch K13 and single-phase switch K14, and dynamic analog the first low voltage feeder branch road end is sent out Raw asymmetric direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 with Two of binding post connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, dynamic analog the first low voltage feeder branch road There is asymmetric ground short circuit fault in end；In Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12, correspondence is defeated Going out and hold two be connected with binding post, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulates slide rheostat R17, there is the asymmetric ground short circuit fault through different resistance transition resistances in dynamic analog the first low voltage feeder branch road end；
Step 704, check the action situation of switch and judge the selection of short-circuit protection of mining comprehensive protector to be tested Performance and sensitive performance: when threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that Laterally selection for mining comprehensive protector short-circuit protection to be tested is functional；When threephase switch K4 does not change closure state, When threephase switch K5 or threephase switch K6 opens, it is judged that laterally select performance for mining comprehensive protector short-circuit protection to be tested Bad；When threephase switch K4 does not change closure state, and threephase switch K3 opens, it is judged that short for mining comprehensive protector to be tested The longitudinal direction of road protection selects performance bad；When threephase switch K4, threephase switch K5 and threephase switch K6 the most do not change closure state Time, it is judged that the sensitive performance for mining comprehensive protector short-circuit protection to be tested is bad；
Step 705, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit 3rd outfan OUT4 of OUT3 and short circuit analog circuit is connected with binding post g～i respectively, closes single-phase switch K10, single-phase Switch K11, single-phase switch K12 and single-phase switch K13, opens single-phase switch K14, dynamic analog the first low voltage feeder branch road head end There is symmetric metal short trouble；
Step 706, check the action situation of switch and judge the short-circuit protection reliability of mining comprehensive protector to be tested Can: when threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining The unfailing performance of comprehensive protection device short-circuit protection is good；When threephase switch K4 does not change closure state, threephase switch K5 or three-phase When switch K6 opens, or when threephase switch K4, threephase switch K5 and threephase switch K6 do not change closure state, it is judged that for treating The unfailing performance of test mining comprehensive protector short-circuit protection is bad；
Short-circuit protection is that colliery powers one of three big protections, is to ensure that power supply safety, avoids colliery large area blackout Major measure, apply at present the short-circuit protection malfunction rate in colliery remain high, therefore carry out Coal Mining Power Distribution System short circuit Protective value dynamic analog has important practical significance.
When being embodied as, it is also possible to be respectively provided with the second low voltage feeder branch road or the 3rd low voltage feeder branch road occurs various types of The short trouble of type, carrys out the short-circuit protection performance of dynamic analog mining comprehensive protector to be tested.
There are various types of short troubles when arranging the second low voltage feeder branch road, test mining integrated protection to be tested During the short-circuit protection performance of device, concrete process is as follows:
Step 707, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 708, the secondary side winding of single-phase current transformer CT5, the secondary side winding of single-phase current transformer CT6, The secondary side winding of single-phase current transformer CT7, the secondary side winding of single-phase current transformer CT8, single-phase current transformer CT9 Secondary side winding, the secondary side winding of single-phase current transformer CT10, the secondary side winding of single-phase current transformer CT11, list The secondary side winding of phase current mutual inductor CT12 and the secondary side winding of single-phase current transformer CT13, and voltage transformer The secondary side winding of PT2 is all connected to mining comprehensive protector to be tested；
Step 709, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post s～u Individual binding post connects respectively, closes outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connects Two of line terminals connection, open single-phase switch K13 and single-phase switch K14, and dynamic analog the second low voltage feeder branch road end is sent out Raw asymmetric direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 with Two of binding post connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, dynamic analog the second low voltage feeder branch road There is asymmetric ground short circuit fault in end；In Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12, correspondence is defeated Going out and hold two be connected with binding post, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulates slide rheostat R17, there is the asymmetric ground short circuit fault through different resistance transition resistances in dynamic analog the second low voltage feeder branch road end；
Step 7010, check the action situation of switch and judge the selection of short-circuit protection of mining comprehensive protector to be tested Performance and sensitive performance: when threephase switch K5 opens, when threephase switch K4 and threephase switch K6 does not changes closure state, it is judged that Laterally selection for mining comprehensive protector short-circuit protection to be tested is functional；When threephase switch K5 does not change closure state, When threephase switch K4 or threephase switch K6 opens, it is judged that laterally select performance for mining comprehensive protector short-circuit protection to be tested Bad；When threephase switch K5 does not change closure state, and threephase switch K3 opens, it is judged that short for mining comprehensive protector to be tested The longitudinal direction of road protection selects performance bad；When threephase switch K4, threephase switch K5 and threephase switch K6 the most do not change closure state Time, it is judged that the sensitive performance for mining comprehensive protector short-circuit protection to be tested is bad；
Step 7011, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit 3rd outfan OUT4 of OUT3 and short circuit analog circuit is connected with binding post j～l respectively, closes single-phase switch K10, single-phase Switch K11, single-phase switch K12 and single-phase switch K13, opens single-phase switch K14, dynamic analog the second low voltage feeder branch road head end There is symmetric metal short trouble；
Step 7012, check the action situation of switch and judge the short-circuit protection reliability of mining comprehensive protector to be tested Can: when threephase switch K5 opens, when threephase switch K4 and threephase switch K6 does not changes closure state, it is judged that for be tested mining The unfailing performance of comprehensive protection device short-circuit protection is good；When threephase switch K5 does not change closure state, threephase switch K4 or three-phase When switch K6 opens, or when threephase switch K4, threephase switch K5 and threephase switch K6 do not change closure state, it is judged that for treating The unfailing performance of test mining comprehensive protector short-circuit protection is bad.
