CN103457221A - Method for configuring structure transformation of double 6-pulse thyristor converter valve groups - Google Patents
Method for configuring structure transformation of double 6-pulse thyristor converter valve groups Download PDFInfo
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- CN103457221A CN103457221A CN2012101688787A CN201210168878A CN103457221A CN 103457221 A CN103457221 A CN 103457221A CN 2012101688787 A CN2012101688787 A CN 2012101688787A CN 201210168878 A CN201210168878 A CN 201210168878A CN 103457221 A CN103457221 A CN 103457221A
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Abstract
The invention discloses a method for configuring structure transformation of double 6-pulse thyristor converter valve groups. The double 6-pulse thyristor converter valve groups include two 6-pulse converter valve groups, fourteen isolating switch groups, four isolating switches and two phase-control electric reactor groups. On and off of the various isolating switches are controlled, so that the double 6-pulse thyristor converter valve groups can be transformed into direct-current ice melting devices to melt ice for circuits when conducting wires are coated by the ice in winters, the electric reactors of the direct-current ice melting devices are used as load for zero-power tests before the ice on the circuits actually begins to be melted, currents can be increased without the circuits, and the double 6-pulse thyristor converter valve groups are used as static var compensators so as to perform dynamic reactive compensation on an alternating-current system in other times. The method for configuring the structure transformation has the advantage that normal ice melting running modes, zero-power test running modes and SVC (static var compensator) running modes of the double 6-pulse thyristor converter valve groups can be quickly and automatically switched over by the aid of the method.
Description
Technical field
The invention belongs to field of power, particularly a kind of structural change collocation method of two 6 pulsation thyristor valves groups.
Background technology
Within 2008, serious ice and snow disaster has occurred in the south China area, has caused very big destruction to transmission line and electric network composition.For this reason, domestic unit actively develops the research work of anti-ice, ice-melt aspect.Wherein, the DC de-icing device of succeeding in developing effect aspect line ice-melting is remarkable.The DC de-icing device of at present existing various structures form has dropped into actual motion.
The basic structure of the two 6 pulsating direct current deicing devices that consist of thyristor is 6 pulsation rectifier bridges of two standards pair 6 pulsation rectifier bridges that form in parallel, 3 cross streams voltage commutations can be become to direct voltage.During normal ice melting operation, direct voltage is added on transmission line and forms current circuit, by heating, reaches the purpose to the line conductor ice-melt.The direct current size that the DC de-icing devices of two 6 pulsation rectifier bridge parallel-connection structures can provide is 2 times of DC de-icing device of single 6 pulsation rectifier bridge structures, can meet the ice-melt demand of large wire diameter wire.
DC de-icing device, when carrying out large current system test, generally need to be stopped transport actual track, as load, is tested.This test method not only affects electrical network normally to be moved, and complex operation, efficiency are very low.Mode as an alternative, configurable suitable reactor carries out large current system test as load, so just no longer needs actual track is stopped transport.When with reactor, doing load and tested, do not consume in theory active power, therefore, this test zero energy test that is otherwise known as.
General of deicing device just can be used when circuit freezes in the winter time, so economy is poor.When not ice-melt, often wish by device structure is converted, the converter valve group of DC de-icing device is become to Static Var Compensator (SVC), for providing dynamic reactive, AC system supports, regulate AC system voltage, and then the dfamped alternating current low frequency oscillations, improve AC system stability limit and conveying capacity.
Two 6 pulsation thyristor valves groups once all there are differences between structure on normal ice melting operation mode, zero energy test run mode and SVC operational mode, therefore, the inventor proposes a kind of Structural Transformation collocation method of two 6 pulsation thyristor valves groups, realize the switching fast and automatically between above-mentioned three kinds of structures with the opening and closing position by operating each isolating switch, this case produces thus.
