CN202487384U - Magnetic valve type controllable reactor - Google Patents
Magnetic valve type controllable reactor Download PDFInfo
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- CN202487384U CN202487384U CN 201220108828 CN201220108828U CN202487384U CN 202487384 U CN202487384 U CN 202487384U CN 201220108828 CN201220108828 CN 201220108828 CN 201220108828 U CN201220108828 U CN 201220108828U CN 202487384 U CN202487384 U CN 202487384U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/30—Reactive power compensation
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Abstract
The utility model discloses a magnetic valve type controllable reactor. The magnetic valve type controllable reactor comprises an outer insulating cylinder, wherein the upper end of the outer insulating cylinder is provided with an upper end cover part, and the lower end of the outer insulating cylinder is connected with a lower end cover part; the upper end cover part comprises a reactor high voltage terminal and an upper end cover; the lower end cover part comprises a reactor low voltage terminal, a pulse control line terminal and a lower end cover; the inner surface of the lower end cover is fixedly provided with a reactor main body; a reactor main winding is connected with the reactor high voltage terminal and the reactor low voltage terminal respectively; the upper end of a reactor iron core is provided with an insulating support; the insulating support is provided with a thyristor component and a pulse transformer; the thyristor component is connected with the pulse transformer; and the pulse transformer is connected with the pulse control line terminal. The magnetic valve type controllable reactor has the advantages that: the magnetic valve type controllable reactor has simple manufacturing process, low cost, low loss, small harmonic waves and wide voltage application range and has greater application potential for improving power transmission capacity of power grids, regulating the voltage of the power grids, compensating reactive power and limiting over-voltage.
Description
Technical field
The utility model relates to a kind of reactor, relates in particular to a kind of magnetic valve type controllable reactor.
Background technology
SVC (Static Var Compensator-SVC) is the one type of fast reactive adjusting device that grows up the external seventies, successfully is applied in the compensation of loads such as electric railway, metallurgy, electric power, mining and high energy acclerator.This type device has remarkable advantages at the aspects such as economy of reliability, investment and the operating cost of the rapidity of regulating, function diversity, work than synchronous compensator; Can obtain technical economic benefit preferably, thereby obtain development faster at home and abroad.
The SVC of main flow mainly contains three types: thyristor switchable capacitor (Thyristor Switched Capacitor; Be called for short TSC); Thyristor-controlled reactor (Thyristor Controlled Reactor; Be called for short TCR), magnet controlled reactor (Magnetic valve Controllable Reactor is called for short MCR).
TSC control is simple, and cost is lower, and does not have harmonic current, and the low-voltage load end that is adapted at electrical network disperses reactive power compensation.But can only the grouping switching capacitor, can not regulate reactive power continuously.
TCR can the smooth adjustment capacity and response speed very fast, (obtained extensive application in 6～35KV) the reactive power compensation at the medium voltage electricity circuit.But TCR triggers the phase angle through the control thyristor to come directly control reactor output current; The output current distortion is very serious, and the waveform indention is a very big harmonic source; Must move simultaneously with filtering capacitor group (Filter Capacitor is called for short FC).A large amount of uses of TCR can cause the decline significantly of the quality of power supply, and bring new threat for the safe operation of electrical network.In addition, thyristor and reactor are under the same voltage in the TCR system, have limited its application on 110kV and above electric pressure electrical network.
MCR is by the magnetic saturation of the excitatory change iron core of control loop DC control electric current (being the working point), thereby reaches the purpose of the idle output of smooth adjustment.The version of MCR has a variety of, and characteristic difference is also bigger.In recent years research shows, it is two kinds of magnetic valve type and iron core split types that application prospect MCR type is arranged most.Compare with TCR, the voltage that the control thyristor of MCR is born has only about 2% of rated voltage, and its electric current is also only required specified Control current, and the electric current and voltage of major loop will partly be born by reactor.This can make MCR be applied to any electric pressure, has avoided by the voltage of thyristor and capacity and the variety of issue that brings.And the harmonic performance of MCR output current is better than TCR, helps the safe and highly efficient operation of electrical network.The manufacturing of MCR is simple, and the design of magnet valve makes that the efficient of MCR has obtained significantly improving in addition, and noise reduces significantly.Consider that from economy MCR is simple in structure, low price, floor space is little.Based on above-mentioned various advantages, the trend of using MCR to substitute TCR is arranged all in a lot of fields.
Research trends and existing problems.
MCR is the operating experience in existing more than 20 year abroad, has the MCR of the 35～500kV of cover more than 50 electric pressure in the engineering of Russia, member country of the Commonwealth of Independent States and Brazil, to use.Russia had developed 500kV, 180Mvar three-phase magnet controlled reactor in 2005.Owing to recognize the advantage of MCR in the high-power field, European many countries also begin MCR is carried out deep research.
At home, early 1990s has been carried out the research of this respect, has successfully worked out the magnetic valve type compensation arrangement and the arc suppression coil that are applied to power distribution network, and in a plurality of electric railways Traction Station, puts into operation.Colleges and universities have also launched the research of this respect, and have obtained bigger progress.Relevant unit and producer study and produce as a trial superhigh pressure MCR and superhigh pressure high-impedance transformer formula controlled reactor (Transformer Type Controlled Shunt Reactor is called for short TCSR).