There are various types of short troubles when arranging the 3rd low voltage feeder branch road, test mining integrated protection to be tested During the short-circuit protection performance of device, concrete process is as follows:
Step 7013, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 7014, the secondary side winding of single-phase current transformer CT5, the secondary side winding of single-phase current transformer CT6, The secondary side winding of single-phase current transformer CT7, the secondary side winding of single-phase current transformer CT8, single-phase current transformer CT9 Secondary side winding, the secondary side winding of single-phase current transformer CT10, the secondary side winding of single-phase current transformer CT11, list The secondary side winding of phase current mutual inductor CT12 and the secondary side winding of single-phase current transformer CT13, and voltage transformer The secondary side winding of PT2 is all connected to mining comprehensive protector to be tested；
Step 7015, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit Any two outfan in 3rd outfan OUT4 of OUT3 and short circuit analog circuit and any two in binding post v～x Individual binding post connects respectively, closes outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connects Two of line terminals connection, open single-phase switch K13 and single-phase switch K14, and dynamic analog the 3rd low voltage feeder branch road end is sent out Raw asymmetric direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 with Two of binding post connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, dynamic analog the 3rd low voltage feeder branch road There is asymmetric ground short circuit fault in end；In Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12, correspondence is defeated Going out and hold two be connected with binding post, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulates slide rheostat R17, there is the asymmetric ground short circuit fault through different resistance transition resistances in dynamic analog the 3rd low voltage feeder branch road end；
Step 7016, check the action situation of switch and judge the selection of short-circuit protection of mining comprehensive protector to be tested Performance and sensitive performance: when threephase switch K6 opens, when threephase switch K4 and threephase switch K5 does not changes closure state, it is judged that Laterally selection for mining comprehensive protector short-circuit protection to be tested is functional；When threephase switch K6 does not change closure state, When threephase switch K4 or threephase switch K5 opens, it is judged that laterally select performance for mining comprehensive protector short-circuit protection to be tested The worst；When threephase switch K6 does not change closure state, and threephase switch K3 opens, it is judged that for mining integrated protection to be tested The longitudinal direction of device short-circuit protection selects functional bad；When threephase switch K4, threephase switch K5 and threephase switch K6 do not change During closure state, it is judged that the sensitive performance for mining comprehensive protector short-circuit protection to be tested is bad；
Step 7017, the first outfan OUT2 by described short circuit analog circuit, the second outfan of short circuit analog circuit 3rd outfan OUT4 of OUT3 and short circuit analog circuit is connected with binding post m～o respectively, closes single-phase switch K10, single-phase Switch K11, single-phase switch K12 and single-phase switch K13, opens single-phase switch K14, dynamic analog the second low voltage feeder branch road head end There is symmetric metal short trouble；
Step 7018, check the action situation of switch and judge the short-circuit protection reliability of mining comprehensive protector to be tested Can: when threephase switch K6 opens, when threephase switch K4 and threephase switch K5 does not changes closure state, it is judged that for be tested mining The unfailing performance of comprehensive protection device short-circuit protection is good；When threephase switch K6 does not change closure state, threephase switch K4 or three-phase When switch K5 opens, or when threephase switch K4, threephase switch K5 and threephase switch K6 do not change closure state, it is judged that for treating The unfailing performance of test mining comprehensive protector short-circuit protection is bad.
Situation eight, Coal Mining Power Distribution System one-phase ground protection dynamic analog, detailed process is:
Step 801, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 802, by the secondary side winding of zero sequence current mutual inductor CT2, the secondary side winding of zero sequence current mutual inductor CT3 With the secondary side winding of zero sequence current mutual inductor CT4, and the secondary side winding of voltage transformer pt 2 is all connected to ore deposit to be tested Use comprehensive protection device；
Step 803, by described short circuit analog circuit the first outfan OUT2 and binding post g～i in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, and dynamic analog the first low voltage feeder branch road head end occurs single It is directly grounded fault mutually, closes single-phase switch K10 and single-phase switch K14, open single-phase switch K13, slowly regulation slip variable resistance Device R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog the first low voltage feeder branch road head end；Or will Second outfan OUT3 of described short circuit analog circuit is connected with any one binding post in binding post g～i, and Guan Bi is single Switch K11 and single-phase switch K13 mutually, there is the single-phase fault that is directly grounded, Guan Bi in dynamic analog the first low voltage feeder branch road head end Single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, slowly regulation slide rheostat R17, and dynamic analog first is low There is the single-phase earth fault through different resistance transition resistances in voltage feed branch road head end；Or the by described short circuit analog circuit Three outfan OUT4 are connected with any one binding post in binding post g～i, Guan Bi single-phase switch K12 and single-phase switch K13, there is the single-phase fault that is directly grounded in dynamic analog the first low voltage feeder branch road head end, Guan Bi single-phase switch K12 and single-phase open Closing K14, open single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog the first low voltage feeder branch road head end occurs The single-phase earth fault through different resistance transition resistances；
Step 804, check the action situation of switch and judge the one-phase ground protection of mining comprehensive protector to be tested Can: when threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining Laterally selecting of comprehensive protection device one-phase ground protection is functional；When threephase switch K4 does not change closure state, threephase switch When K5 or threephase switch K6 opens, it is judged that horizontal for mining comprehensive protector one-phase ground protection to be tested selects performance not Good；When threephase switch K4 does not change closure state, and threephase switch K3 opens, it is judged that single-phase for mining comprehensive protector to be tested The longitudinal direction of ground protection selects performance bad.
One-phase ground protection is that colliery powers one of three big protections, is to ensure that power supply safety, reduces short trouble and occur general The major measure of rate, applies the one-phase ground protection malfunction rate in colliery to remain high at present, therefore carries out colliery for power distribution system System one-phase ground protection dynamic analog has important practical significance.
When being embodied as, it is also possible to be respectively provided with the second low voltage feeder branch road or the 3rd low voltage feeder branch road occurs various types of The singlephase earth fault of type, carrys out the one-phase ground protection performance of dynamic analog mining comprehensive protector to be tested.
There are various types of short troubles when arranging the second low voltage feeder branch road, test mining integrated protection to be tested During the one-phase ground protection performance of device, concrete process is as follows:
Step 805, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 806, by the secondary side winding of zero sequence current mutual inductor CT2, the secondary side winding of zero sequence current mutual inductor CT3 With the secondary side winding of zero sequence current mutual inductor CT4, and the secondary side winding of voltage transformer pt 2 is all connected to ore deposit to be tested Use comprehensive protection device；
Step 807, by described short circuit analog circuit the first outfan OUT2 and binding post j～l in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, and dynamic analog the second low voltage feeder branch road head end occurs single It is directly grounded fault mutually, closes single-phase switch K10 and single-phase switch K14, open single-phase switch K13, slowly regulation slip variable resistance Device R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog the second low voltage feeder branch road head end；Or will Second outfan OUT3 of described short circuit analog circuit is connected with any one binding post in binding post j～l, and Guan Bi is single Switch K11 and single-phase switch K13 mutually, there is the single-phase fault that is directly grounded, Guan Bi in dynamic analog the second low voltage feeder branch road head end Single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, slowly regulation slide rheostat R17, and dynamic analog second is low There is the single-phase earth fault through different resistance transition resistances in voltage feed branch road head end；Or the by described short circuit analog circuit Three outfan OUT4 are connected with any one binding post in binding post j～l, Guan Bi single-phase switch K12 and single-phase switch K13, there is the single-phase fault that is directly grounded in dynamic analog the second low voltage feeder branch road head end, Guan Bi single-phase switch K12 and single-phase open Closing K14, open single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog the second low voltage feeder branch road head end occurs The single-phase earth fault through different resistance transition resistances；
Step 808, check the action situation of switch and judge the one-phase ground protection of mining comprehensive protector to be tested Can: when threephase switch K5 opens, when threephase switch K4 and threephase switch K6 does not changes closure state, it is judged that for be tested mining Laterally selecting of comprehensive protection device one-phase ground protection is functional；When threephase switch K5 does not change closure state, threephase switch When K4 or threephase switch K6 opens, it is judged that horizontal for mining comprehensive protector one-phase ground protection to be tested selects performance not Good；When threephase switch K5 does not change closure state, and threephase switch K3 opens, it is judged that single-phase for mining comprehensive protector to be tested The longitudinal direction of ground protection selects performance bad.
