CN104793109B - Turn-adjusting arc-extinguishing winding simulation system and method - Google Patents

Turn-adjusting arc-extinguishing winding simulation system and method Download PDF

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Publication number
CN104793109B
CN104793109B CN201510254150.XA CN201510254150A CN104793109B CN 104793109 B CN104793109 B CN 104793109B CN 201510254150 A CN201510254150 A CN 201510254150A CN 104793109 B CN104793109 B CN 104793109B
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gear
relay
simulation
module
arc
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CN104793109A (en
Inventor
于鑫
胡玉涛
梅素真
李君明
回嵩杉
王宇
司丹凤
汪健
李洋
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State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
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Abstract

The present invention relates to a kind of turn-adjusting arc-extinguishing winding simulation system and method.Include the arc suppression coil gear analog module of gradable adjustment inductance value, carrying out corresponding arc suppression coil gear according to the gear selection signal of input and output analog module is adjusted, and the inductance value for selecting gear is exported to power distribution network simulation system;Input and output analog module, there is the simulation for carrying the regulation hard contact of the switch position closing of contact and feeding back hard contact for receiving turn-adjusting arc-extinguishing winding, the gear control command that loaded switch logic simulation module is sent is received, and the order is forwarded to arc suppression coil gear analog module;Loaded switch logic simulation module, has the work-based logic for carrying regulation switching motor for simulating, and when being connected to the lifting order that input and output analog module is transferred, and the input and output analog module returned to contact sends gear control command.Advantages of the present invention effect:Transient process when earth fault occurs provides necessary research technique with analysis, while can verify that capacitance current measurement precision, the automatic tracking and compensating function of the arc suppression coil automatic tracking and compensating controller at the scene of will putting into operation.

Description

Turn-adjusting arc-extinguishing winding simulation system and method
Technical field
A kind of transient state analogue technique the present invention relates to distribution network arc suppression coil automatic tracking and compensating and when being grounded, More particularly to a kind of turn-adjusting arc-extinguishing winding simulation system and method.
Background technology
Power distribution network is in the end of electric network composition, region be directly facing various users, huge number has a very wide distribution, Easily influenceed to trigger various failures by oneself factor inside power network and extraneous natural environment;Wherein, occurs singlephase earth fault Probability highest, can account for 80% of total failare or so.Related code regulation, when single-phase earthing occurs for 22~66KV power networks, ground connection The zero sequence capacitance current of point is more than 10A, and 10KV power network zero sequences capacitance current is more than 20A, and 3~6KV power network zero sequence capacitance currents are big When 30A, arc suppression coil should be installed without exception, to reduce earth current, made the easy blow-out of system, reduced the harm of overvoltage, prevent Only fault spread.But, power distribution network ground connection zero-sequence current reduces so that correctly work faces bigger choose to ground connection diagnostic device War.A large amount of with automatic tracking type arc suppression coil are put into operation, and diagnostic techniques is absorbed in low ebb, and many area diagnostic devices are exited Rate reaches more than 90%, and the diagnostic method that original manual outgoing one by one draws road is returned to again, and this has absolutely proved that ground connection is examined Disconnected the complex nature of the problem and arduousness.
The diagnosis problem of research institution of China and exploitation unit always to single-phase grounded malfunction in grounded system of low current is carried out Research, it is proposed that a variety of diagnostic methods, wherein transient analysis method obtain more accreditation;Transient analysis method is both from distribution Transient process when earth fault occurs, which is set out, analyzes the feature of searching earth fault, will be grounded the circuit occurred with not connecing The circuit of earth fault makes a distinction;And the research method of transient analysis is except Digital Simulation, another relatively effectively, intuitively side Method is to build physical simulation system, and physical analogy is carried out in proportion to the equipment in main distribution, element.
The content of the invention
In order to solve the above-mentioned technical problem the present invention provides a kind of turn-adjusting arc-extinguishing winding simulation system and method, and purpose is The tracking of automatic tuning state, ground connection event before the arc-extinguishing coil automatic tuning process of physical analogy distribution, and earth fault generation Transient process when barrier occurs provides necessary research technique with analysis.
