CN103457221B - A kind of Structural Transformation collocation method of two 6 pulsation thyristor valves groups - Google Patents

A kind of Structural Transformation collocation method of two 6 pulsation thyristor valves groups Download PDF

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Publication number
CN103457221B
CN103457221B CN201210168878.7A CN201210168878A CN103457221B CN 103457221 B CN103457221 B CN 103457221B CN 201210168878 A CN201210168878 A CN 201210168878A CN 103457221 B CN103457221 B CN 103457221B
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isolating
isolating switch
converter valve
switches
groups
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CN103457221A (en
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张翔
田杰
李海英
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NR Electric Co Ltd
NR Engineering Co Ltd
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NR Electric Co Ltd
NR Engineering Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/10Flexible AC transmission systems [FACTS]

Abstract

The present invention discloses a kind of Structural Transformation collocation method of two 6 pulsation thyristor valves groups, and described two 6 pulsation thyristor valves groups comprise two 6 pulse conversion valve groups; Also comprise 14 isolating switch groups, 4 isolating switches and 2 Controlled Reactor groups, the folding controlling each isolating switch make two 6 pulsation thyristor valves groups in the winter time wire icing time be transformed into DC de-icing device ice-melt carried out to circuit, before carrying out actual ice-melt to circuit, make DC de-icing device that reactor is carried out zero load test as load, be not with under line condition and can completing up-flow, dynamic passive compensation is being carried out to AC system being transformed into static reactive equipment At All Other Times.This kind of collocation method can realize two 6 pulsation thyristor valves groups in normal ice melting operation mode, switching fast and automatically between zero load test operational mode and SVC operational mode.