There are various types of short troubles when arranging the 3rd low voltage feeder branch road, test mining integrated protection to be tested During the one-phase ground protection performance of device, concrete process is as follows:
Step 809, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and Threephase switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 8010, by the secondary side winding of zero sequence current mutual inductor CT2, zero sequence current mutual inductor CT3 secondary side around Organize and the secondary side winding of zero sequence current mutual inductor CT4, and the secondary side winding of voltage transformer pt 2 is all connected to be tested Mining comprehensive protector；
Step 8011, by described short circuit analog circuit the first outfan OUT2 and binding post m～o in any one Binding post connects, and closes single-phase switch K10 and single-phase switch K13, and dynamic analog the 3rd low voltage feeder branch road head end occurs single It is directly grounded fault mutually, closes single-phase switch K10 and single-phase switch K14, open single-phase switch K13, slowly regulation slip variable resistance Device R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog the 3rd low voltage feeder branch road head end；Or will Second outfan OUT3 of described short circuit analog circuit is connected with any one binding post in binding post m～o, and Guan Bi is single Switch K11 and single-phase switch K13 mutually, there is the single-phase fault that is directly grounded, Guan Bi in dynamic analog the 3rd low voltage feeder branch road head end Single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, slowly regulation slide rheostat R17, and dynamic analog the 3rd is low There is the single-phase earth fault through different resistance transition resistances in voltage feed branch road head end；Or the by described short circuit analog circuit Three outfan OUT4 are connected with any one binding post in binding post m～o, Guan Bi single-phase switch K12 and single-phase switch K13, there is the single-phase fault that is directly grounded in dynamic analog the 3rd low voltage feeder branch road head end, Guan Bi single-phase switch K12 and single-phase open Closing K14, open single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog the 3rd low voltage feeder branch road head end occurs The single-phase earth fault through different resistance transition resistances；
Step 8012, check the action situation of switch and judge the one-phase ground protection of mining comprehensive protector to be tested Can: when threephase switch K6 opens, when threephase switch K4 and threephase switch K5 does not changes closure state, it is judged that for be tested mining Laterally selecting of comprehensive protection device one-phase ground protection is functional；When threephase switch K6 does not change closure state, threephase switch When K4 or threephase switch K5 opens, it is judged that the horizontal of one-phase ground protection for mining comprehensive protector to be tested selects performance not Good；When threephase switch K6 does not change closure state, and threephase switch K3 opens, it is judged that single-phase for mining comprehensive protector to be tested The longitudinal direction of ground protection selects performance bad.
In the case of above eight kinds, when threephase switch K7 opens, it is preferably not have the Coal Mining Power Distribution System of harmonic wave dynamic Simulation；During threephase switch K7 Guan Bi, due to electric locomotive, frequency control equipment, pulling equipment pair in simulation Coal Mining Power Distribution System The quality of power supply of electric power system is polluted, dynamic for the Coal Mining Power Distribution System carried out under severe power supply quality pollutional condition Simulation.It addition, during threephase switch K7 Guan Bi, additionally it is possible to use this analog systems that the regulation effect of harmonic treating apparatus is surveyed Examination.
In the present embodiment, the maximum value of described slide rheostat R16 is 5000 Ω, change in resistance scope be 1000 Ω～ 5000Ω；The maximum value of described slide rheostat R17 is 500 Ω.When the resistance of slide rheostat R16 is 1000 ohm, Simulation is person electric shock fault.
The above, be only presently preferred embodiments of the present invention, not impose any restrictions the present invention, every according to the present invention Any simple modification, change and the equivalent structure change that above example is made by technical spirit, all still falls within skill of the present invention In the protection domain of art scheme.

Claims (5)

1. a Coal Mining Power Distribution System Dynamic Simulation Method, the Coal Mining Power Distribution System dynamic simulator system used includes using The high-voltage power supply circuit (1) of power supply is exported and for by high-voltage power supply circuit (1) after being 10kV voltage by 380V voltage transformation The 10kV voltage transformation of output is the low voltage feeder circuit (2) exporting power supply after 3300V voltage, and the magnetic for fictitious load Powder brake (3) and the fault simulation circuit (4) being connected with high-voltage power supply circuit (1) or low voltage feeder circuit (2)；Described high pressure Power supply circuits (1) are connected with 380V civil power transmission line of electricity (5), and described low voltage feeder circuit (2) includes for being become by 10kV voltage The reduction voltage circuit (2-1) being changed to 3300V voltage and the low voltage feeder branch road (2-2) being connected with reduction voltage circuit (2-1), and with fall The harmonic source (2-3) that volt circuit (2-1) and low voltage feeder branch road (2-2) are all connected with, described magnetic powder brake (3) and low voltage feeder Branch road (2-2) connects；Described high-voltage power supply circuit (1) includes for by booster transformer that 380V voltage transformation is 10kV voltage T1, high voltage supply circuit and zero-sequence reactor ARC, described booster transformer T1 is three-phase two-simulation transformer, described liter of buckling The first side winding of depressor T1 is delta connection, and the secondary side winding of described booster transformer T1 is star connection, described liter The first side winding of pressure transformer T1 is connected by threephase switch K1 and 380V civil power transmission line of electricity (5), described zero-sequence reactor One end of ARC is connected with the neutral point of the secondary side winding of booster transformer T1 by single-phase switch K2, described high voltage supply line Route A phase high voltage supply circuit, B phase high voltage supply circuit and C phase high voltage supply circuit composition, described A phase high voltage supply circuit Head end be binding post a and the first terminals with the secondary side winding of booster transformer T1 are connected, described B phase high voltage supply The head end of circuit is binding post b and the second terminals with the secondary side winding of booster transformer T1 are connected, described C phase high pressure The head end of supply line is binding post c and the 3rd terminals with the secondary side winding of booster transformer T1 are connected；Described fall Volt circuit (2-1) is made up of step-down transformer T2, and described step-down transformer T2 is three-phase two-simulation transformer, described downconverter The first side winding of device T2 is delta connection, and the secondary side winding of described step-down transformer T2 is star connection, described low pressure The quantity of feed leg (2-2) is three articles and the respectively first low voltage feeder branch road, the second low voltage feeder branch road and the 3rd low pressure Feed leg, three terminals of the first side winding of described step-down transformer T2 respectively with described A phase high voltage supply circuit The end of end, the end of described B phase high voltage supply circuit and described C phase high voltage supply circuit connects, described A phase high voltage supply The end of the end of circuit, the end of described B phase high voltage supply circuit and described C phase high voltage supply circuit is respectively binding post D, binding post e and binding post f, described harmonic source (2-3) by the threephase switch K7 that is sequentially connected in series and threephase switch K3 with Three terminals of the secondary side winding of described step-down transformer T2 connect, and described first low voltage feeder branch road passes through threephase switch K4 connects with the connecting line being connected threephase switch K7 and threephase switch K3, and described second low voltage feeder branch road passes through threephase switch K5 Be connected threephase switch K7 and threephase switch K3 connecting line connect, described 3rd low voltage feeder branch road by threephase switch K6 with The connecting line connecting threephase switch K7 and threephase switch K3 connects, and the three-phase input end of