To reach disappearing for above-mentioned purpose, turn-adjusting arc-extinguishing winding simulation system of the present invention, including gradable adjustment inductance value Arc coil gear analog module, for the specific outlet according to power distribution network simulation system and the distribution situation of capacitance size, it is determined that Numerical value per one-level inductance, it is ensured that when the input of each outlet and system capacitive current caused by exiting change, according to open into The gear selection signal for outputing analog module carries out corresponding arc suppression coil gear adjustment, exports and selects to power distribution network simulation system The inductance value of gear;
Input and output analog module, has the load regulation hard contact of the switch position closing of contact for receiving turn-adjusting arc-extinguishing winding Simulation with feeding back hard contact, receives the gear control command that loaded switch logic simulation module is sent, and to arc suppression coil shelves Position analog module forwards the order;
Loaded switch logic simulation module, has the work-based logic for carrying regulation switching motor for simulating, and is opened when being connected into opening When going out the lifting order that analog module is transferred, the gear of arc suppression coil can be correctly adjusted, and to opening of returning of contact into opening Go out analog module and send gear control command.
Arc suppression coil gear analog module, simulates six grades of arc suppression coils, is divided into six grades of inductance values, the 6th grade of induction reactance value is most Small, first order induction reactance value is maximum;Every grade of arc suppression coil receives the gear selection signal of input and output analog module respectively.
Input and output analog module includes first to the 8th relay, and the 7th relay and the 8th relay, which are received, to be come from Arc suppression coil automatic tracking and compensating controller send drop control signal, rise control signal power supply, respectively control the 7th relay and The actuating coil of 8th relay, order of transferring the files downwards, upward upshift command respectively be transmitted to load and opened by normal opened contact Close the drop controlling switch of logic simulation module and rise controlling switch, the first relay to the 6th relay is patrolled with loaded switch respectively Collect the first to the 6th pin connection of analog module, a contact of first relay into the 6th relay gear selection signal It is connected respectively with every grade of arc suppression coil of arc suppression coil gear analog module, another of the first relay to the 6th relay connects Point is connected with tested new arc suppression coil control system.
The analogy method of turn-adjusting arc-extinguishing winding simulated implementation system, input and output analog module receives tested extinguishing arc The signal that coil automatic tracking and compensating controller is sent, the 7th relay or the work of the 8th relay of input and output analog module Make coil, order will be transferred the files downwards by normal opened contact or upward upshift command is transmitted to loaded switch logic simulation module, had Load switch logic simulation module sends gear control command to input and output analog module, and one of signal is set to high electricity Flat, the first relay to the 6th relay of input and output analog module causes a contact in gear selection signal, And arc suppression coil gear analog module is issued, while so that the first relay makes to another contact of the 6th relay A connection in 6 gear positions signals is obtained, new arc suppression coil control system is issued.
Arc suppression coil gear analog module calculates the inductance value of corresponding arc suppression coil according to gear selection signal is received, Totally six grades of inductance values, the 6th grade of induction reactance value is minimum, and first order induction reactance value is maximum;Wherein the inductance induction reactance value of level V, sets mould The reactance value of total capacitance when all circuits of plan system are run, i.e.,:
W*LL5=1/W/( C1+C2+C3+C4+C5+C6)
Wherein W is electric angle frequency, and LL5 is the numerical value of fifth speed inductance;
The inductance induction reactance value of the second level, is set as a minimum line capacitance of simulation system capacitance current(C4)Capacitive reactance Value, i.e.,
W*LL2=1/W/C04
Wherein W is electric angle frequency, and LL2 is the numerical value of second gear inductance;
The inductance value of other grades, is determined by arithmetic progression, it is ensured that the integrality of whole simulation system resonance curve, i.e.,:
LL2=LL5+3*K;
K=( LL2-LL5)/3
Wherein, K is the tolerance of arithmetic progression
1st, 3,4,6 grades inductance value LL1, LL3, LL4, LL6 be set to:
LL1=LL2+K;
LL3=LL2-K;
LL4=LL2-2*K;
LL6=LL5-K。
Loaded switch logic simulation module receives input and output analog module and sent after gear control command, and gear is become Amount Jia one or subtracts one;After the intrinsic action delay 4 seconds of loaded switch, according to the numerical value of the variable, control is corresponding defeated Go out pin, and then control corresponding gear relay, realize the lifting simulation control of arc suppression coil gear.