In April, 2006, relevant unit and producer unite exploitation and the application study of carrying out 110 kilovolts of controlled reactors.In April, 2007, to develop 110 kilovolts of MCR of domestic first platform, and passed through delivery test and relevant type approval test, in June, the completion Installation and Debugging also put into operation successfully.MCR model machine (iron core split type) by the 500kV three-phase 40Mvar of producer development in 2006 is through shop test, transports in April, 2007 on-the-spot and trys out.
Because MCR is applied in the technology that belongs to newer in the world, still belongs to theory stage or trial run stage at home, deeply not launch on a large scale as yet, many ins and outs do not relate to.Cause that technical that is that all right is ripe.Be in particular in:
1, existing reactor adopts the irony fuel tank, and leakage field is bigger during operation,, the fuel tank tank wall can produce eddy current loss, must add magnetic screen at tank wall in case of necessity, causes the fuel tank volume to become big.
2, secondly, existing reactor cabling on cable rack adopts outlet column, and the irony fuel tank need adopt the bushing of 2 72kV, and the fuel tank height increases like this.Field intensity is uneven presses, and causes partial discharge easily.
3, when operation be because the existence of leakage field, at the bottom of the case of irony fuel tank, there is superheating phenomenon in case lid.
4, the installation of thyristor is arranged on the reactor outside usually, and the reactor volume is bigger, and place and insulation are all proposed higher and many requirements, also increases installation workload simultaneously.
5, reactor analytical work in theory is more in the reality, and that really puts into practice is less, and particularly high pressure or ultra high voltage field and field that insulation is had higher requirements exist more blank.
6, the many employings of existing reactor control optical-fibre communications in actual use, requires height to operating personnel, and institute's wiring is complicated, causes maintaining difficult.
7, adopt the irony fuel tank, can not stack during dilatation, cascade is used.Particularly under the condition of limited of fabricating yard.
The utility model content
The purpose of the utility model is for overcoming the deficiency of above-mentioned prior art, a kind of magnetic valve type controllable reactor is provided, and it has reasonable in design, and is reliable, high-performance, the advantage that cost is low.
For realizing above-mentioned purpose, the utility model adopts following technical proposals:
A kind of magnetic valve type controllable reactor, it comprises the external insulation tube, said external insulation tube upper end is provided with the upper end cover part; The lower end partly is connected with bottom end cover, and upper end cover partly comprises reactor HV Terminal and upper end cover, and bottom end cover partly comprises the reactor low-voltage terminal; Pulse control line terminal and bottom end cover; On the bottom end cover inner surface, be fixed with the reactor main body, said reactor main body comprises core of reactor, and said core of reactor is provided with the reactor main winding; Said reactor main winding is connected with reactor HV Terminal, reactor low-voltage terminal respectively; Said core of reactor upper end is provided with insulating support, and insulating support is provided with thyristor assembly and pulse transformer, and said thyristor assembly is connected with pulse transformer; Pulse transformer is connected with pulse control line terminal, said pulse transformer flow direction and reactor main winding flow direction quadrature; Effectively avoid electromagnetic interference each other, be marked with insulating oil in the said external insulation tube.
Said upper end cover partly comprises upper end cover, upper flange and the temperature rise buffer air bag that is provided with from top to bottom; Said bottom end cover partly comprises lower flange that is connected with external insulation tube lower end and the bottom end cover that is connected with lower flange, and the bottom of said bottom end cover also is provided with insulator foot; Said reactor low-voltage terminal is located on the lower flange;
Be provided with the high-voltage connection sleeve pipe in said reactor HV Terminal, reactor low-voltage terminal and the internal electrical antibody main body connection line; The withstand voltage 115kV of HV Terminal lead-in wire induction of said reactor HV Terminal, low-voltage terminal lead-in wire industrial frequency withstand voltage 45kV; Said external insulation tube, upper end cover, upper flange, bottom end cover, lower flange scribble epoxy resin varnish.
Said reactor main body is a self-excitation type DC power supply excitation control mode; Core of reactor is provided with and is used for the horizontal yoke of iron core that direct current flux flows; The core of reactor upper end is provided with insulating support; Said high-voltage connection sleeve pipe is located on the insulating support, is provided with the iron core positioning component that is fixedly connected with lower flange and bottom end cover in the core of reactor lower end; Said iron core positioning component comprises the electrical laminated wood through angle bar that is fixedly connected with insulator foot and the bolt clamping that on angle bar, is provided with.
Said core of reactor is two, and said reactor main winding comprises two main coils that independently are wound on respectively on two iron cores, and each main coil is divided into 4 sections, and every section is layered structure; Connect through horizontal yoke between two iron core two ends.
Also be provided with in the said reactor main winding and be used for the outer excitation DC field winding of low pressure; Said insulating support comprises the fixedly electrical laminated wood of thyristor assembly; The lamination akebi crosses the bolt folder and is fixedly connected with two iron core upper ends; The pulse control line of the pulse transformer that is connected with thyristor assembly control end is provided with clamping wood part, and the pulse control line is connected with the pulse control line terminal that draw the bottom.