described first low voltage feeder branch road is respectively Binding post g, binding post h and binding post i, the three-phase input end of described second low voltage feeder branch road is respectively binding post J, binding post k and binding post l, the three-phase input end of described 3rd low voltage feeder branch road is respectively binding post m, terminals Sub-n and binding post o, three-phase output end respectively binding post p, the binding post q of described first low voltage feeder branch road and connect Line terminals r, the three-phase output end of described second low voltage feeder branch road is respectively binding post s, binding post t and binding post u, The three-phase output end of described 3rd low voltage feeder branch road is respectively binding post v, binding post w and binding post x；Described fault Analog circuit (4) includes gradually changeable leakage analog circuit and short circuit analog circuit, and described gradually changeable leakage analog circuit is by single-phase Switch K9 and slide rheostat R16 composition, the sliding end ground connection of described slide rheostat R16, the one of described slide rheostat R16 Individual fixing end is connected with one end of single-phase switch K9, and the other end of described single-phase switch K9 is the defeated of gradually changeable leakage analog circuit Go out to hold OUT1；Described short circuit analog circuit by slide rheostat R17, single-phase switch K10, single-phase switch K11, single-phase switch K12, Single-phase switch K13 and single-phase switch K14 composition, the fixing end of of described slide rheostat R17 is by single-phase switch K14 and list The one end switching one end of K10, one end of single-phase switch K11, one end of single-phase switch K12 and single-phase switch K13 mutually connects, institute Stating the sliding end of slide rheostat R17 and the equal ground connection of the other end of single-phase switch K13, the other end of described single-phase switch K10 is First outfan OUT2 of short circuit analog circuit, the other end of described single-phase switch K11 is the second output of short circuit analog circuit End OUT3, the other end of described single-phase switch K12 is the 3rd outfan OUT4 of short circuit analog circuit；Described gradually changeable electric leakage mould Intend circuit outfan OUT1 and binding post a～c or wherein any one, any two binding post, or with binding post d ～f or wherein any one, any two binding post, with binding post g～i or wherein any one, any two connects Line terminals, or with binding post j～l or wherein any one, any two binding post, or with binding post m～o or wherein Any one, any two binding post, with binding post p～r or wherein any one, any two binding post, or With binding post s～u or wherein any one, any two binding post, with binding post v～x or wherein any one, Any two binding post connects；First outfan OUT2 of described short circuit analog circuit, the second output of short circuit analog circuit Any with binding post a～x of any one outfan in 3rd outfan OUT4 of end OUT3 and short circuit analog circuit One binding post connects, or the second output of the first outfan OUT2 of described short circuit analog circuit, short circuit analog circuit Any with binding post a～c of any two outfan in 3rd outfan OUT4 of end OUT3 and short circuit analog circuit Two binding posts or with any two binding post in binding post d～f or with any two in binding post g～i Individual binding post or with any two binding post in binding post j～l or with any two in binding post m～o Binding post or with any two binding post in binding post p～r or connect with any two in binding post s～u Line terminals or be connected with any two binding post in binding post v～x, or described short circuit analog circuit is first defeated Go out to hold OUT2, short circuit analog circuit the second outfan OUT3 and short circuit analog circuit the 3rd outfan OUT4 respectively with wiring Terminal a～c or respectively with binding post d～f respectively with binding post g～i or respectively with binding post j～l or point Not and binding post m～o or respectively with binding post p～r respectively with binding post s～u or respectively with binding post v ～x connects；Described single-phase switch K2 has monophase current mutual with being connected on the connection line of the secondary side winding of booster transformer T1 Sensor CT1, described high voltage supply circuit has mutual induction of voltage with being connected on the connection line of the secondary side winding of booster transformer T1 Device PT1；Described threephase switch K3 connects on the connection line of three terminals of the secondary side winding of described step-down transformer T2 It is connected to voltage transformer pt 2, the company that described threephase switch K4 connects with the connecting line being connected threephase switch K7 and threephase switch K3 Connect on link and have zero sequence current mutual inductor CT2, single-phase current transformer CT5, single-phase current transformer CT6 and monophase current On the connection line that transformer CT7, described threephase switch K5 connect with the connecting line being connected threephase switch K7 and threephase switch K3 Connect and have zero sequence current mutual inductor CT3, single-phase current transformer CT8, single-phase current transformer CT9 and single-phase current transformer Connect on the connection line that CT10, described threephase switch K6 connect with the connecting line being connected threephase switch K7 and threephase switch K3 and have Zero sequence current mutual inductor CT4, single-phase current transformer CT11, single-phase current transformer CT12 and single-phase current transformer CT13； It is characterized in that the method includes the simulation of following five kinds of situations:
Situation one, Coal Mining Power Distribution System load dynamic analog, detailed process is:
Step 101, Guan Bi threephase switch K1, threephase switch K3 and threephase switch K7, open threephase switch K4, threephase switch K5 and Threephase switch K6, dynamic analog Coal Mining Power Distribution System is in hot stand-by duty；
Step 102, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and three-phase Switch K7, dynamic analog Coal Mining Power Distribution System is in no-load running state；
Step 103, regulate the output torque of magnetic powder brake (3) from small to large, the start-up course of dynamic analog mining equipment；
Step 104, it is nominal torque by the output torque adjustment of magnetic powder brake (3), at dynamic analog Coal Mining Power Distribution System In full-load run state, and dynamic analog Coal Mining Power Distribution System is in normal operating condition；
Situation two, Coal Mining Power Distribution System method of operation dynamic analog, detailed process is:
Step 201, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and three-phase Switch K7；
Step 202, Guan Bi single-phase switch K2, zero-sequence reactor ARC access dynamic simulator system, and dynamic analog colliery is for power distribution system Unite near transformator equipped with the method for operation of zero-sequence reactor, i.e. the neutral point compensation of ground method of operation；
Step 203, opening single-phase switch K2, zero-sequence reactor ARC exits dynamic simulator system, and dynamic analog colliery is for power distribution system Unite near transformator without the method for operation of zero-sequence reactor, i.e. the neutral point insulation method of operation；
Situation three, Coal Mining Power Distribution System leak current fault dynamic analog, detailed process is:
Step 301, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and three-phase Switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 302, by any one terminals in the outfan OUT1 and binding post a～c of gradually changeable leakage analog circuit Son connects, slowly regulation slide rheostat R16, the single-phase earth leakage event of dynamic analog high voltage supply circuit head end generation gradually changeable Barrier；The outfan OUT1 of gradually changeable leakage analog circuit is connected with any two binding post in binding post a～c simultaneously Connect, slowly regulation slide rheostat R16, the asymmetric leak current fault of dynamic analog high voltage supply circuit head end generation gradually changeable； The outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with binding post a～c, slowly regulation slide rheostat R16, The symmetry leak current fault of dynamic analog high voltage supply circuit head end generation gradually changeable；
Step 303, by any one terminals in the outfan OUT1 and binding post d～f of gradually changeable leakage analog circuit Son connects, slowly regulation slide rheostat R16, the single-phase earth leakage event of dynamic analog high voltage supply line end generation gradually changeable Barrier；The outfan OUT1 of gradually changeable leakage analog circuit is connected with any two binding post in binding post d～f simultaneously Connect, slowly regulation slide rheostat R16, the asymmetric leak current fault of dynamic analog high voltage supply line end generation gradually changeable； The outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with binding post d～f, slowly regulation slide rheostat R16, The symmetry leak current fault of dynamic analog high voltage supply line end generation gradually changeable；