Advantages of the present invention effect:The present invention gives distribution visual plant turn-adjusting arc-extinguishing winding and its have load regulation open The physical simulating method of pass, is the arc-extinguishing coil automatic tuning process of physical analogy distribution, and earth fault occur before it is automatic Transient process when tuning state tracking, earth fault occur provides necessary research technique with analysis, can verify that simultaneously The capacitance current measurement precision of the arc suppression coil automatic tracking and compensating controller at the scene of will putting into operation, distribution network systems method of operation hair Ability of tracking and compensation effect during changing.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention;
Fig. 2 is arc suppression coil gear analog module structural representation of the present invention;
Fig. 3 is present invention simulation power distribution network schematic diagram;
Fig. 4 is that the present invention is outputed into analog module structured flowchart;
Fig. 5 is the schematic diagram of loaded switch logic simulation module of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings, to further appreciate that the purpose, scheme and effect of the present invention, But institute's accompanying drawings and embodiment explanation are not intended to limit the scope of the present invention.
Turn-adjusting arc-extinguishing winding simulation system of the present invention as shown in Figure 1, includes the arc suppression coil of gradable adjustment inductance value Gear analog module 10, for the specific outlet according to power distribution network simulation system and the distribution situation of capacitance size, is determined each The numerical value of level inductance, it is ensured that when the input of each outlet changes with exiting caused system capacitive current, according to input and output The gear selection signal of analog module 20 carries out corresponding arc suppression coil gear adjustment, to power distribution network simulation system output selection shelves The inductance value of position;
Input and output analog module 20, has the load regulation switch position closing of contact to connect firmly for receiving turn-adjusting arc-extinguishing winding Point and the simulation for feeding back hard contact, the gear control command that reception loaded switch logic simulation module 30 is sent, and to arc blowout wire Enclose gear analog module 10 and forward the order;
Loaded switch logic simulation module 30, for simulate have carry regulation switching motor work-based logic, when be connected to open into When outputing the lifting order that analog module 20 is transferred, the gear of arc suppression coil can be correctly adjusted, and to opening that contact is returned Enter to output analog module 20 and send gear control command.
Arc suppression coil gear analog module 10, simulates six grades of arc suppression coils, is divided into six grades of electricity as Figure 2-3
Inductance value, the 6th grade of induction reactance value is minimum, and first order induction reactance value is maximum;Every grade of arc suppression coil receives input and output mould respectively Intend the gear selection signal of module.Gear selection signal DWXZ1, DWXZ2, DWXZ3, DWXZ4, DWXZ5, DWXZ6 from open into Output analog module 20;LL1, LL2, LL3, LL4, LL5, LL6 are respectively 1,2,3,4,5,6 grades of inductance.
Selected distribution network has 6 outlets shown in Fig. 3, is individually identified as L1, L2, L3, L4, L5, L6;Wherein L is extinguishing arc Coil equivalent inductance, C1、C2、C3 、C4、C5、C6Respectively the 1st article, the 2nd article, the 3rd article, the 4th article, the 5th article, the 6th article outlet Three-phase total capacitance, it is assumed that C4For minimum value therein, R1、R2、R3、R4、R5、R6For its bleeder resistance.