Description

A kind of Structural Transformation collocation method of two 6 pulsation thyristor valves groups
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, south China area there occurs serious ice disaster, causes 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 succeeded in developing Be very effective in line ice-melting.The DC de-icing device of existing various structures form has dropped into actual motion at present.
The basic structure of the two 6 pulsating direct current deicing devices be made up of thyristor is that 6 pulsation rectifier bridges parallel connections of two standards form two 6 and to pulse rectifier bridges, 3 cross streams voltage commutations can be become direct voltage.During normal ice melting operation, direct voltage is added on transmission line and forms current circuit, by the object reached line conductor ice-melt of generating heat.The direct current size that two 6 DC de-icing devices of pulsing rectifier bridge parallel-connection structures can provide is 2 times of the 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 big current system test, generally needs actual track to stop transport, tests as load.This test method not only affects electrical network and normally runs, and complex operation, efficiency are very low.Alternatively, configurable suitable reactor carries out big current system test as load, so just no longer needs actual track to stop transport.With reactor do load test time, do not consume active power in theory, therefore, this test is otherwise known as zero load test.
Deicing device just can use when general circuit freezes in the winter time, and therefore economy is poor.When not ice-melt, often wish by converting device structure, the converter valve group of DC de-icing device is become Static Var Compensator (SVC), for AC system provides dynamic reactive to support, regulate AC system voltage, and then 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 in normal ice melting operation mode, zero load test operational mode and SVC operational mode, therefore, the present 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
Object of the present invention, be to provide a kind of Structural Transformation collocation method of two 6 pulsation thyristor valves groups, it can realize two 6 pulsation thyristor valves groups in normal ice melting operation mode, switching fast and automatically between zero load test operational 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 between two;
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 phase first inlet wire and 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 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 phase second inlet wire and 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 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;
One or six isolating switch group comprises the 1,1, one six three 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;
One one isolating switch group comprises first one by one, one by one two, three isolating switches one by one, its one end respectively with alternating-current B mutually the first inlet wire, exchange C phase first inlet wire, exchange A phase first inlet wire corresponding connected, the other end respectively with the one or three isolating switch group in the 1, one three two, one end correspondence of one three three isolating switches is connected, and described first one by one, one by one two, the other end of three isolating switches is also respectively with first in phased Reactor banks the 1 one by one, one or two, one end correspondence of one or three reactors is 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 correspondence of one two three isolating switches is connected, simultaneously with the one or four isolating switch group in the 1, one four two, one end correspondence of one four three isolating switches is 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 correspondence of First Five-Year Plan converter valve is connected,
One or five isolating switch group comprises first May Day, First Five-Year Plan two, First Five-Year Plan three isolating switch, its one end respectively with the 1, one or three, the negative electrode of First Five-Year Plan converter valve is corresponding is connected, the mutual short circuit of the other end forms common port; First July 1st in one or seven isolating switch group, 1, one end of one seven three isolating switches respectively with the one or four, one or six, the anode of one or two converter valve is corresponding is connected, the mutual short circuit of the other end forms common port; 1,1, the common port of one four three isolating switches is connected with the common port of first May Day, First Five-Year Plan two, First Five-Year Plan three isolating switch;
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;
21 isolating switch group comprises second one by one, 212, 213 isolating switches, its one end respectively with alternating-current B mutually the second inlet wire, exchange C phase second inlet wire, exchange A phase second inlet wire corresponding connected, the other end respectively with the two or three isolating switch group in the 231, 232, one end correspondence of 233 isolating switches is connected, and described second one by one, 212, the other end of 213 isolating switches is also respectively with second in phased Reactor banks the 21, two or two, one end correspondence of two or three reactors is 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 correspondence of 223 isolating switches is connected, simultaneously with the two or four isolating switch group in the 241, 242, one end correspondence of 243 isolating switches is 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 correspondence of two or five converter valve is connected,
Two or five isolating switch group comprise second May Day, 252,253 isolating switches, its one end respectively with the 21, two or three, the negative electrode of two or five converter valve is corresponding is connected, the mutual short circuit of the other end forms common port; Second July 1st in two or seven isolating switch group, 272, one end of 273 isolating switches respectively with the two or four, two or six, the anode of two or two converter valve is corresponding is connected, the mutual short circuit of the other end forms common port; 241,242, the common port of 243 isolating switches and second May Day, 252, the common port of 253 isolating switches is connected;
One end of first and second isolating switch connects A phase ice-melt wire and B phase ice-melt wire respectively, and the mutual short circuit of the other end forms common port; 1,1, the common port and the 231 of one three three isolating switches, 232, after the common port of 233 isolating switches is connected, then to be connected with the common port of first and second isolating switch;
One end of third and fourth isolating switch connects B phase ice-melt wire and C phase ice-melt wire respectively, and the mutual short circuit of the other end forms common port; First July 1st, 1, the common port of one seven three isolating switches and second July 1st, 272, after the common port of 273 isolating switches is connected, then to be 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, closed 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, one is had at least to close in two isolating switches, 3rd, one is had at least to close in four isolating switches, and second, three isolating switches do not allow to close simultaneously, two 6 pulsation thyristor valves groups are transformed into 6 pulsation rectifier parallel-connection structures of 2 standards, external output direct current generating positive and negative voltage, by controlling first, two, three, the difference of four isolating switches is opened, co-bit is put and is added on the different phase conductors of circuit by direct voltage, meet ice-melt demand,