Said external insulation tube is the epoxy fibreglass winding cylinder, and insulator foot is the epoxy fibreglass base of height 500mm.
Said upper end cover edge is provided with the venthole that connects inside and outside of reactor; Said venthole duct and upper end cover horizontal plane are-3 °～-5 ° angles; Said venthole duct is embedded with nonmetal bend pipe.
Said reactor HV Terminal and/or reactor low-voltage terminal are the outlet conducting rod, and said outlet conducting rod one end is an outlet conducting rod bolt, and the other end is an outlet conducting rod fixed part; Outlet conducting rod fixed part diameter is greater than the outlet conducting rod diameter of bolt; It is nut that said outlet conducting rod bolt end is provided with both sides; Be provided with the clamp structure that disk spring, flat shim combine between the nut; On the screw rod between clamp structure and the outlet conducting rod fixed part, be provided with nut, flat shim and square-section seal washer, said outlet conducting rod fixed part is provided with blind hole; Blind hole and outlet conducting rod are coaxial, are provided with internal thread in the said blind hole; Said conducting rod ramp is provided with screw rod, and said screw rod and stiff end blind hole internal thread are connected.
The said conducting rod diameter of bolt is identical with the blind hole diameter that fixed part is provided with; Said conducting rod bolt is identical with the blind threaded pitch of stiff end.
Said square-section seal washer is an oil resistant rubber; Said outlet conducting rod and conducting rod ramp are that red copper is zinc-plated.
This magnetic valve type controllable reactor be single-phase or with magnetic valve type controllable reactor through being combined into three-phase; Because profile is an insulating cylinder; Conduction outlet bar is arranged on the side of upper and lower end cap; Therefore can stack and aggregate erection, this is limited in the space, place, and electric power facilities such as the demanding transformer and distribution power station of electric insulation are laid the place and accomplished something difficult and so deserve praise.The utility model is through regulating the triggered time of thyristor, and adjustment rectification direct current size is controlled saturation unshakable in one's determination, thereby reached the purpose of regulating reactance unshakable in one's determination and output capacity.
The external insulation tube adopts the epoxy fibreglass winding cylinder, and base is the epoxy fibreglass base of height 500mm.
Thyristor is fixed on the electrical laminated wood of insulating support, and electrical laminated wood is fixedly connected with the iron core upper end through the bolt folder, and thyristor and body are in state of insulation like this, guarantee the reliability service of thyristor.The pulse control line of the pulse transformer that is connected with the thyristor control end is provided with clamping wood part, and the pulse control line is connected with the pulse control line terminal that draw the bottom.Thyristor is placed in the oil, its insulation against ground distance shrinkage.
The built-in electrical insulation structural design:
The utility model capacity is little, and electric pressure is high, so the number of turn of coil is many, in order to dwindle the volume of the utility model.Coil is divided into 4 sections, and every section is designed for laminar.Dwindled the volume of device body so greatly, and the turn-to-turn field intensity is low.Cause partial discharge easily.
The operation principle of magnetic valve type controllable reactor:
Magnetic valve type controllable reactor is a kind of in the magnet controlled reactor, and the notion of " magnet valve " is that The former Russian scholar proposed in 1986.Generally; It comprises every four column iron core structures that are provided with mutually; Be respectively equipped with at least one small bore section on work iron core column I4 and the II in the middle of the said four column iron core structures; The coil C, the D that are wound with equal turn numbers up and down at least respectively symmetrically of the loop A 1 that is wound with equal turn numbers up and down at least respectively symmetrically of said work iron core column I4, B, said work iron core column II5, said loop A 1, B, C, the D number of turn all equate; Described loop A 1, B, C, D are respectively equipped with centre cap a, b, c, d; Described centre cap a, b are connected with negative electrode with the thyristor anode respectively; Described centre cap c, d are connected with anode with the thyristor negative electrode respectively; With electrical network line parallel mutually, cross-over connection has fly-wheel diode between the interconnection end points side of said loop A 1 and C or B and the D interconnection end points side after loop A 1 and D, B and the C interconnection, and said fly-wheel diode anode is positioned at loop A 1 or B and intersects on the end points side.
Said four column iron cores adopt high magnetic conduction cold-reduced silicon sheet.
Said fly-wheel diode to thyristor K1, K2 afterflow, helps the shutoff of thyristor K1, K2, and said thyristor K1, K2 are used to change the size of Control current, thereby changes the magnetic saturation of magnet valve iron core, realizes regulating smoothly the capacity of controlled reactor.
Magnetic valve type controllable reactor has one or more snippets small bore iron core, in the entire capacity adjustable range, has only the small bore core sataration, and all the other sections all are in the unsaturation linear condition, changes the capacity of reactor through the degree of saturation that changes small bore iron leg core.It promptly changes the size of DC excitation electric current based on the adjustable principle of magnetic bias through the trigger angle that changes thyristor, and then changes the degree of saturation of iron core, reaches the idle purpose of smooth adjustment.The deficiency that the outer excitation DC field winding of low pressure can remedy inner excitation realizes that hybrid mode provides direct current flux.