Step 304, by any one terminals in the outfan OUT1 and binding post g～o of gradually changeable leakage analog circuit Son connects, slowly regulation slide rheostat R16, the list of dynamic analog difference low voltage feeder branch road (2-2) head end generation gradually changeable Phase leak current fault；By any two terminals in the outfan OUT1 and binding post g～i of gradually changeable leakage analog circuit Son or with any two binding post in binding post j～l or with any two binding post in binding post m～o Being simultaneously connected with, slowly regulation slide rheostat R16, there is same circuit in dynamic analog difference low voltage feeder branch road (2-2) head end The asymmetric leak current fault of gradually changeable；By any with binding post g～i of the outfan OUT1 of gradually changeable leakage analog circuit Any one binding post in one binding post and binding post j～l is simultaneously connected with, or by gradually changeable leakage analog electricity The outfan OUT1 on road connects with any one binding post in binding post g～i and any one in binding post m～o Line terminals is simultaneously connected with, or by any one in the outfan OUT1 and binding post j～l of gradually changeable leakage analog circuit Any one binding post in binding post and binding post m～o is simultaneously connected with, slowly regulation slide rheostat R16, dynamically There is the asymmetric leak current fault of different circuit gradually changeable in different low voltage feeder branch road (2-2) head end of simulation；Gradually changeable is leaked electricity The outfan OUT1 and binding post g～i of analog circuit be simultaneously connected with or be simultaneously connected with binding post j～l or with Binding post m～o is simultaneously connected with, the symmetrical electric leakage event of dynamic analog difference low voltage feeder branch road (2-2) head end generation gradually changeable Barrier；
Step 305, by any one terminals in the outfan OUT1 and binding post p～x of gradually changeable leakage analog circuit Son connects, slowly regulation slide rheostat R16, the list of dynamic analog difference low voltage feeder branch road (2-2) end generation gradually changeable Phase leak current fault；By any two in the outfan OUT1 and binding post p～r of gradually changeable leakage analog circuit, terminals Any two in sub-s～u or any two in binding post v～x are simultaneously connected with, slowly regulation slide rheostat R16, dynamic Morphotype is intended different low voltage feeder branch road (2-2) end and the asymmetric leak current fault of same circuit gradually changeable is occurred；Gradually changeable is leaked Any one in any one and binding post s～u in the outfan OUT1 and binding post p～r of electrical analogue circuit with Time connect, or by any one in the outfan OUT1 and binding post p～r of gradually changeable leakage analog circuit and terminals Any one in sub-v～x is simultaneously connected with, or by the outfan OUT1 and binding post s～u of gradually changeable leakage analog circuit In any one and binding post v～x in any one be simultaneously connected with, slowly regulation slide rheostat R16, dynamic analog There is the asymmetric leak current fault of different circuit gradually changeable in different low voltage feeder branch road (2-2) ends；By gradually changeable leakage analog The outfan OUT1 and binding post p～r of circuit be simultaneously connected with or with binding post s～u or with binding post v～x It is simultaneously connected with, the symmetrical leak current fault of dynamic analog difference low voltage feeder branch road (2-2) end generation gradually changeable；
Situation four, Coal Mining Power Distribution System singlephase earth fault dynamic analog, detailed process is:
Step 401, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and three-phase Switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 402, by described short circuit analog circuit the first outfan OUT2 and binding post a～c in any one wiring Terminal connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, and dynamic analog high voltage supply circuit is first End generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slowly regulates Slide rheostat R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog high voltage supply circuit head end；Or Second outfan OUT3 of described short circuit analog circuit is connected by person with any one binding post in binding post a～c, closes Closing single-phase switch K11 and single-phase switch K13, open single-phase switch K14, the generation of dynamic analog high voltage supply circuit head end is single-phase directly Connect earth fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, slowly regulates slide rheostat R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog high voltage supply circuit head end；Or by described short 3rd outfan OUT4 of road analog circuit is connected with any one binding post in binding post a～c, closes single-phase switch K12 and single-phase switch K13, opens single-phase switch K14, and the generation of dynamic analog high voltage supply circuit head end is single-phase is directly grounded event Barrier；Guan Bi single-phase switch K12 and single-phase switch K14, opens single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog Intend high voltage supply circuit head end and the single-phase earth fault through different resistance transition resistances occurs；
Step 403, by described short circuit analog circuit the first outfan OUT2 and binding post d～f in any one wiring Terminal connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, dynamic analog high voltage supply circuit end End generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slowly regulates Slide rheostat R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog high voltage supply line end；Or Second outfan OUT3 of described short circuit analog circuit is connected by person with any one binding post in binding post d～f, closes Closing single-phase switch K11 and single-phase switch K13, open single-phase switch K14, the generation of dynamic analog high voltage supply line end is single-phase directly Connect earth fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, slowly regulates slide rheostat R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog high voltage supply line end；Or by described short 3rd outfan OUT4 of road analog circuit is connected with any one binding post in binding post d～f, closes single-phase switch K12 and single-phase switch K13, the generation of dynamic analog high voltage supply line end is single-phase is directly grounded fault；Guan Bi single-phase switch K12 With single-phase switch K14, open single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog high voltage supply line end There is the single-phase earth fault through different resistance transition resistances；
Step 404, by described short circuit analog circuit the first outfan OUT2 and binding post g～o in any one wiring Terminal connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, dynamic analog low voltage feeder branch road (2- 2) head end generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slowly Regulation slide rheostat R17, there is single-phase connecing through different resistance transition resistance in dynamic analog low voltage feeder branch road (2-2) head end Earth fault；Or by any one terminals in the second outfan OUT3 and binding post g～o of described short circuit analog circuit Son connects, and closes single-phase switch K11 and single-phase switch K13, opens single-phase switch K14, dynamic analog low voltage feeder branch road (2-2) Head end generation is single-phase is directly grounded fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, slowly adjusts Joint slide rheostat R17, there is the single-phase ground connection through different resistance transition resistances in dynamic analog low voltage feeder branch road (2-2) head end Fault；Or by any one binding post in the 3rd outfan OUT4 and binding post g～o of described short circuit analog circuit Connecting, close single-phase switch K12 and single-phase switch K13, open single-phase switch K14, dynamic analog low voltage feeder branch road (2-2) is first End generation is single-phase is directly grounded fault；Guan Bi single-phase switch K12 and single-phase switch K14, opens single-phase switch K13, slowly regulates Slide rheostat R17, there is the single-phase ground connection event through different resistance transition resistances in dynamic analog low voltage feeder branch road (2-2) head end Barrier；