When two 6 pulsation thyristor valves groups operate in zero load test operational mode, open the 1, one or two, one or six, 21, two or two, two or six isolating switch groups, closed 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 simultaneously closed forms short circuit, two 6 pulsation thyristor valves groups are transformed into 6 pulsation rectifier structures of 2 standards, external output direct current generating positive and negative voltage is directly added in 1 Controlled Reactor group two ends respectively, form zero load test structure,
When two 6 pulsation thyristor valves groups operate in static reactive SVC operational mode, open the one or three, one or four, the First Five-Year Plan, one or seven, two or three, two or four, two or five, two or seven isolating switch groups, closed one one, one two, one six, 21,22,26 isolating switch groups, by the thyristor-controlled reactor TCR valve group that the 6 pulsation triangles that two 6 pulsation thyristor valves groups are transformed into 2 platform independent connect.
After adopting such scheme, the present invention by accessing multiple isolating switch and reactor in existing 12 pulsation thyristor valves groups, the folding controlling each isolating switch make 12 pulsation thyristor valves groups in the winter time wire icing time be transformed into DC de-icing device ice-melt carried out to circuit, before carrying out actual ice-melt to circuit, make DC de-icing device that reactor is carried out zero load test as load, be not with under line condition and can completing up-flow, dynamic passive compensation is being carried out to AC system being transformed into static reactive equipment (SVC) At All Other Times.
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 load test operational 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 load test operational 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 described in detail.
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, often organizes the thyristor of valve by series connection varying number to adapt to the needs of different electric pressure; 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 between two, 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 simultaneously with to exchange C phase inlet wire Y_C connected with the negative electrode of converter valve YT2; Second 6 pulse conversion valve group is by converter valve DT1-6 one group of three phase full bridge circuit be formed by connecting between two, 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, 14 isolating switch group Y1-7, D1-7,4 isolating switch S1-4 and 2 Controlled Reactor group YR, DR are also increased in aforementioned structure, each isolating switch group all comprises 3 isolating switches, each Controlled Reactor group all comprises 3 Controlled Reactor, after each label, all increases A, B, C represent its place phase in Fig. 1.
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, one end of Y1C respectively with alternating-current B phase inlet wire Y_B, exchange C phase inlet wire Y_C, exchange A phase inlet wire Y_A to be connected, the other end respectively with isolating switch Y3A, Y3B, one end of Y3C is connected, described isolating switch Y1A, Y1B, the other end of Y1C also respectively with reactor YRA, YRB, one 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, one end of Y2C is connected, simultaneously with isolating switch Y4A, Y4B, one 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.
One 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.One 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, one end of D1C respectively with alternating-current B phase inlet wire D_B, exchange C phase inlet wire D_C, exchange A phase inlet wire D_A to be connected, the other end respectively with isolating switch D3A, D3B, one end of D3C is connected, described isolating switch D1A, D1B, the other end of D1C also respectively with reactor DRA, DRB, one 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, one end of D2C is connected, simultaneously with isolating switch D4A, D4B, one 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.
One 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.One 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.
One end of isolating switch S1, S2 connects A phase ice-melt wire LA and B phase ice-melt wire LB respectively, and the mutual short circuit of the other end forms common port.After the common port of isolating switch Y3A, Y3B, Y3C is connected with the common port of isolating switch D3A, D3B, D3C, then be connected with the common port of isolating switch S1, S2.
One end of isolating switch S3, S4 connects B phase ice-melt wire LB and C phase ice-melt wire LC respectively, and the mutual short circuit of the other end forms common port.After the common port of isolating switch Y7A, Y7B, Y7C is connected with the common port of isolating switch D7A, D7B, D7C, then be 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, one is had at least to close in isolating switch S1 and S2, one is had at least to close in isolating switch S3 and S4, isolating switch S2 and S3 does not allow to close simultaneously, final 12 pulsation thyristor valves groups are transformed into 6 pulsation rectifier parallel-connection structures of 2 standards, external output direct current generating positive and negative voltage, by isolating switch S1, S2, S3, the difference of S4 is opened, co-bit is put and is added on the different phase conductors of circuit by direct voltage, meet ice-melt demand, as shown in Figure 2, the typical technique of painting as shown in Figure 3 can be drawn as.Under this operational mode, the direct voltage that control system regulates converter valve group to export by the trigger angle changing thyristor valve, is applicable to the wire of different electric pressure, wire diameter and length.
When two 6 pulsation thyristor valves groups operate in zero load test operational 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 opens, isolating switch S2 and S3 is simultaneously closed forms short circuit, final two 6 pulsation thyristor valves groups are transformed into 6 pulsation rectifier structures of 2 standards, external output direct current generating positive and negative voltage is directly added in reactor YR and DR two ends respectively, form zero load test structure, as shown in Figure 4, the typical technique of painting as shown in Figure 5 can be drawn as.Under this operational mode, control system by controlling 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, the typical technique of painting as shown in Figure 7 can be drawn as.Under this operational mode, control system regulates 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 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 Control protection system, different operational modes is become to the two 6 pulsation thyristor valves group auto-changings of the control realization of automatically controlled isolating switch opening and closing position.
AC three-phase inlet wire Y_A, Y_B, Y_C and in addition three-phase inlet wire D_A, D_B, D_C draw the rectifier transformer low-pressure side from different winding connection form, the line voltage-phase difference 30deg of two groups of three-phase inlet wires, and amplitude is identical.
It should be noted that, propose a kind of Structural Transformation collocation method of general two 6 pulsation thyristor valves groups herein, wherein the particular capacity, voltage parameter etc. of equipment need to determine after the consideration of the combined factors such as maximum current, dynamic passive compensation capacity according to when ice-melt wire voltage grade, wire diameter, length, zero load test.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.