The utility model beneficial effect is:
The magnetic valve type controllable reactor manufacturing process is simple, and cost is low, and loss is little, and harmonic wave is little, and the voltage scope of application is wide, for the ability to transmit electricity that improves electrical network, adjustment line voltage, compensating power and over-voltage bigger application potential is arranged all.
With respect to rectangle irony oil tank of transformer, the utility model overall dimension is little, attractive in appearance, convenient transportation.Thyristor is built in the reactor external insulation tube, simplifies the wiring flow process, compact overall structure, implementation is good.
The utility model overcomes the irony fuel tank, and the fuel tank tank wall can produce eddy current loss, and leakage field is bigger during reactor operation simultaneously, needs in case of necessity to add magnetic screen at tank wall, causes the fuel tank volume can become big deficiency.
Secondly, the utility model overcomes the technical problem that the irony fuel tank adopts the bushing fuel tank height increase of 2 72kV.
The utility model adopts the epoxy fibreglass fuel tank, and cabling on cable rack adopts the conducting rod outlet, because profile is an insulating cylinder; Conduction outlet bar is arranged on the side of upper and lower end cap; Therefore can stack and aggregate erection, this is limited in the space, place, and electric power facilities such as the demanding transformer and distribution power station of electric insulation are laid the place and accomplished something difficult and so deserve praise; The utility model field intensity is all pressed simultaneously, effectively avoids causing partial discharge.Can be not overheated at the bottom of the utility model fuel tank case with case lid.Avoid in the irony fuel tank, because the existence of leakage field, case under casing lid can be overheated.
Insulator foot of the increase of the utility model is avoided discharging over the ground.
Description of drawings
Fig. 1 a is the structural representation of single-phase MCR;
Fig. 1 b is the principle schematic of single-phase MCR;
Fig. 2 is a magnetic valve type controllable reactor mechanical structure sketch map;
The schematic equivalent circuit of MCR when Fig. 3 A. is the K1 conducting;
The schematic equivalent circuit of MCR when Fig. 3 B. is the K2 conducting;
The magnetic circuit sketch map of Fig. 4 A magnetic valve type controllable reactor;
Fig. 4 B magnetic valve type controllable reactor magnetic circuit isoboles;
Fig. 5 A magnetic valve type controllable reactor is closed lower magnetic force line distribution schematic diagram fully at magnet valve;
Fig. 5 B magnetic valve type controllable reactor is opened lower magnetic force line distribution schematic diagram fully at magnet valve;
Fig. 5 C magnetic valve type controllable reactor is partly closed lower magnetic force line distribution schematic diagram at magnet valve;
Fig. 6 is a MCR Working state analysis emulation sketch map;
Fig. 7 is a MCR operating state simulation result sketch map;
Fig. 8 is magnetic valve type controllable reactor operating state conversion sketch map;
Fig. 9 is a reactor conductive lever structural representation.
Among the figure: 1. loop A, 2. fly-wheel diode, 3. thyristor K1,4. iron core column I, 5. iron core column II, 6. reactor HV Terminal; 7. fluid sealant, 8. high-voltage connection sleeve pipe, 9. thyristor assembly, 10. insulating oil, 11. lower flanges, 12. bottom end covers; 13. the reactor low-voltage terminal, 14. insulator foots, 15. upper flanges, 16. upper end covers, 17. temperature rise buffer air bags, 18. pulse transformers; 19. insulating support, 20. core of reactor, 21. reactor main windings, 22. external insulation tubes, the outer excitation DC field winding of 23. low pressure, 24. iron core positioning components; 25. pulse control line terminal, 26 ventholes, 27. nuts, 28. disk springs, 29. flat shims; 30. the square-section seal washer, 31. outlet conducting rod fixed parts, 32. conducting rod ramps, 33. screw rods, 34. outlet conducting rod bolts.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Figure 1A is the structure chart of single-phase MCR; Figure 1B is the principle schematic of single-phase MCR;
The said magnetic valve type controllable reactor of the utility model is no return yoke structure, constitutes two core structure controlled reactors, contrasts existing single-phase magnetic valve type controllable reactor; Often shown in Figure 1A, be provided with return yoke and constitute four column iron core structures, the utility model core structure is a double-iron core, and portion adopts the return yoke of both sides; Has only the horizontal yoke that connects two iron core column; Double-iron core is arranged, and nature all is wound with coil in each iron core column shown in Figure 1A and 1B, constitute two main coils; Be respectively equipped with at least one small bore section on said iron core column I4 and the II; The coil C, the D that are wound with equal turn numbers up and down at least respectively symmetrically of the loop A 11 that is wound with equal turn numbers up and down respectively symmetrically of said iron core column I 4, B, said work iron core column II5, said loop A 1, B, C, the D number of turn all equate; Described loop A 1, B, C, D are respectively equipped with centre cap a, b, c, d; Described centre cap a, b are connected with negative electrode with the thyristor anode respectively; Described centre cap c, d are connected with anode with the thyristor negative electrode respectively; With electrical network line parallel mutually, cross-over connection has fly-wheel diode 2 between the interconnection end points side of said loop A 1 and C or B and the D interconnection end points side after loop A 1 and D, B and the C interconnection, and said fly-wheel diode 2 anodes are positioned at loop A 1 or B and intersect on the end points side.