Input and output analog module 20 as shown in Figure 4 includes first to the 8th relay, the 7th relay 9JDQ7 and the Eight relay 9JDQ8, which are received, to be sent drop control signal from arc suppression coil automatic tracking and compensating controller, rises control signal power supply, The 7th relay 9JDQ7 and the 8th relay 9JDQ8 actuating coil is controlled respectively, will be transferred the files downwards by normal opened contact respectively Order, upward upshift command are transmitted to the drop control JKZ pins of loaded switch logic simulation module 30 and rise control SKZ pins, First relay to the 6th relay 9JDQ1,9JDQ2,9JDQ3,9JDQ4,9JDQ5,9JDQ6 respectively with loaded switch logic The first of analog module 30 is to the 6th pin KZ1, KZ2, KZ3, KZ4, KZ5, KZ6 connections, the first relay to the 6th relay A contact and arc suppression coil gear mould in gear selection signal DWXZ1, DWXZ2, DWXZ3, DWXZ4, DWXZ5, DWXZ6 Intend module every grade of arc suppression coil connect respectively, the first relay to the DWWZ1 of the 6th relay, DWWZ2, DWWZ3, DWWZ4, The contact of another in DWWZ5, DWWZ6 is connected with new arc suppression coil control system.
The analogy method of turn-adjusting arc-extinguishing winding simulated implementation system, it is automatic that input and output analog module receives arc suppression coil The signal that tracing compensation controller is sent, the 7th relay or the actuating coil of the 8th relay of input and output analog module, Order will be transferred the files downwards by normal opened contact or upward upshift command is transmitted to loaded switch logic simulation module, loaded switch is patrolled Volume analog module sends gear control command to input and output analog module, and one of signal is set to high level, open into The first relay of analog module is outputed to the 6th relay so that a contact in gear selection signal, and issues and disappears Arc coil gear analog module, while so that another contact of the first relay to the 6th relay so that 6 gears A connection in position signalling, issues new arc suppression coil control system.
Arc suppression coil gear analog module calculates the inductance value of corresponding arc suppression coil according to gear selection signal is received, Totally six grades of inductance values, the 6th grade of induction reactance value is minimum, and first order induction reactance value is maximum;Wherein the inductance induction reactance value of level V, sets mould The reactance value of total capacitance when all circuits of plan system are run, i.e.,:
W*LL5=1/W/( C1+C2+C3+C4+C5+C6)
Wherein W is electric angle frequency, and LL5 is the numerical value of fifth speed inductance;
The inductance induction reactance value of the second level, is set as a minimum line capacitance of simulation system capacitance current(C4)Capacitive reactance Value, i.e.,
W*LL2=1/W/C4
Wherein W is electric angle frequency, and LL2 is the numerical value of second gear inductance;
The inductance value of other grades, is determined by arithmetic progression, it is ensured that the integrality of whole simulation system resonance curve, i.e.,:
LL2=LL5+3*K;
K=( LL2-LL5)/3
Wherein, K is the tolerance of arithmetic progression
1st, 3,4,6 grades inductance value LL1, LL3, LL4, LL6 be set to:
LL1=LL2+K;
LL3=LL2-K;
LL4=LL2-2*K;
LL6=LL5-K。
Loaded switch logic simulation module receives input and output analog module and sent after gear control command, sets gear Variable, rises pulse control signal, the variable adds one whenever receiving one;Whenever receiving a control signal for subtracting pulse, the change Amount subtracts one;After the intrinsic action delay 4 seconds of loaded switch, according to the numerical value of the variable, corresponding efferent duct is controlled Pin, and then corresponding gear relay is controlled, realize the lifting simulation control of arc suppression coil gear.
Although the present invention is disclosed above with preferred embodiment, so it is not limited to the present invention, without departing substantially from this hair It is bright spirit and its essence in the case of, those skilled in the art when can be made according to the present invention it is various it is corresponding change and Deformation, but these corresponding changes and deformation should all belong to the protection domain of appended claims of the invention.