Step 405, by described short circuit analog circuit the first outfan OUT2 and binding post p～x in any one wiring Terminal connects, and closes single-phase switch K10 and single-phase switch K13, opens single-phase switch K14, dynamic analog low voltage feeder branch road (2- 2) end generation is single-phase is directly grounded fault；Guan Bi single-phase switch K10 and single-phase switch K14, opens single-phase switch K13, slowly Regulation slide rheostat R17, there is single-phase connecing through different resistance transition resistance in dynamic analog low voltage feeder branch road (2-2) end Earth fault；Or by any one terminals in the second outfan OUT3 and binding post p～x of described short circuit analog circuit Son connects, and closes single-phase switch K11 and single-phase switch K13, opens single-phase switch K14, dynamic analog low voltage feeder branch road (2-2) End generation is single-phase is directly grounded fault；Guan Bi single-phase switch K11 and single-phase switch K14, opens single-phase switch K13, slowly adjusts Joint slide rheostat R17, there is the single-phase ground connection through different resistance transition resistances in dynamic analog low voltage feeder branch road (2-2) end Fault；Or by any one binding post in the 3rd outfan OUT4 and binding post p～x of described short circuit analog circuit Connect, close single-phase switch K12 and single-phase switch K13, open single-phase switch K14, dynamic analog low voltage feeder branch road (2-2) end End generation is single-phase is directly grounded fault；Guan Bi single-phase switch K12 and single-phase switch K14, opens single-phase switch K13, slowly regulates Slide rheostat R17, there is the single-phase ground connection event through different resistance transition resistances in dynamic analog low voltage feeder branch road (2-2) end Barrier；
Situation five, Coal Mining Power Distribution System short trouble dynamic analog, detailed process is:
Step 501, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and three-phase Switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 502, by described short circuit analog circuit the first outfan OUT2, short circuit analog circuit the second outfan OUT3 and Any two outfan in 3rd outfan OUT4 of short circuit analog circuit and any two wiring in binding post a～c Terminal connects respectively, outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and binding post Two connected, open single-phase switch K13 and single-phase switch K14, and the generation of dynamic analog high voltage supply circuit head end is asymmetric directly Connect short trouble；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 is with binding post even Two connect, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog high voltage supply circuit head end occurs asymmetric Ground short circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and binding post Two connected, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulation slide rheostat R17, and dynamic analog is high There is the asymmetric ground short circuit fault through different resistance transition resistances in pressure supply line head end；
Step 503, by described short circuit analog circuit the first outfan OUT2, short circuit analog circuit the second outfan OUT3 and Any two outfan in 3rd outfan OUT4 of short circuit analog circuit and any two wiring in binding post d～f Terminal connects respectively, outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and binding post Two connected, open single-phase switch K13 and single-phase switch K14, and the generation of dynamic analog high voltage supply line end is asymmetric directly Connect short trouble；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 is with binding post even Two connect, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog high voltage supply line end occurs asymmetric Ground short circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and binding post Two connected, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulation slide rheostat R17, and dynamic analog is high There is the asymmetric ground short circuit fault through different resistance transition resistances in pressure supply line end；
Step 504, by described short circuit analog circuit the first outfan OUT2, short circuit analog circuit the second outfan OUT3 and Any two outfan in 3rd outfan OUT4 of short circuit analog circuit and any two wiring in binding post g～i Terminal or with any two binding post in binding post j～l or with any two terminals in binding post m～o Son connects respectively, and outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 is with binding post even Two connect, open single-phase switch K13 and single-phase switch K14, and dynamic analog low voltage feeder branch road (2-2) head end occurs asymmetric Direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and binding post Two connected, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog low voltage feeder branch road (2-2) head end occurs Asymmetric ground short circuit fault；Close outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connect Two of line terminals connection, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulation slide rheostat R17, dynamically There is the asymmetric ground short circuit fault through different resistance transition resistances in simulation low voltage feeder branch road (2-2) head end；
Step 505, by described short circuit analog circuit the first outfan OUT2, short circuit analog circuit the second outfan OUT3 and Any two outfan in 3rd outfan OUT4 of short circuit analog circuit and any two wiring in binding post p～r Terminal or with any two binding post in binding post s～u or with any two terminals in binding post v～x Son connects respectively, and outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 is with binding post even Two connect, open single-phase switch K13 and single-phase switch K14, and dynamic analog low voltage feeder branch road (2-2) end occurs asymmetric Direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and binding post Two connected, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog low voltage feeder branch road (2-2) end occurs Asymmetric ground short circuit fault；Close outfan corresponding in single-phase switch K10, single-phase switch K11 and single-phase switch K12 and connect Two of line terminals connection, Guan Bi single-phase switch K14 also opens single-phase switch K13, slowly regulation slide rheostat R17, dynamically There is the asymmetric ground short circuit fault through different resistance transition resistances in simulation low voltage feeder branch road (2-2) end；
Step 506, by described short circuit analog circuit the first outfan OUT2, short circuit analog circuit the second outfan OUT3 and 3rd outfan OUT4 of short circuit analog circuit is connected with binding post a～c respectively, closes single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K13, open single-phase switch K14, and dynamic analog high voltage supply circuit head end occurs symmetry Metallic short circuit fault；Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open single-phase Switch K13, slowly regulation slide rheostat R17, dynamic analog high voltage supply circuit head end occurs through different resistance transition resistances Symmetry short trouble；
Step 507, by described short circuit analog circuit the first outfan OUT2, short circuit analog circuit the second outfan OUT3 and 3rd outfan OUT4 of short circuit analog circuit is connected with binding post d～f respectively, closes single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K13, open single-phase switch K14, and dynamic analog high voltage supply line end occurs symmetry Metallic short circuit fault；Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open single-phase Switch K13, slowly regulation slide rheostat R17, dynamic analog high voltage supply line end occurs through different resistance transition resistances Symmetry short trouble；
Step 508, by described short circuit analog circuit the first outfan OUT2, short circuit analog circuit the second outfan OUT3 and Short circuit analog circuit the 3rd outfan OUT4 respectively with binding post g～i or respectively with binding post j～l or respectively with Binding post m～o connects, Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K13, opens list Switch K14, dynamic analog low voltage feeder branch road (2-2) head end generation symmetric metal short trouble mutually；Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open single-phase switch K13, slowly regulate slide rheostat R17, there is the symmetry short trouble through different resistance transition resistances in dynamic analog low voltage feeder branch road (2-2) head end；
Step 509, by described short circuit analog circuit the first outfan OUT2, short circuit analog circuit the second outfan OUT3 and Short circuit analog circuit the 3rd outfan OUT4 respectively with binding post p～r or respectively with binding post s～u or respectively with Binding post v～x connects, Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K13, opens list Switch K14, dynamic analog low voltage feeder branch road (2-2) end generation symmetric metal short trouble mutually；Guan Bi single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K14, open single-phase switch K13, slowly regulate slide rheostat R17, there is the symmetry short trouble through different resistance transition resistances in dynamic analog low voltage feeder branch road (2-2) end.