Adopt high magnetic conduction cold-reduced silicon sheet the same as four column iron cores.The said fly-wheel diode 2 of the utility model thyristor K13, K2 afterflow are done; Help the shutoff of thyristor K13, K2; Said thyristor K13, K2 are used to change the size of Control current, thereby change the magnetic saturation of magnet valve iron core, realize regulating smoothly the capacity of controlled reactor.
Fig. 2 is expressed as magnetic valve type controllable reactor mechanical structure sketch map
A kind of magnetic valve type controllable reactor, it comprises the external insulation tube, said external insulation tube 22 upper ends are provided with the upper end cover part; The lower end partly is connected with bottom end cover, and upper end cover partly comprises reactor HV Terminal 6 and upper end cover 16, and bottom end cover partly comprises reactor low-voltage terminal 13; Pulse control line terminal 25 and bottom end cover 12; On bottom end cover 12 inner surfaces, be fixed with the reactor main body, said reactor main body comprises core of reactor, and said core of reactor is provided with reactor main winding (21); Said reactor main winding 21 is connected with reactor HV Terminal 6, reactor low-voltage terminal 13 respectively; Said core of reactor upper end is provided with insulating support 19, and insulating support 19 is provided with thyristor assembly 9 and pulse transformer 18, and said thyristor assembly 9 is connected with pulse transformer 18; Pulse transformer 18 is connected with pulse control line terminal 25, said pulse transformer 18 flow directions and reactor main winding 21 flow direction quadratures; Be marked with insulating oil 10 in the said external insulation tube 22.
Said upper end cover partly comprises upper end cover 16, upper flange 15 and the temperature rise buffer air bag 17 that is provided with from top to bottom; Said bottom end cover partly comprises lower flange 11 that is connected with external insulation tube 22 lower ends and the bottom end cover 12 that is connected with lower flange 11, and the bottom of said bottom end cover also is provided with insulator foot 14; Said reactor low-voltage terminal 13 is located on the lower flange 11;
Be provided with high-voltage connection sleeve pipe 8 in said reactor HV Terminal 6, reactor low-voltage terminal 13 and the internal electrical antibody main body connection line; Said reactor HV Terminal 6 can externally be provided with fluid sealant 7 except that the square-section seal washer 30 of self, the withstand voltage 115kV of HV Terminal lead-in wire induction of said reactor HV Terminal 6, low-voltage terminal lead-in wire industrial frequency withstand voltage 45kV; Said external insulation tube 22, upper end cover 16, upper flange 15, bottom end cover 12, lower flange 11 scribble epoxy resin varnish.
Said reactor main body is a self-excitation type DC power supply excitation control mode; Core of reactor is provided with and is used for the horizontal yoke of iron core that direct current flux flows; The core of reactor upper end is provided with insulating support 19; Said high-voltage connection sleeve pipe 8 is located on the insulating support 19, is provided with the iron core positioning component 24 that is fixedly connected with lower flange 11 and bottom end cover 12 in core of reactor 20 lower ends; Said iron core positioning component 24 comprises the electrical laminated wood through angle bar that is fixedly connected with insulator foot 14 and the bolt clamping that on angle bar, is provided with.
Said core of reactor is two, and said reactor main winding 21 comprises two main coils that independently are wound on respectively on two iron cores, and each main coil is divided into 4 sections, and every section is layered structure; Connect through horizontal yoke between two iron core two ends.
Also be provided with in the said reactor main winding and be used for the outer excitation DC field winding 23 of low pressure.Said insulating support 19 comprises the fixedly electrical laminated wood of thyristor assembly 9; The lamination akebi crosses the bolt folder and is fixedly connected with two iron core upper ends; The pulse control line of the pulse transformer 18 that is connected with thyristor assembly 9 control ends is provided with clamping wood part, and the pulse control line is connected with the pulse control line terminal 25 that draw the bottom.
Said external insulation tube 22 is the epoxy fibreglass winding cylinder, and insulator foot 14 is the epoxy fibreglass base of height 500mm.Said upper end cover 16 edges are provided with the venthole 26 that connects inside and outside of reactor; 3 °～-5 ° angles of said venthole 26 ducts and upper end cover horizontal plane.Said venthole 26 ducts are embedded with nonmetal bend pipe.
Said reactor HV Terminal 6 and/or reactor low-voltage terminal 13 are the outlet conducting rod, and said outlet conducting rod one end is an outlet conducting rod bolt 34, and the other end is an outlet conducting rod fixed part 31; Outlet conducting rod fixed part 31 diameters are greater than outlet conducting rod bolt 34 diameters; It is nut 27 that said outlet conducting rod bolt 34 ends are provided with both sides; Be provided with the clamp structure that disk spring 28, flat shim 29 combine between the nut 27, on the screw rod between clamp structure and the outlet conducting rod fixed part, be provided with nut 27, flat shim 29 and square-section seal washer 30.