Summary of the invention
Purpose of the present invention, be to provide a kind of Structural Transformation collocation method of two 6 pulsation thyristor valves groups, it can realize the two 6 fast and automatically switchings of pulsation thyristor valves group between normal ice melting operation mode, zero energy test run mode and SVC operational mode.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of Structural Transformation collocation method of two 6 pulsation thyristor valves groups, described two 6 pulsation thyristor valves groups comprise two 6 pulse conversion valve groups, described two 6 pulse conversion valve block structures are identical, are all by 6 converter valve, one group of three phase full bridge circuit be formed by connecting in twos;
In first 6 pulse conversion valve group, the anode of the one one converter valve respectively with the negative electrode of the one or four converter valve, exchange A mutually the first inlet wire be connected, the anode of the one or three converter valve respectively with the negative electrode of the one or six converter valve, alternating-current B mutually the first inlet wire be connected, the anode of the one or five converter valve respectively with the negative electrode of the one or two converter valve, to exchange C phase the first inlet wire connected; In second 6 pulse conversion valve group, the anode of the 21 converter valve respectively with the negative electrode of the two or four converter valve, exchange A mutually the second inlet wire be connected, the anode of the two or three converter valve respectively with the negative electrode of the two or six converter valve, alternating-current B mutually the second inlet wire be connected, the anode of the two or five converter valve respectively with the negative electrode of the two or two converter valve, to exchange C phase the second inlet wire connected;
Also comprise 14 isolating switch groups, 4 isolating switches and 2 Controlled Reactor groups, each isolating switch group all comprises 3 isolating switches, and each Controlled Reactor group all comprises 3 Controlled Reactor;
The one or six isolating switch group comprises the one six one, 1,1 isolating switches, the negative electrode of the one one converter valve is connected with the anode of the one or four converter valve by the one six one isolating switch, the negative electrode of the one or three converter valve is connected with the anode of the one or six converter valve by the one six two isolating switch, and the negative electrode of the one or five converter valve is connected with the anode of the one or two converter valve by the one six three isolating switch;
The one one isolating switch group comprises first one by one, one by one two, three isolating switches one by one, the one end respectively with alternating-current B the first inlet wire mutually, exchange C the first inlet wire mutually, exchange A the first inlet wire be corresponding mutually and be connected, the other end respectively with the one or three isolating switch group in the 1, one three two, one end of one three three isolating switches is corresponding to be connected, and described first one by one, one by one two, one by one the other end of three isolating switches also respectively with the first phased Reactor banks in the 1, one or two, one end of one or three reactors is corresponding to be connected, and the one three one, one three two, the mutual short circuit of the other end of one three three isolating switches forms common port, the 1, one or two, the other end of one or three reactors respectively with the one or two isolating switch group in the 1, one two two, one end of one two three isolating switches is corresponding to be connected, simultaneously with the one or four isolating switch group in the 1, one four two, one end of one four three isolating switches is corresponding to be connected, and the one four one, one four two, the mutual short circuit of the other end of one four three isolating switches forms common port, the 1, one two two, the other end of one two three isolating switches is respectively with the 1, one or three, the negative electrode of First Five-Year Plan converter valve is corresponding to be connected,
The one or five isolating switch group comprises first May Day, First Five-Year Plan two, First Five-Year Plans three isolating switch, the one end respectively with the one one, 1, corresponding being connected of negative electrode of First Five-Year Plan converter valve, the mutual short circuit of the other end forms common port; In the one or seven isolating switch group, an end of first July 1st, 1, one seven three isolating switches is corresponding connected with the anode of the one four, 1,1 converter valve respectively, and the mutual short circuit of the other end forms common port; The common port of the one four one, 1,1 isolating switches is connected with the common port of first May Day, First Five-Year Plan two, First Five-Year Plans three isolating switch;
The two or six isolating switch group comprises the 261,262,263 isolating switches, the negative electrode of the 21 converter valve is connected with the anode of the two or four converter valve by the 261 isolating switch, the negative electrode of the two or three converter valve is connected with the anode of the two or six converter valve by the 262 isolating switch, and the negative electrode of the two or five converter valve is connected with the anode of the two or two converter valve by the 263 isolating switch;