2. according to the Coal Mining Power Distribution System Dynamic Simulation Method described in claim 1, it is characterised in that the method also include with The simulation of lower three kinds of situations:
Situation six, Coal Mining Power Distribution System earth leakage protective performance dynamic analog, detailed process is:
Step 601, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and three-phase Switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 602, by the secondary side winding of zero sequence current mutual inductor CT2, the secondary side winding of zero sequence current mutual inductor CT3 and zero The secondary side winding of sequence Current Transmit 4, and the secondary side winding of voltage transformer pt 2 be all connected to be tested mining combine Close protector；
Step 603, by any one terminals in the outfan OUT1 and binding post g～i of gradually changeable leakage analog circuit Son connects, slowly regulation slide rheostat R16, the single-phase earth leakage of dynamic analog the first low voltage feeder branch road head end generation gradually changeable Fault；Or the outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with any two in binding post g～i, Slowly regulation slide rheostat R16, there is the asymmetric of same circuit gradually changeable in dynamic analog the first low voltage feeder branch road head end Leak current fault；Or the outfan OUT1 of gradually changeable leakage analog circuit is simultaneously connected with binding post g～i, dynamic analog The symmetrical leak current fault of different low voltage feeder branch road (2-2) head end generation gradually changeables；
Step 604, check the action situation of switch and judge mining comprehensive protector to be tested earth leakage protective selection performance: when Threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining comprehensively The earth leakage protective horizontal selection of protector is functional；When threephase switch K4 does not change closure state, threephase switch K5 or three-phase When switch K6 opens, it is judged that bad for the earth leakage protective horizontal selection performance of mining comprehensive protector to be tested；Work as threephase switch K4 does not change closure state, when threephase switch K3 opens, it is judged that for the earth leakage protective longitudinally choosing of mining comprehensive protector to be tested Select performance bad；
Step 605, by any one terminals in the outfan OUT1 and binding post p～r of gradually changeable leakage analog circuit Son connects, the resistance of regulation slide rheostat R16 to maximum, and dynamic analog the first low voltage feeder branch road end occurs single-phase leakage Electric fault；Or the outfan OUT1 of gradually changeable leakage analog circuit is connected with any two in binding post p～r simultaneously Connecing, the resistance of regulation slide rheostat R16 to maximum, there is same circuit not in dynamic analog the first low voltage feeder branch road end Symmetrical leak current fault；
Step 606, check the action situation of switch and judge the earth leakage protective sensitive performance of mining comprehensive protector to be tested: when Threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining comprehensively Protector is earth leakage protective sensitive functional；When threephase switch K4, threephase switch K5 and threephase switch K6 the most do not change Guan Bi During state, it is judged that bad for the earth leakage protective sensitive performance of mining comprehensive protector to be tested；
Situation seven, Coal Mining Power Distribution System short-circuit protection performance dynamic analog, detailed process is:
Step 701, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and three-phase Switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 702, by the secondary side winding of single-phase current transformer CT5, the secondary side winding of single-phase current transformer CT6, list The secondary side winding of phase current mutual inductor CT7, the secondary side winding of single-phase current transformer CT8, single-phase current transformer CT9 Secondary side winding, the secondary side winding of single-phase current transformer CT10, the secondary side winding of single-phase current transformer CT11, single-phase The secondary side winding of Current Transmit 12 and the secondary side winding of single-phase current transformer CT13, and voltage transformer pt 2 Secondary side winding be all connected to mining comprehensive protector to be tested；
Step 703, by described short circuit analog circuit the first outfan OUT2, short circuit analog circuit the second outfan OUT3 and Any two outfan in 3rd outfan OUT4 of short circuit analog circuit and any two wiring in binding post p～r Terminal connects respectively, outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and binding post Two connected, open single-phase switch K13 and single-phase switch K14, and it is the most right that dynamic analog the first low voltage feeder branch road end occurs Claim direct short-circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 and terminals Two of son connection, Guan Bi single-phase switch K13 also opens single-phase switch K14, and dynamic analog the first low voltage feeder branch road end is sent out Raw asymmetric ground short circuit fault；Outfan corresponding in Guan Bi single-phase switch K10, single-phase switch K11 and single-phase switch K12 with Two of binding post connection, Guan Bi single-phase switch K14 also opens single-phase switch K13, and slowly regulation slide rheostat R17 is dynamic Morphotype is intended the first low voltage feeder branch road end and the asymmetric ground short circuit fault through different resistance transition resistances is occurred；
Step 704, check the action situation of switch and judge the selection performance of short-circuit protection of mining comprehensive protector to be tested With sensitive performance: when threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for treating Laterally selecting of test mining comprehensive protector short-circuit protection is functional；When threephase switch K4 does not change closure state, three-phase When switch K5 or threephase switch K6 opens, it is judged that horizontal for mining comprehensive protector short-circuit protection to be tested selects performance not Good；When threephase switch K4 does not change closure state, and threephase switch K3 opens, it is judged that for mining comprehensive protector to be tested short circuit The longitudinal direction of protection selects performance bad；When threephase switch K4, threephase switch K5 and threephase switch K6 do not change closure state, It is judged as that the sensitive performance of mining comprehensive protector short-circuit protection to be tested is bad；
Step 705, by described short circuit analog circuit the first outfan OUT2, short circuit analog circuit the second outfan OUT3 and 3rd outfan OUT4 of short circuit analog circuit is connected with binding post g～i respectively, closes single-phase switch K10, single-phase switch K11, single-phase switch K12 and single-phase switch K13, open single-phase switch K14, and dynamic analog the first low voltage feeder branch road head end occurs Symmetric metal short trouble；
Step 706, check the action situation of switch and judge the short-circuit protection unfailing performance of mining comprehensive protector to be tested: when Threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining comprehensively The unfailing performance of protector short-circuit protection is good；When threephase switch K4 does not change closure state, threephase switch K5 or threephase switch When K6 opens, or when threephase switch K4, threephase switch K5 and threephase switch K6 do not change closure state, it is judged that for be tested The unfailing performance of mining comprehensive protector short-circuit protection is bad；
Situation eight, Coal Mining Power Distribution System one-phase ground protection dynamic analog, detailed process is:
Step 801, Guan Bi threephase switch K1, threephase switch K3, threephase switch K4, threephase switch K5, threephase switch K6 and three-phase Switch K7；Close single-phase switch K2 or open single-phase switch K2；
Step 802, by the secondary side winding of zero sequence current mutual inductor CT2, the secondary side winding of zero sequence current mutual inductor CT3 and zero The secondary side winding of sequence Current Transmit 4, and the secondary side winding of voltage transformer pt 2 be all connected to be tested mining combine Close protector；
Step 803, by described short circuit analog circuit the first outfan OUT2 and binding post g～i in any one wiring Terminal connects, and closes single-phase switch K10 and single-phase switch K13, and the generation of dynamic analog the first low voltage feeder branch road head end is single-phase directly Connect earth fault, close single-phase switch K10 and single-phase switch K14, open single-phase switch K13, slowly regulate slide rheostat R17, there is the single-phase earth fault through different resistance transition resistances in dynamic analog the first low voltage feeder branch road head end；Or by institute The the second outfan OUT3 stating short circuit analog circuit is connected with any one binding post in binding post g～i, closes single-phase Switch K11 and single-phase switch K13, there is the single-phase fault that is directly grounded in dynamic analog the first low voltage feeder branch road head end, Guan Bi is single Switch K11 and single-phase switch K14, opens single-phase switch K13 mutually, slowly regulation slide rheostat R17, dynamic analog the first low pressure There is the single-phase earth fault through different resistance transition resistances in feed leg head end；Or the 3rd by described short circuit analog circuit Outfan OUT4 is connected with any one binding post in binding post g～i, Guan Bi single-phase switch K12 and single-phase switch K13, there is the single-phase fault that is directly grounded in dynamic analog the first low voltage feeder branch road head end, Guan Bi single-phase switch K12 and single-phase open Closing K14, open single-phase switch K13, slowly regulation slide rheostat R17, dynamic analog the first low voltage feeder branch road head end occurs The single-phase earth fault through different resistance transition resistances；
Step 804, check the action situation of switch and judge the one-phase ground protection performance of mining comprehensive protector to be tested: when Threephase switch K4 opens, when threephase switch K5 and threephase switch K6 does not changes closure state, it is judged that for be tested mining comprehensively Laterally selecting of protector one-phase ground protection is functional；When threephase switch K4 does not change closure state, threephase switch K5 or When threephase switch K6 opens, it is judged that the laterally selection performance for mining comprehensive protector one-phase ground protection to be tested is bad；When Threephase switch K4 does not change closure state, when threephase switch K3 opens, it is judged that for mining comprehensive protector single-phase earthing to be tested The longitudinal direction of protection selects performance bad.