Said outlet conducting rod fixed part 31 is provided with blind hole; Blind hole and outlet conducting rod are coaxial, are provided with internal thread in the said blind hole; Said conducting rod ramp 32 is provided with screw rod 33, and said screw rod 33 is connected with the stiff end blind hole internal thread.
Said conducting rod bolt 34 diameters are identical with the blind hole diameter that fixed part is provided with; Said conducting rod bolt 34 is identical with the blind threaded pitch of stiff end.
Said square-section seal washer is an oil resistant rubber; Said outlet conducting rod and conducting rod ramp 32 are that red copper is zinc-plated.
It is 0-720kVar that the utility model is exported perceptual idle scope, and according to end low-voltage terminal lead-in wire industrial frequency withstand voltage 15kV (industrial frequency withstand voltage 45kV), head end is high-pressure side lead-in wire voltage 72kV (responding to withstand voltage 115kV) design during design.The wherein terminal output that connects excitation transformer, head end connects the oil immersed type air core reactor.The pulse-triggered shielded type cable; Be convenient to outdoor wiring; The thyristor assembly comprises and two thyristors and the thyristor gating circuit that is connected respectively with their gate pole that the iron core positioning component comprises the electrical laminated wood with the angle bar clamping, and the bolt on the said angle bar is fixedly connected with base.
The schematic equivalent circuit of MCR when Fig. 3 A. Fig. 3 B is K1, K2 conducting, the schematic equivalent circuit of MCR during the K1 conducting; U1=(1-δ) Esin ω t, u2=δ Esin ω t, u3=u1+u2=Esin ω t.If thyristor K13, not conducting of K2 know that by the symmetry of winding construction controlled reactor and unloaded transformer are as good as.When e is in positive half cycle, thyristor K13 bears forward voltage, and K2 bears reverse voltage.If the K1 triggering and conducting, then make a, b point equipotential after power supply e is coil (N/2) the self coupling transformation of δ through no-load voltage ratio, is that the coil of N2 provides direct-current control voltage 2u2 and current i 1, i2 to circuit by the number of turn.Equivalent circuit diagram in the time of can drawing the K1 conducting thus is shown in Fig. 3 A.In like manner, if K2 then can draw the equivalent circuit diagram shown in Fig. 3 B in the negative half period conducting (c, d equipotential) of power supply.
The Control current direction of the Control current direction that is produced during the K2 conducting during with the K1 conducting is identical; That is to say in power frequency period of power supply; The conducting in turn of K1, K2 has played the full-wave rectification effect; Afterflow effect by diode D helps the shutoff of thyristor K13, K2, has improved rectification efficiency.Through changing the triggering and conducting angle of thyristor K13, K2, with the size change of Control current i1 and i2 among Fig. 3 A, Fig. 3 B, the magnetic saturation of magnet valve iron core changes thereupon, reaches the purpose of the capacity of regulating controlled reactor smoothly.
The magnetic circuit sketch map and the isoboles of Fig. 4 A, Fig. 4 B magnetic valve type controllable reactor; Fig. 4 A is a magnetic valve type controllable reactor magnetic circuit sketch map; (area is Ab1 to iron core by the bigger part of area (area is Ab, and length is l, is called " large tracts of land core packet " below) and the smaller part of area; Length is lt, is called " magnet valve core packet " below) be in series.
In the entire capacity adjustable range of magnetic valve type controllable reactor; The operating state of large tracts of land core packet is in the unsaturation linear zone of magnetic circuit all the time, and its magnetic resistance is very little with respect to the magnet valve core packet, and the magnet valve part magnetic line of force is divided into two parts; A part is through the magnet valve iron core; Magnetic resistance is designated as Rt, and another part is through air gap, and equivalent magnetic resistance is designated as Rq.The magnetic valve type controllable reactor magnetic circuit can equivalence be Fig. 4 B, and among the figure, F is the magnetic circuit magnetic potential, and Φ is the magnetic circuit total magnetic flux,
(μ
0Be air permeability),
(μ is the average magnetic permeability of magnet valve iron core).
Fig. 5 A, Fig. 5 B, Fig. 5 C are that magnetic valve type controllable reactor is at different operating state lower magnetic force line distribution schematic diagram.We can see from figure, and magnet valve has three kinds of operating states:
(1) shown in Fig. 5 A, complete when saturated when the magnet valve core packet, the average magnetic permeability of magnet valve iron core is minimum, and magnetic resistance is maximum, and the magnet valve door is closed fully, and this moment, whole magnetic circuit can equivalence be A for area
b, length is l
tThe air gap;
(2) shown in Fig. 5 B, when the magnet valve core packet was in the unsaturation linear zone, the average magnetic permeability of magnet valve iron core was maximum, and magnetic resistance is very little, and the magnetic line of force can therefrom pass through fully, and the magnet valve door is opened fully;
(3) shown in Fig. 5 C, when the degree of saturation of magnet valve core packet was between above-mentioned two kinds of situation, some was A through area for the magnetic line of force
b-A
B1Air-gap, another part is through the small bore core packet, the former magnetic resistance be a linearity, the latter's magnetic resistance is non-linear.