The 21 isolating switch group comprises second one by one, 212, 213 isolating switches, the one end respectively with alternating-current B the second inlet wire mutually, exchange C the second inlet wire mutually, exchange A the second inlet wire be corresponding mutually and be connected, the other end respectively with the two or three isolating switch group in the 231, 232, one end of 233 isolating switches is corresponding to be connected, and described second one by one, 212, the other end of 213 isolating switches also respectively with the second phased Reactor banks in the 21, two or two, one end of two or three reactors is corresponding to be connected, and the 231, 232, the mutual short circuit of the other end of 233 isolating switches forms common port, the 21, two or two, the other end of two or three reactors respectively with the two or two isolating switch group in the 221, 222, one end of 223 isolating switches is corresponding to be connected, simultaneously with the two or four isolating switch group in the 241, 242, one end of 243 isolating switches is corresponding to be connected, and the 241, 242, the mutual short circuit of the other end of 243 isolating switches forms common port, the 221, 222, the other end of 223 isolating switches is respectively with the 21, two or three, the negative electrode of two or five converter valve is corresponding to be connected,
The two or five isolating switch group comprises second May Day, 252,253 isolating switches, and the one end is corresponding connected with the negative electrode of the 21,23,25 converter valve respectively, and the mutual short circuit of the other end forms common port; In the two or seven isolating switch group, an end of second July 1st, 272,273 isolating switches is corresponding connected with the anode of the 24,26,22 converter valve respectively, and the mutual short circuit of the other end forms common port; The common port of the 241,242,243 isolating switches is connected with the common port of second May Day, 252,253 isolating switches;
One end of first and second isolating switch connects respectively A phase ice-melt wire and B phase ice-melt wire, and the mutual short circuit of the other end forms common port; The common port of the one three one, 1,1 isolating switches is with after the common port of the 231,232,233 isolating switches is connected, then is connected with the common port of first and second isolating switch;
One end of third and fourth isolating switch connects respectively B phase ice-melt wire and C phase ice-melt wire, and the mutual short circuit of the other end forms common port; The common port of first July 1st, 1, one seven three isolating switches is with after the common port of second July 1st, 272,273 isolating switches is connected, then is connected with the common port of third and fourth isolating switch;
Described collocation method is:
When two 6 pulsation thyristor valves groups operate in normal ice melting operation mode, open the 1, one or two, one or six, 21, two or two, two or six isolating switch groups, the closed the 1, one or four, First Five-Year Plan, one or seven, two or three, two or four, two or five, two or seven isolating switch groups, first, has a closure in two isolating switches at least, the 3rd, has a closure in four isolating switches at least, and second, three isolating switches do not allow simultaneously closed, two 6 pulsation thyristor valves groups are transformed into to 6 pulsation rectifier parallel-connection structures of 2 standards, externally export the direct current generating positive and negative voltage, by controlling first, two, three, the difference of four isolating switches is opened, co-bit is put direct voltage is added on the different phase conductors of circuit, meet the ice-melt demand,
When two 6 pulsation thyristor valves groups operate in zero energy test run mode, open the 1, one or two, one or six, 21, two or two, two or six isolating switch groups, the closed the 1, one or four, First Five-Year Plan, one or seven, two or three, two or four, two or five, two or seven isolating switch groups, open first, four isolating switches, by second, three isolating switches are the closed short circuit that forms simultaneously, two 6 pulsation thyristor valves groups are transformed into to 6 pulsation rectifier structures of 2 standards, externally output direct current generating positive and negative voltage directly is added in respectively 1 Controlled Reactor group two ends, form the zero energy test structure,
When two 6 pulsation thyristor valves groups operate in static reactive SVC operational mode, open the one three, 1, First Five-Year Plan, one or seven, two or three, two or four, two or five, two or seven isolating switch groups, closed the one one, 1,1,21,22,26 isolating switch groups, the thyristor-controlled reactor TCR valve group that the 6 pulsation triangles that two 6 pulsation thyristor valves groups are transformed into to 2 platform independent connect.
After adopting such scheme, the present invention is by a plurality of isolating switches of access and reactor in existing 12 pulsation thyristor valves groups, the folding of controlling each isolating switch makes 12 pulsation thyristor valves groups be transformed into DC de-icing device during wire icing in the winter time circuit is carried out to ice-melt, before being carried out to actual ice-melt, circuit make DC de-icing device carry out the zero energy test using reactor as load, can complete up-flow not being with in the circuit situation, AC system be carried out to dynamic passive compensation being transformed into At All Other Times static reactive equipment (SVC).