3. according to the Coal Mining Power Distribution System Dynamic Simulation Method described in claim 1, it is characterised in that: described A phase high pressure supplies Electric wire routing resistance R1, electric capacity C1 and inductance L1 composition, one end of described inductance L1 is connected with one end of electric capacity C1 and high for A phase The head end of pressure supply line, one end of described resistance R1 is connected and is the end of A phase high voltage supply circuit with one end of inductance L1, The other end of described electric capacity C1 and the equal ground connection of the other end of resistance R1；Described B phase high voltage supply line routing resistance R2, electric capacity C2 and Inductance L2 forms, and one end of described inductance L2 is connected and is the head end of B phase high voltage supply circuit, described electricity with one end of electric capacity C2 One end of resistance R2 is connected and is the end of B phase high voltage supply circuit, the other end of described electric capacity C2 and electricity with one end of inductance L2 The equal ground connection of the other end of resistance R2；Described C phase high voltage supply line routing resistance R3, electric capacity C3 and inductance L3 composition, described inductance L3 One end be connected with one end of electric capacity C3 and for the head end of C phase high voltage supply circuit, one end of described resistance R3 is with inductance L3's One end connects and is the end of C phase high voltage supply circuit, the other end of described electric capacity C3 and the equal ground connection of the other end of resistance R3.
4. according to the Coal Mining Power Distribution System Dynamic Simulation Method described in claim 1, it is characterised in that: described first low pressure feedback Electricity route the oneth U phase low voltage feeder branch road, a V phase low voltage feeder branch road and W phase low voltage feeder branch road composition, described Oneth U phase low voltage feeder props up routing resistance R4, electric capacity C4 and inductance L4 composition, one end of described inductance L4 and one end of electric capacity C4 Connecting and be the head end of a U phase low voltage feeder branch road, one end of described resistance R4 is connected with one end of inductance L4 and is a U The end of phase low voltage feeder branch road, the other end of described electric capacity C4 and the equal ground connection of the other end of resistance R4, a described V phase low pressure Feed leg is made up of resistance R5, electric capacity C5 and inductance L5, and one end of described inductance L5 is connected with one end of electric capacity C5 and is The head end of one V phase low voltage feeder branch road, one end of described resistance R5 is connected with one end of inductance L5 and is a V phase low voltage feeder The end of branch road, the other end of described electric capacity C5 and the equal ground connection of the other end of resistance R5, a described W phase low voltage feeder props up route Resistance R6, electric capacity C6 and inductance L6 composition, one end of described inductance L6 is connected with one end of electric capacity C6 and is a W phase low pressure feedback The head end of electricity branch road, one end of described resistance R6 is connected and is the end of a W phase low voltage feeder branch road with one end of inductance L6, The other end of described electric capacity C6 and the equal ground connection of the other end of resistance R6；Described second low voltage feeder props up route the 2nd U phase low pressure feedback Electricity branch road, the 2nd V phase low voltage feeder branch road and the 2nd W phase low voltage feeder branch road composition, described 2nd U phase low voltage feeder props up route Resistance R7, electric capacity C7 and inductance L7 composition, one end of described inductance L7 is connected with one end of electric capacity C7 and is the 2nd U phase low pressure feedback The head end of electricity branch road, one end of described resistance R7 is connected and is the end of the 2nd U phase low voltage feeder branch road with one end of inductance L7, The other end of described electric capacity C7 and the equal ground connection of the other end of resistance R7, described 2nd V phase low voltage feeder props up routing resistance R8, electric capacity C8 and inductance L8 composition, one end of described inductance L8 is connected and is the head of the 2nd V phase low voltage feeder branch road with one end of electric capacity C8 End, one end of described resistance R8 is connected and is the end of the 2nd V phase low voltage feeder branch road, described electric capacity C8 with one end of inductance L8 The other end and the equal ground connection of the other end of resistance R8, described 2nd W phase low voltage feeder props up routing resistance R9, electric capacity C9 and inductance L9 Composition, one end of described inductance L9 is connected and is the head end of the 2nd W phase low voltage feeder branch road, described resistance with one end of electric capacity C9 One end of R9 is connected and is the end of the 2nd W phase low voltage feeder branch road with one end of inductance L9, the other end of described electric capacity C9 and The equal ground connection of the other end of resistance R9；Described 3rd low voltage feeder props up route the 3rd U phase low voltage feeder branch road, the 3rd V phase low pressure feedback Electricity branch road and the 3rd W phase low voltage feeder branch road composition, described 3rd U phase low voltage feeder props up routing resistance R10, electric capacity C10 and electricity Sense L10 composition, one end of described inductance L10 is connected and is the head end of the 3rd U phase low voltage feeder branch road with one end of electric capacity C10, One end of described resistance R10 is connected and is the end of the 3rd U phase low voltage feeder branch road, described electric capacity C10 with one end of inductance L10 The other end and the equal ground connection of the other end of resistance R10, described 3rd V phase low voltage feeder props up routing resistance R11, electric capacity C11 and electricity Sense L11 composition, one end of described inductance L11 is connected and is the head end of the 3rd V phase low voltage feeder branch road with one end of electric capacity C11, One end of described resistance R11 is connected and is the end of the 3rd V phase low voltage feeder branch road, described electric capacity C11 with one end of inductance L11 The other end and the equal ground connection of the other end of resistance R11, described 3rd W phase low voltage feeder props up routing resistance R12, electric capacity C12 and electricity Sense L12 composition, one end of described inductance L12 is connected and is the head end of the 3rd W phase low voltage feeder branch road with one end of electric capacity C12, One end of described resistance R12 is connected and is the end of the 3rd W phase low voltage feeder branch road, described electric capacity C12 with one end of inductance L12 The other end and the equal ground connection of the other end of resistance R12.
5. according to the Coal Mining Power Distribution System Dynamic Simulation Method described in claim 1, it is characterised in that: described slide rheostat The maximum value of R16 is 5000 Ω, and change in resistance scope is 1000 Ω～5000 Ω；The maximum resistance of described slide rheostat R17 Value is 500 Ω.
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