Fig. 6, Fig. 7, Fig. 8 are respectively MCR Working state analysis emulation sketch map and MCR operating state simulation result sketch map and magnetic valve type controllable reactor operating state conversion sketch map.Here just for the research work state, do not relate to magnet valve saturation variation issue, so simulate the course of work of MCR with fixed inductance.
In order to obtain the operating state of magnetic valve type controllable reactor MCR, use MATLAB/Simulink that the course of work of MCR has been carried out simulation analysis.
After the operation simulation document, the simulation result that obtains is as shown in Figure 7.We can analyze from figure, and the possible conducting situation of magnetic valve type controllable reactor thyristor K13, K2 and diode D1 has 5 kinds of operating states:
(1) K1 conducting, K2, D1 end;
(2) K1, D1 conducting, K2 ends;
(3) D1 conducting, K1, K2 end;
(4) K2 conducting, K1, D1 end;
(5) K2, D1 conducting, K1 ends.
Suppose that the work winding two ends of magnetic valve type controllable reactor are added with sinusoidal voltage: e=E
mSin ω t, the trigger angle of K1 and K2 is a.In conjunction with Fig. 7, the course of work of magnetic valve type controllable reactor is analyzed from point of theory:
(1) as no DC excitation (a=π), reactor has been in when stablizing no-load running, and e, 2 potential differences of f are zero, thereby can suppose from t=0 and begin, and reactor has been in state 3, i.e. D1 conducting, and K1, K2 end;
(2) between the power supply positive half period, the last forward voltage that bears of K1, the last reverse voltage that bears of K2.Therefore, if at this positive half cycle ω t=a constantly, to K1 gate pole input trigger impulse, K1 will conducting, and K2 keeps cut-off state.Therefore, controlled reactor gets the hang of 2, i.e. K1, D1 conducting, and K2 ends;
(3) after the K1 conducting after a period of time, D1 will turn-off because bearing reverse voltage, and MCR carries out the transition to state and is in state 1, i.e. K1 conducting, and K2, D1 end;
(4) after the system voltage zero passage got into negative half period, the last electric current of K1 reduced gradually, and diode D1 begins conducting, and MCR gets the hang of 2, i.e. K1, D1 conducting, and K2 ends;
(5) afterwards, thyristor K13 electric current reduces gradually, last zero passage and ending, and reactor gets the hang of 3, i.e. D1 conducting, K1, K2 end;
(6) at the negative half period of power supply, the process analysis procedure analysis of thyristor K2 triggering and conducting during with the positive half cycle of power supply K1 triggering and conducting process similar fully.The state that converts into 5 of state, state 4, state 5 are got back to state 3 at last, begin next cycle of states.
Transfer process between each state is as shown in Figure 8.
Though the above-mentioned accompanying drawing that combines is described the embodiment of the utility model; But be not restriction to the utility model protection range; One of ordinary skill in the art should be understood that; On the basis of the technical scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection range of the utility model.
Claims (10)
1. a magnetic valve type controllable reactor is characterized in that, it comprises the external insulation tube; Said external insulation tube (22) upper end is provided with the upper end cover part; The lower end partly is connected with bottom end cover, and upper end cover partly comprises reactor HV Terminal (6) and upper end cover (16), and bottom end cover partly comprises reactor low-voltage terminal (13); Pulse control line terminal (25) and bottom end cover (12); On bottom end cover (12) inner surface, be fixed with the reactor main body, said reactor main body comprises core of reactor, and said core of reactor is provided with reactor main winding (21); Said reactor main winding (21) is connected with reactor HV Terminal (6), reactor low-voltage terminal (13) respectively; Said core of reactor upper end is provided with insulating support (19), and insulating support (19) is provided with thyristor assembly (9) and pulse transformer (18), and said thyristor assembly (9) is connected with pulse transformer (18); Pulse transformer (18) is connected with pulse control line terminal (25), said pulse transformer (18) flow direction and reactor main winding (21) flow direction quadrature; Be marked with insulating oil (10) in the said external insulation tube (22).
2. magnetic valve type controllable reactor as claimed in claim 1 is characterized in that, said upper end cover partly comprises upper end cover (16), upper flange (15) and the temperature rise buffer air bag (17) that is provided with from top to bottom; Said bottom end cover partly comprises lower flange (11) that is connected with external insulation tube (22) lower end and the bottom end cover (12) that is connected with lower flange (11), and the bottom of said bottom end cover also is provided with insulator foot (14); Said reactor low-voltage terminal (13) is located on the lower flange (11);
Be provided with high-voltage connection sleeve pipe (8) in said reactor HV Terminal (6), reactor low-voltage terminal (13) and the internal electrical antibody main body connection line; The withstand voltage 115kV of HV Terminal lead-in wire induction of said reactor HV Terminal (6), low-voltage terminal lead-in wire industrial frequency withstand voltage 45kV; Said external insulation tube (22), upper end cover (16), upper flange (15), bottom end cover (12), lower flange (11) scribble epoxy resin varnish.