The accompanying drawing explanation
Fig. 1 is the main circuit structure schematic diagram of two 6 pulsation thyristor valves groups in the present invention;
Fig. 2 is two 6 pulsation thyristor valves groups electrical block diagram when normal ice melting operation mode in the present invention;
Fig. 3 is the typical technique of painting of two 6 pulsation thyristor valves groups electrical block diagram when normal ice melting operation mode in the present invention;
Fig. 4 is two 6 pulsation thyristor valves groups electrical block diagram when zero energy test run mode in the present invention;
Fig. 5 is the typical technique of painting of two 6 pulsation thyristor valves groups electrical block diagram when zero energy test run mode in the present invention;
Fig. 6 is the electrical block diagram of two 6 pulsation thyristor valves groups when static reactive (SVC) operational mode in the present invention;
Fig. 7 is the typical technique of painting of two 6 pulsation thyristor valves groups electrical block diagram when static reactive (SVC) operational mode in the present invention.
Embodiment
Below with reference to accompanying drawing, technical scheme of the present invention is elaborated.
The invention provides a kind of Structural Transformation collocation method of two 6 pulsation thyristor valves groups, its based on two 6 pulsation thyristor valves groups comprise two 6 pulse conversion valve groups, the anode of first 6 pulse conversion valve group is connected with the anode of second 6 pulse conversion valve group, and every group of valve thyristor by the series connection varying number is to adapt to the needs of different electric pressures; Described two 6 pulse conversion valve block structures are identical, wherein, first 6 pulse conversion valve group is by converter valve YT1-6 one group of three phase full bridge circuit be formed by connecting in twos, and the negative electrode of the anode of converter valve YT1 and converter valve YT4 is connected simultaneously with to exchange A phase inlet wire Y_A connected, the anode of converter valve YT3 is connected with the negative electrode of converter valve YT6 and is connected with alternating-current B phase inlet wire Y_B simultaneously, and the anode of converter valve YT5 is connected with the negative electrode of converter valve YT2 simultaneously with to exchange C phase inlet wire Y_C connected; Second 6 pulse conversion valve group are by converter valve DT1-6 one group of three phase full bridge circuit be formed by connecting in twos, and the negative electrode of the anode of converter valve DT1 and converter valve DT4 is connected simultaneously with to exchange A phase inlet wire D_A connected, the anode of converter valve DT3 is connected with the negative electrode of converter valve DT6 and is connected with alternating-current B phase inlet wire D_B simultaneously, and the anode of converter valve DT5 is connected with the negative electrode of converter valve DT2 simultaneously with to exchange C phase inlet wire D_C connected.
The present invention is when implementing, also increase by 14 isolating switch group Y1-7, D1-7,4 isolating switch S1-4 and 2 Controlled Reactor group YR, DR in aforementioned structure, each isolating switch group all comprises 3 isolating switches, each Controlled Reactor group all comprises 3 Controlled Reactor, all increases A, B after each label in Fig. 1, C means its place phase.
The negative electrode of converter valve YT1 is connected with the anode of converter valve YT4 by isolating switch Y6A, and the negative electrode of converter valve YT3 is connected with the anode of converter valve YT6 by isolating switch Y6B, and the negative electrode of converter valve YT5 is connected with the anode of converter valve YT2 by isolating switch Y6C.
Isolating switch Y1A, Y1B, the end of Y1C respectively with alternating-current B phase inlet wire Y_B, exchange C phase inlet wire Y_C, exchanging A phase inlet wire Y_A is connected, the other end respectively with isolating switch Y3A, Y3B, the end of Y3C is connected, described isolating switch Y1A, Y1B, the other end of Y1C also respectively with reactor YRA, YRB, the end of YRC is connected, isolating switch Y3A, Y3B, the mutual short circuit of the other end of Y3C forms common port, reactor YRA, YRB, the other end of YRC respectively with isolating switch Y2A, Y2B, the end of Y2C is connected, simultaneously with isolating switch Y4A, Y4B, the end of Y4C is connected, isolating switch Y4A, Y4B, the mutual short circuit of the other end of Y4C forms common port, isolating switch Y2A, Y2B, the other end of Y2C respectively with converter valve YT1, YT3, the negative electrode of YT5 is connected.