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 between two;
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 phase first inlet wire and 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 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 phase second inlet wire and 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 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;
One or six isolating switch group comprises the 1,1, one six three 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;
One one isolating switch group comprises first one by one, one by one two, three isolating switches one by one, described first one by one, one by one two, one by one one end of three isolating switches respectively with alternating-current B mutually the first inlet wire, exchange C phase first inlet wire, exchange A phase first inlet wire corresponding connected, the other end respectively with the one or three isolating switch group in the 1, one three two, one end correspondence of one three three isolating switches is connected, and described first one by one, one by one two, the other end of three isolating switches is also respectively with first in phased Reactor banks the 1 one by one, one or two, one end correspondence of one or three reactors is 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 correspondence of one two three isolating switches is connected, simultaneously with the one or four isolating switch group in the 1, one four two, one end correspondence of one four three isolating switches is 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 correspondence of First Five-Year Plan converter valve is connected,
One or five isolating switch group comprises first May Day, First Five-Year Plan two, First Five-Year Plan three isolating switch, one end of described first May Day, First Five-Year Plan two, First Five-Year Plan three isolating switch respectively with the 1, one or three, the negative electrode of First Five-Year Plan converter valve is corresponding is connected, the mutual short circuit of the other end forms common port; First July 1st in one or seven isolating switch group, 1, one end of one seven three isolating switches respectively with the one or four, one or six, the anode of one or two converter valve is corresponding is connected, the mutual short circuit of the other end forms common port; 1,1, the common port of one four three isolating switches is connected with the common port of first May Day, First Five-Year Plan two, First Five-Year Plan three isolating switch;
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;
21 isolating switch group comprises second one by one, 212, 213 isolating switches, described second one by one, 212, one end of 213 isolating switches respectively with alternating-current B the second inlet wire mutually, exchange C phase second inlet wire, exchange A phase second inlet wire corresponding connected, the other end respectively with the two or three isolating switch group in the 231, 232, one end correspondence of 233 isolating switches is connected, and described second one by one, 212, the other end of 213 isolating switches is also respectively with second in phased Reactor banks the 21, two or two, one end correspondence of two or three reactors is 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 correspondence of 223 isolating switches is connected, simultaneously with the two or four isolating switch group in the 241, 242, one end correspondence of 243 isolating switches is 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 correspondence of two or five converter valve is connected,
Two or five isolating switch group comprise second May Day, 252,253 isolating switches, described second May Day, 252, one end of 253 isolating switches respectively with the 21, two or three, the negative electrode of two or five converter valve is corresponding is connected, the mutual short circuit of the other end forms common port; Second July 1st in two or seven isolating switch group, 272, one end of 273 isolating switches respectively with the two or four, two or six, the anode of two or two converter valve is corresponding is connected, the mutual short circuit of the other end forms common port; 241,242, the common port of 243 isolating switches and second May Day, 252, the common port of 253 isolating switches is connected;
One end of first and second isolating switch connects A phase ice-melt wire and B phase ice-melt wire respectively, and the mutual short circuit of the other end forms common port; 1,1, the common port and the 231 of one three three isolating switches, 232, after the common port of 233 isolating switches is connected, then to be connected with the common port of first and second isolating switch;
One end of third and fourth isolating switch connects B phase ice-melt wire and C phase ice-melt wire respectively, and the mutual short circuit of the other end forms common port; First July 1st, 1, the common port of one seven three isolating switches and second July 1st, 272, after the common port of 273 isolating switches is connected, then to be 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, closed 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, one is had at least to close in two isolating switches, 3rd, one is had at least to close in four isolating switches, and second, three isolating switches do not allow to close simultaneously, two 6 pulsation thyristor valves groups are transformed into 6 pulsation rectifier parallel-connection structures of 2 standards, external output direct current generating positive and negative voltage, by controlling first, two, three, the difference of four isolating switches is opened, co-bit is put and is added on the different phase conductors of circuit by direct voltage, meet ice-melt demand,
When two 6 pulsation thyristor valves groups operate in zero load test operational mode, open the 1, one or two, one or six, 21, two or two, two or six isolating switch groups, closed 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 simultaneously closed forms short circuit, two 6 pulsation thyristor valves groups are transformed into 6 pulsation rectifier structures of 2 standards, external output direct current generating positive and negative voltage is directly added in 1 Controlled Reactor group two ends respectively, form zero load test structure,
When two 6 pulsation thyristor valves groups operate in static reactive SVC operational mode, open the one or three, one or four, the First Five-Year Plan, one or seven, two or three, two or four, two or five, two or seven isolating switch groups, closed one one, one two, one six, 21,22,26 isolating switch groups, by the thyristor-controlled reactor TCR valve group that the 6 pulsation triangles that two 6 pulsation thyristor valves groups are transformed into 2 platform independent connect.
CN201210168878.7A 2012-05-28 2012-05-28 A kind of Structural Transformation collocation method of two 6 pulsation thyristor valves groups Expired - Fee Related CN103457221B (en)

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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
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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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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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