3. magnetic valve type controllable reactor as claimed in claim 2; It is characterized in that; Said reactor main body is a self-excitation type DC power supply excitation control mode, and core of reactor is provided with and is used for the horizontal yoke of iron core that direct current flux flows, and the core of reactor upper end is provided with insulating support (19); Said high-voltage connection sleeve pipe (8) is located on the insulating support (19), is provided with the iron core positioning component (24) that is fixedly connected with lower flange (11) and bottom end cover (12) in core of reactor (20) lower end; Said iron core positioning component (24) comprises the electrical laminated wood through angle bar that is fixedly connected with insulator foot (14) and the bolt clamping that on angle bar, is provided with.
4. magnetic valve type controllable reactor as claimed in claim 3; It is characterized in that said core of reactor is two, said reactor main winding (21) comprises two main coils that independently are wound on respectively on two iron cores; Each main coil is divided into 4 sections, and every section is layered structure; Connect through horizontal yoke between two iron core two ends.
5. magnetic valve type controllable reactor as claimed in claim 4 is characterized in that, also is provided with in the said reactor main winding to be used for the outer excitation DC field winding (23) of low pressure; Said insulating support (19) comprises the fixedly electrical laminated wood of thyristor assembly (9); The lamination akebi crosses the bolt folder and is fixedly connected with two iron core upper ends; The pulse control line of the pulse transformer (18) that is connected with thyristor assembly (9) control end is provided with clamping wood part, and the pulse control line is connected with the pulse control line terminal (25) that draw the bottom.
6. magnetic valve type controllable reactor as claimed in claim 1 is characterized in that, said external insulation tube (22) is the epoxy fibreglass winding cylinder, and insulator foot (14) is the epoxy fibreglass base of height 500mm.
7. magnetic valve type controllable reactor as claimed in claim 2 is characterized in that, said upper end cover (16) edge is provided with the venthole (26) that connects inside and outside of reactor; 3 °～-5 ° angles of said venthole (26) duct and upper end cover horizontal plane; Said venthole (26) duct is embedded with nonmetal bend pipe.
8. magnetic valve type controllable reactor as claimed in claim 1; It is characterized in that; Said reactor HV Terminal (6) and/or reactor low-voltage terminal (13) are the outlet conducting rod, and said outlet conducting rod one end is an outlet conducting rod bolt (34), and the other end is an outlet conducting rod fixed part (31); Outlet conducting rod fixed part (31) diameter is greater than outlet conducting rod bolt (34) diameter; It is nut (27) that said outlet conducting rod bolt (34) end is provided with both sides; Be provided with the clamp structure that disk spring (28), flat shim (29) combine between the nut (27); On the screw rod between clamp structure and the outlet conducting rod fixed part, be provided with nut (27), flat shim (29) and square-section seal washer (30), said outlet conducting rod fixed part (31) is provided with blind hole; Blind hole and outlet conducting rod are coaxial, are provided with internal thread in the said blind hole; Said conducting rod ramp (32) is provided with screw rod (33), and said screw rod (33) is connected with the stiff end blind hole internal thread.
9. magnetic valve type controllable reactor as claimed in claim 8 is characterized in that, said conducting rod bolt (34) diameter is identical with the blind hole diameter that fixed part is provided with; Said conducting rod bolt (34) is identical with the blind threaded pitch of stiff end.
10. magnetic valve type controllable reactor as claimed in claim 8 is characterized in that, said square-section seal washer is an oil resistant rubber; Said outlet conducting rod and conducting rod ramp (32) are that red copper is zinc-plated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220108828 CN202487384U (en) | 2012-03-22 | 2012-03-22 | Magnetic valve type controllable reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220108828 CN202487384U (en) | 2012-03-22 | 2012-03-22 | Magnetic valve type controllable reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624004A (en) * | 2012-03-22 | 2012-08-01 | 山东电力集团公司济南供电公司 | Magnetic valve controllable reactor |
| CN110231787A (en) * | 2019-05-21 | 2019-09-13 | 国网浙江省电力有限公司电力科学研究院 | Magnetic valve type controllable reactor TT&C system and investigating method based on CompactRIO |
-
2012
- 2012-03-22 CN CN 201220108828 patent/CN202487384U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624004A (en) * | 2012-03-22 | 2012-08-01 | 山东电力集团公司济南供电公司 | Magnetic valve controllable reactor |
| CN102624004B (en) * | 2012-03-22 | 2014-04-16 | 山东电力集团公司济南供电公司 | Magnetic valve controllable reactor |
| CN110231787A (en) * | 2019-05-21 | 2019-09-13 | 国网浙江省电力有限公司电力科学研究院 | Magnetic valve type controllable reactor TT&C system and investigating method based on CompactRIO |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121213 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121213 Address after: Ji'nan City, Shandong province 250012 Luoyuan Street No. 238 Patentee after: Jinan Power Supply Co., Ltd. of Shandong Electric Power Corporation Patentee after: State Grid Corporation of China Address before: Ji'nan City, Shandong province 250012 Luoyuan Street No. 238 Patentee before: Jinan Power Supply Co., Ltd. of Shandong Electric Power Corporation |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20121010 Effective date of abandoning: 20140416 |
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| RGAV | Abandon patent right to avoid regrant |