The end of isolating switch Y5A, Y5B, Y5C is connected with the negative electrode of converter valve YT1, YT3, YT5 respectively, and the mutual short circuit of the other end forms common port.The end of isolating switch Y7A, Y7B, Y7C is connected with the anode of converter valve YT4, YT6, YT2 respectively, and the mutual short circuit of the other end forms common port.The common port of isolating switch Y4A, Y4B, Y4C is connected with the common port of isolating switch Y5A, Y5B, Y5C.
The negative electrode of converter valve DT1 is connected with the anode of converter valve DT4 by isolating switch D6A, and the negative electrode of converter valve DT3 is connected with the anode of converter valve DT6 by isolating switch D6B, and the negative electrode of converter valve DT5 is connected with the anode of converter valve DT2 by isolating switch D6C.
Isolating switch D1A, D1B, the end of D1C respectively with alternating-current B phase inlet wire D_B, exchange C phase inlet wire D_C, exchanging A phase inlet wire D_A is connected, the other end respectively with isolating switch D3A, D3B, the end of D3C is connected, described isolating switch D1A, D1B, the other end of D1C also respectively with reactor DRA, DRB, the end of DRC is connected, isolating switch D3A, D3B, the mutual short circuit of the other end of D3C forms common port, reactor DRA, DRB, the other end of DRC respectively with isolating switch D2A, D2B, the end of D2C is connected, simultaneously with isolating switch D4A, D4B, the end of D4C is connected, isolating switch D4A, D4B, the mutual short circuit of the other end of D4C forms common port, isolating switch D2A, D2B, the other end of D2C respectively with converter valve DT1, DT3, the negative electrode of DT5 is connected.
The end of isolating switch D5A, D5B, D5C is connected with the negative electrode of converter valve DT1, DT3, DT5 respectively, and the mutual short circuit of the other end forms common port.The end of isolating switch D7A, D7B, D7C is connected with the anode of converter valve DT4, DT6, DT2 respectively, and the mutual short circuit of the other end forms common port.The common port of isolating switch D4A, D4B, D4C is connected with the common port of isolating switch D5A, D5B, D5C.
The end of isolating switch S1, S2 connects respectively A phase ice-melt wire LA and B phase ice-melt wire LB, and the mutual short circuit of the other end forms common port.The common port of isolating switch Y3A, Y3B, Y3C is with after the common port of isolating switch D3A, D3B, D3C is connected, then is connected with the common port of isolating switch S1, S2.
The end of isolating switch S3, S4 connects respectively B phase ice-melt wire LB and C phase ice-melt wire LC, and the mutual short circuit of the other end forms common port.The common port of isolating switch Y7A, Y7B, Y7C is with after the common port of isolating switch D7A, D7B, D7C is connected, then is connected with the common port of isolating switch S3, S4.
When 12 pulsation thyristor valves groups operate in normal ice melting operation mode, open isolating switch group Y1, Y2, Y6, D1, D2, D6, closed isolating switch group Y3, Y4, Y5, Y7, D3, D4, D5, D7, has a closure in isolating switch S1 and S2 at least, has a closure in isolating switch S3 and S4 at least, isolating switch S2 and S3 do not allow simultaneously closed, final 12 pulsation thyristor valves groups are transformed into 6 pulsation rectifier parallel-connection structures of 2 standards, externally export the direct current generating positive and negative voltage, can pass through isolating switch S1, S2, S3, the difference of S4 is opened, co-bit is put direct voltage is added on the different phase conductors of circuit, meet the ice-melt demand, as shown in Figure 2, can be drawn as the typical technique of painting as shown in Figure 3.Under this operational mode, control system is regulated the direct voltage of converter valve group output by the trigger angle that changes thyristor valve, applicable to the wire of different electric pressures, wire diameter and length.
