CN103427386A - Setting method of main loop of dual 6 ripple ice melting device - Google Patents
Setting method of main loop of dual 6 ripple ice melting device Download PDFInfo
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- CN103427386A CN103427386A CN2012101657064A CN201210165706A CN103427386A CN 103427386 A CN103427386 A CN 103427386A CN 2012101657064 A CN2012101657064 A CN 2012101657064A CN 201210165706 A CN201210165706 A CN 201210165706A CN 103427386 A CN103427386 A CN 103427386A
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Abstract
The invention discloses a setting method of a main loop of a dual 6 ripple ice melting device. The main loop of the dual 6 ripple ice melting device comprises two 6 ripple converter valve groups, 14 isolation switch groups, 4 isolation switches, 2 phase controlled reactor groups and 2 current sharing reactors. By controlling the opening and the closing of each isolation switch, the dual 6 ripple ice melting device is in a direct current ice melting operation mode to carry out ice melting on a line when a wire is covered by ice in winter, and converts into a static reactive compensation device to carry out dynamic reactive compensation on an alternating current system in other time. The allocation method has the advantage of visual structure, can convert the ice melting device into two independent TCRs in triangular wiring form, and can make full use of the capacity of a thyristor converter valve.
Description
Technical field
The invention belongs to field of power, particularly a kind of major loop method to set up of two 6 pulsation deicing devices.
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.
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 deicing devices there are differences between the primary equipment structure such as converter valve group under normal ice melting operation mode and SVC operational mode, can realize two kinds of switchings between operational mode by the evolution of some isolating switches.China Electric Power Research Institute applies for a patent in 200910077139.5 the scheme that the main electrical scheme that adopts switches between ice melting operation mode and SVC operational mode, structure is not directly perceived, only can convert out the SVC of a set of 6 pulsation delta connection forms from two 6 pulsation deicing devices, could not take full advantage of the capacity of thyristor valves.The scheme that two kinds of operational modes that AREA company proposes are switched mutually (please refer to Xu Shukai, Zhao Jie. Ice Disaster in Power Grids case and anti-ice de-icing technology summary. the south electric network technology, 2008,2 (2): 1-6), structure is more directly perceived, but also can only convert out the SVC of a set of 6 pulsation delta connection forms from two 6 pulsation deicing devices, could not take full advantage of equally the capacity of thyristor valves.
Summary of the invention
Purpose of the present invention, be to provide a kind of major loop method to set up of two 6 pulsation deicing devices, its structure is directly perceived, and changeable from the ice melting operation mode by the opening and closing position that operates each isolating switch is the SVC of delta connection form, and can take full advantage of the capacity of thyristor valves.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of major loop method to set up of two 6 pulsation deicing devices, the major loop of described two 6 pulsation deicing devices comprises 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 is connected with the negative electrode of the one or four converter valve, and the anode of the one or three converter valve is connected with the negative electrode of the one or six converter valve, and the anode of the one or five converter valve is connected with the negative electrode of the one or two converter valve; In second 6 pulse conversion valve group, the anode of the 21 converter valve is connected with the negative electrode of the two or four converter valve, and the anode of the two or three converter valve is connected with the negative electrode of the two or six converter valve, and the anode of the two or five converter valve is connected with the negative electrode of the two or two converter valve;
Also comprise 14 isolating switch groups, 4 isolating switches, 2 Controlled Reactor groups and 2 equalizing reactors, each isolating switch group all comprises 3 isolating switches, and each Controlled Reactor group all comprises 3 Controlled Reactor, wherein, the one one isolating switch group comprises first one by one, one by one two, three isolating switches one by one, the one or two isolating switch group comprises the 1, one two two, one two three isolating switches, the one or three isolating switch group comprises the 1, one three two, one three three isolating switches, the one or four isolating switch group comprises the 1, one four two, one four three isolating switches, the one or five isolating switch group comprised for first May Day, First Five-Year Plan two, First Five-Year Plans three isolating switch, the one or six