Claims (5)

1. turn-adjusting arc-extinguishing winding simulation system, it is characterised in that include the arc suppression coil gear simulation of gradable adjustment inductance value Module, carries out corresponding arc suppression coil gear according to the gear selection signal of input and output analog module and adjusts, to power distribution network mould The inductance value of plan system output selection gear;
Input and output analog module, has the load regulation hard contact of the switch position closing of contact and anti-for receiving turn-adjusting arc-extinguishing winding Present the simulation of hard contact, receive the gear control command that loaded switch logic simulation module is sent, and to arc suppression coil gear mould The order of plan module forwards;
Loaded switch logic simulation module, has the work-based logic for carrying regulation switching motor, when being connected to input and output mould for simulating When intending the lifting order that module is transferred, the gear of arc suppression coil, and the input and output mould returned to contact can be correctly adjusted Intend module and send gear control command;
Input and output analog module includes first to the 8th relay, and the 7th relay and the 8th relay, which are received, carrys out self-extinction of arc Coil automatic tracking and compensating controller sends drop control signal, rises control signal power supply, and the 7th relay and the 8th is controlled respectively The actuating coil of relay, order of transferring the files downwards, upward upshift command respectively be transmitted to loaded switch and patrolled by normal opened contact The drop controlling switch of volume analog module and rise controlling switch, the first relay to the 6th relay respectively with loaded switch logic mould Intend the first to the 6th pin connection of module, a contact of first relay into the 6th relay gear selection signal is with disappearing Every grade of arc suppression coil of arc coil gear analog module is connected respectively, another contact of the first relay to the 6th relay with New arc suppression coil control system is connected.
2. turn-adjusting arc-extinguishing winding simulation system according to claim 1, it is characterised in that arc suppression coil gear simulates mould Block, simulates six grades of arc suppression coils, is divided into six grades of inductance values, and the 6th grade of induction reactance value is minimum, and first order induction reactance value is maximum;Every grade of extinguishing arc Coil receives the gear selection signal of input and output analog module respectively.
3. the analogy method of turn-adjusting arc-extinguishing winding simulation system according to claim 1, it is characterised in that input and output Analog module receives the signal that arc suppression coil automatic tracking and compensating controller is sent, the 7th relay of input and output analog module Or the 8th relay actuating coil, order will be transferred the files downwards by normal opened contact or upward upshift command is transmitted to loaded switch Logic simulation module, loaded switch logic simulation module sends gear control command, therein one to input and output analog module Individual signal is set to high level, and the first relay to the 6th relay of input and output analog module causes in gear selection signal A contact, and issue arc suppression coil gear analog module, while so that the first relay to the 6th relay it is another One contact a so that connection in 6 gear positions signals, issues new arc suppression coil control system.
4. the analogy method of turn-adjusting arc-extinguishing winding simulation system according to claim 3, it is characterised in that arc suppression coil Gear analog module calculates the inductance value of corresponding arc suppression coil, totally six grades of inductance values, the 6th according to gear selection signal is received Level induction reactance value is minimum, and first order induction reactance value is maximum;Wherein the inductance induction reactance value of level V, sets all circuits operations of simulation system When total capacitance capacitor value, W*LL5=1/W/ (C1+C2+C3+C4+C5+C6), wherein W is electric angle frequency, and LL5 is fifth speed electricity The numerical value of sense;
The inductance induction reactance value of the second level, is set as a minimum line capacitance C of simulation system capacitance current4Capacitor value, W* LL2=1/W/C4, wherein W is electric angle frequency, and LL2 is the numerical value of second gear inductance;
The inductance value of other grades, is determined by arithmetic progression, it is ensured that the integrality of whole simulation system resonance curve, LL2=LL5+ 3*K, K=(LL2-LL5)/3, wherein, K is the tolerance of arithmetic progression;
1st, 3,4,6 grades inductance value LL1, LL3, LL4, LL6 be set to:
LL1=LL2+K;
LL3=LL2-K;
LL4=LL2-2*K;
LL6=LL5-K。
5. the analogy method of turn-adjusting arc-extinguishing winding simulation system according to claim 3, it is characterised in that loaded switch Logic simulation module receives input and output analog module and sent after gear control command, adds one by gear variable or subtracts one; After the intrinsic action delay 4 seconds of loaded switch, according to the numerical value of the variable, corresponding output pin is controlled, and then control Corresponding gear relay, realizes the lifting simulation control of arc suppression coil gear.
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CN107831378B (en) * 2017-09-13 2020-06-30 梅素真 Device and method for detecting compensation effect of arc suppression coil
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