When two 6 pulsation thyristor valves groups operate in zero energy test run mode, open isolating switch group Y1, Y2, Y6, D1, D2, D6, closed isolating switch group Y3, Y4, Y5, Y7, D3, D4, D5, D7, isolating switch S1 and S4 open, isolating switch S2 and S3 be the closed short circuit that forms simultaneously, final two 6 pulsation thyristor valves groups are transformed into 6 pulsation rectifier structures of 2 standards, externally output direct current generating positive and negative voltage directly is added in respectively reactor YR and DR two ends, form the zero energy test structure, as shown in Figure 4, can be drawn as the typical technique of painting as shown in Figure 5.Under this operational mode, control system passes through to control the direct up-flow of trigger angle of thyristor valve, and does not need actual track as load.
When two 6 pulsation thyristor valves groups operate in static reactive SVC operational mode, open isolating switch group Y3, Y4, Y5, Y7, D3, D4, D5, D7, closed isolating switch group Y1, Y2, Y6, D1, D2, D6, the thyristor-controlled reactor TCR valve group that the 6 pulsation triangles that final two 6 pulsation thyristor valves groups are transformed into 2 platform independent connect, as shown in Figure 6, can be drawn as the typical technique of painting as shown in Figure 7.Under this operational mode, control system is regulated the output reactive power size of static reactive SVC to meet the needs of AC system voltage-regulation and reactive power compensation by the angle of flow of controlling thyristor valve.
Isolating switch group Y1, Y2, Y3, Y4, Y5, Y6, Y7, D1, D2, D3, D4, D5, D6, D7 and isolating switch S1, S2, S3, S4 all adopt electric isolating switch, can carry out Long-distance Control.By controlling protection system, the two 6 pulsation thyristor valves group auto-changings of the control realization of automatically controlled isolating switch opening and closing position are become to different operational modes.
AC three-phase inlet wire Y_A, Y_B, Y_C and other three-phase inlet wire D_A, D_B, D_C draw the rectifier transformer low-pressure side from different winding connection forms, and the line voltage-phase of two groups of three-phase inlet wires differs 30 deg, and amplitude is identical.
It should be noted that, proposed a kind of Structural Transformation collocation method of general two 6 pulsation thyristor valves groups herein, when wherein the particular capacity of equipment, voltage parameter etc. need to be tested according to ice-melt wire voltage grade, wire diameter, length, zero energy, the combined factors such as maximum current, dynamic passive compensation capacity are determined after considering.
Above embodiment only, for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought proposed according to the present invention, and any change of doing on the technical scheme basis, within all falling into protection range of the present invention.
Claims (1)
1. the Structural Transformation collocation method of two 6 pulsation thyristor valves groups, described two 6 pulsation thyristor valves groups comprise two 6 pulse conversion valve groups, described two 6 pulse conversion valve block structures are identical, are all by 6 converter valve, one group of three phase full bridge circuit be formed by connecting in twos;
In first 6 pulse conversion valve group, the anode of the one one converter valve respectively with the negative electrode of the one or four converter valve, exchange A mutually the first inlet wire be connected, the anode of the one or three converter valve respectively with the negative electrode of the one or six converter valve, alternating-current B mutually the first inlet wire be connected, the anode of the one or five converter valve respectively with the negative electrode of the one or two converter valve, to exchange C phase the first inlet wire connected; In second 6 pulse conversion valve group, the anode of the 21 converter valve respectively with the negative electrode of the two or four converter valve, exchange A mutually the second inlet wire be connected, the anode of the two or three converter valve respectively with the negative electrode of the two or six converter valve, alternating-current B mutually the second inlet wire be connected, the anode of the two or five converter valve respectively with the negative electrode of the two or two converter valve, to exchange C phase the second inlet wire connected; It is characterized in that:
Also comprise 14 isolating switch groups, 4 isolating switches and 2 Controlled Reactor groups, each isolating switch group all comprises 3 isolating switches, and each Controlled Reactor group all comprises 3 Controlled Reactor;
The one or six isolating switch group comprises the one six one, 1,1 isolating switches, the negative electrode of the one one converter valve is connected with the anode of the one or four converter valve by the one six one isolating switch, the negative electrode of the one or three converter valve is connected with the anode of the one or six converter valve by the one six two isolating switch, and the negative electrode of the one or five converter valve is connected with the anode of the one or two converter valve by the one six three isolating switch;
The one one isolating switch group comprises first one by one, one by one two, three isolating switches one by one, the one end respectively with alternating-current B the first inlet wire mutually, exchange C the first inlet wire mutually, exchange A the first inlet wire be corresponding mutually and be connected, the other end respectively with the one or three isolating switch group in the 1, one three two, one end of one three three isolating switches is corresponding to be connected, and described first one by one, one by one two, one by one the other end of three isolating switches also respectively with the first phased Reactor banks in the 1, one or two, one end of one or three reactors is corresponding to be connected, and the one three one, one three two, the mutual short circuit of the other end of one three three isolating switches forms common port, the 1, one or two, the other end of one or three reactors respectively with the one or two isolating switch group in the 1, one two two, one end of one two three isolating switches is corresponding to be connected, simultaneously with the one or four isolating switch group in the 1, one four two, one end of one four three isolating switches is corresponding to be connected, and the one four one, one four two, the mutual short circuit of the other end of one four three isolating switches forms common port, the 1, one two two, the other end of one two three isolating switches is respectively with the 1, one or three, the negative electrode of First Five-Year Plan converter valve is corresponding to be connected,
The one or five isolating switch group comprises first May Day, First Five-Year Plan two, First Five-Year Plans three isolating switch, the one end respectively with the one one, 1, corresponding being connected of negative electrode of First Five-Year Plan converter valve, the mutual short circuit of the other end forms common port; In the one or seven isolating switch group, an end of first July 1st, 1, one seven three isolating switches is corresponding connected with the anode of the one four, 1,1 converter valve respectively, and the mutual short circuit of the other end forms common port; The common port of the one four one, 1,1 isolating switches is connected with the common port of first May Day, First Five-Year Plan two, First Five-Year Plans three isolating switch;
The two or six isolating switch group comprises the 261,262,263 isolating switches, the negative electrode of the 21 converter valve is connected with the anode of the two or four converter valve by the 261 isolating switch, the negative electrode of the two or three converter valve is connected with the anode of the two or six converter valve by the 262 isolating switch, and the negative electrode of the two or five converter valve is connected with the anode of the two or two converter valve by the 263 isolating switch;
The 21 isolating switch group comprises second one by one, 212, 213 isolating switches, the one end respectively with alternating-current B the second inlet wire mutually, exchange C the second inlet wire mutually, exchange A the second inlet wire be corresponding mutually and be connected, the other end respectively with the two or three isolating switch group in the 231, 232, one end of 233 isolating switches is corresponding to be connected, and described second one by one, 212, the other end of 213 isolating switches also respectively with the second phased Reactor banks in the 21, two or two, one end of two or three reactors is corresponding to be connected, and the 231, 232, the mutual short circuit of the other end of 233 isolating switches forms common port, the 21, two or two, the other end of two or three reactors respectively with the two or two isolating switch group in the 221, 222, one end of 223 isolating switches is corresponding to be connected, simultaneously with the two or four isolating switch group in the 241, 242, one end of 243 isolating switches is corresponding to be connected, and the 241, 242, the mutual short circuit of the other end of 243 isolating switches forms common port, the 221, 222, the other end of 223 isolating switches is respectively with the 21, two or three, the negative electrode of two or five converter valve is corresponding to be connected,
The two or five isolating switch group comprises second May Day, 252,253 isolating switches, and the one end is corresponding connected with the negative electrode of the 21,23,25 converter valve respectively, and the mutual short circuit of the other end forms common port; In the two or seven isolating switch group, an end of second July 1st, 272,273 isolating switches is corresponding connected with the anode of the 24,26,22 converter valve respectively, and the mutual short circuit of the other end forms common port; The common port of the 241,242,243 isolating switches is connected with the common port of second May Day, 252,253 isolating switches;
One end of first and second isolating switch connects respectively A phase ice-melt wire and B phase ice-melt wire, and the mutual short circuit of the other end forms common port; The common port of the one three one, 1,1 isolating switches is with after the common port of the 231,232,233 isolating switches is connected, then is connected with the common port of first and second isolating switch;
One end of third and fourth isolating switch connects respectively B phase ice-melt wire and C phase ice-melt wire, and the mutual short circuit of the other end forms common port; The common port of first July 1st, 1, one seven three isolating switches is with after the common port of second July 1st, 272,273 isolating switches is connected, then is connected with the common port of third and fourth isolating switch;
Described collocation method is:
When two 6 pulsation thyristor valves groups operate in normal ice melting operation mode, open the 1, one or two, one or six, 21, two or two, two or six isolating switch groups, the closed the 1, one or four, First Five-Year Plan, one or seven, two or three, two or four, two or five, two or seven isolating switch groups, first, has a closure in two isolating switches at least, the 3rd, has a closure in four isolating switches at least, and second, three isolating switches do not allow simultaneously closed, two 6 pulsation thyristor valves groups are transformed into to 6 pulsation rectifier parallel-connection structures of 2 standards, externally export the direct current generating positive and negative voltage, by controlling first, two, three, the difference of four isolating switches is opened, co-bit is put direct voltage is added on the different phase conductors of circuit, meet the ice-melt demand,
When two 6 pulsation thyristor valves groups operate in zero energy test run mode, open the 1, one or two, one or six, 21, two or two, two or six isolating switch groups, the closed the 1, one or four, First Five-Year Plan, one or seven, two or three, two or four, two or five, two or seven isolating switch groups, open first, four isolating switches, by second, three isolating switches are the closed short circuit that forms simultaneously, two 6 pulsation thyristor valves groups are transformed into to 6 pulsation rectifier structures of 2 standards, externally output direct current generating positive and negative voltage directly is added in respectively 1 Controlled Reactor group two ends, form the zero energy test structure,
When two 6 pulsation thyristor valves groups operate in static reactive SVC operational mode, open the one three, 1, First Five-Year Plan, one or seven, two or three, two or four, two or five, two or seven isolating switch groups, closed the one one, 1,1,21,22,26 isolating switch groups, the thyristor-controlled reactor TCR valve group that the 6 pulsation triangles that two 6 pulsation thyristor valves groups are transformed into to 2 platform independent connect.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840416A (en) * | 2014-03-19 | 2014-06-04 | 南京南瑞继保电气有限公司 | Direct-current deicing and reactive compensation device and implementation method |
| CN107181263A (en) * | 2016-12-12 | 2017-09-19 | 南京南瑞继保电气有限公司 | The DC ice melting of zero load test and SVC major loop and method to set up can be achieved |
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| US4638238A (en) * | 1985-10-15 | 1987-01-20 | Westinghouse Electric Corp | Switching technique for thyristor-switched capacitors to achieve network damping |
| JPH09512699A (en) * | 1994-04-29 | 1997-12-16 | ミシガン ステイト ユニヴァーシティー | How to improve the certainty of voltage stability of a transmission system |
| CN101505043A (en) * | 2009-03-06 | 2009-08-12 | 南方电网技术研究中心 | Method for automatically switching between DC ice melting three-phase AC line |
| CN201623436U (en) * | 2009-06-18 | 2010-11-03 | 江西省电力科学研究院 | Direct-current ice melting device capable of being multiplexed into TSC |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4638238A (en) * | 1985-10-15 | 1987-01-20 | Westinghouse Electric Corp | Switching technique for thyristor-switched capacitors to achieve network damping |
| JPH09512699A (en) * | 1994-04-29 | 1997-12-16 | ミシガン ステイト ユニヴァーシティー | How to improve the certainty of voltage stability of a transmission system |
| CN101505043A (en) * | 2009-03-06 | 2009-08-12 | 南方电网技术研究中心 | Method for automatically switching between DC ice melting three-phase AC line |
| CN201623436U (en) * | 2009-06-18 | 2010-11-03 | 江西省电力科学研究院 | Direct-current ice melting device capable of being multiplexed into TSC |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103840416A (en) * | 2014-03-19 | 2014-06-04 | 南京南瑞继保电气有限公司 | Direct-current deicing and reactive compensation device and implementation method |
| CN103840416B (en) * | 2014-03-19 | 2016-05-18 | 南京南瑞继保电气有限公司 | A kind of DC ice melting hold concurrently reactive power compensator and implementation method |
| CN107181263A (en) * | 2016-12-12 | 2017-09-19 | 南京南瑞继保电气有限公司 | The DC ice melting of zero load test and SVC major loop and method to set up can be achieved |
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| CN103457221B (en) | 2016-03-02 |
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