isolating switch group comprises the 1, one six two, one six three isolating switches, the one or seven isolating switch group comprised for first July 1st, one seven two, one seven three isolating switches, the 21 isolating switch group comprises second one by one, 212, 213 isolating switches, the two or two isolating switch group comprises the 221, 222, 223 isolating switches, the two or three isolating switch group comprises the 231, 232, 233 isolating switches, the two or four isolating switch group comprises the 241, 242, 243 isolating switches, the two or five isolating switch group comprised for second May Day, 252, 253 isolating switches, the two or six isolating switch group comprises the 261, 262, 263 isolating switches, the two or seven isolating switch group comprised for second July 1st, 272, 273 isolating switches, the first phased Reactor banks comprises the one one, 1,1 reactors, and the second phased Reactor banks comprises the 21,22,23 reactors,
The anode of the one one converter valve simultaneously with the negative electrode, first of the one or four converter valve one by one, an end of one two one isolating switches is connected to form common port, the negative electrode of the one one converter valve and the 1, one May Day isolating switch an end be connected to form common port, an end of the anode of the one or four converter valve and the 1,171 isolating switch is connected to form common port; The anode of the one or three converter valve is connected to form common port with the negative electrode of the one or six converter valve, an end of the one one two, 1 isolating switches simultaneously, one end of the negative electrode of the one or three converter valve and the 1, First Five-Year Plans two isolating switch is connected to form common port, and an end of the anode of the one or six converter valve and the one six two, 1 isolating switches is connected to form common port; The anode of the one or five converter valve is connected to form common port with the negative electrode of the one or two converter valve, an end of the one one three, 1 isolating switches simultaneously, one end of the negative electrode of the one or five converter valve and the 1, First Five-Year Plans three isolating switch is connected to form common port, and an end of the anode of the one or two converter valve and the one six three, 1 isolating switches is connected to form common port;
One end of the other end of first May Day, one six one isolating switches and the one three one isolating switch is connected to form common port, one end of the other end of the one five two, 1 isolating switches and the one three two isolating switch is connected to form common port, and an end of the other end of the one five three, 1 isolating switches and the one three three isolating switch is connected to form common port;
The mutual short circuit of the other end of the one four one, 1,1 isolating switches forms common port, and this common port is connected to an end of the first equalizing reactor, and the mutual short circuit of the other end of first July 1st, 1, one seven three isolating switches forms common port;
First one by one, one by one two, the other end of one by one three isolating switches is connected with an end of the one one, 1,1 reactors in the first phased Reactor banks respectively;
The other end of the one one reactor is connected to form common port with the other end of the one two one, 1 isolating switches simultaneously, and be connected to and exchange A the first inlet wire mutually, the other end of the one or two reactor is connected to form common port with the other end of the one two two, 1 isolating switches simultaneously, and be connected to alternating-current B the first inlet wire mutually, the other end of the one or three reactor is connected to form common port with the other end of the one two three, 1 isolating switches, and is connected to interchange C the first inlet wire mutually simultaneously;
The anode of the 21 converter valve simultaneously with the negative electrode, second of the two or four converter valve one by one, an end of 221 isolating switches is connected to form common port, the negative electrode of the 21 converter valve and the 241, two May Day isolating switch an end be connected to form common port, the anode of the two or four converter valve and the 261, two the July 1st isolating switch an end be connected to form common port; The anode of the two or three converter valve is connected to form common port with the negative electrode of the two or six converter valve, an end of the 212,222 isolating switches simultaneously, one end of the negative electrode of the two or three converter valve and the 242,252 isolating switches is connected to form common port, and an end of the anode of the two or six converter valve and the 262,272 isolating switches is connected to form common port; The anode of the two or five converter valve is connected to form common port with the negative electrode of the two or two converter valve, an end of the 213,223 isolating switches simultaneously, one end of the negative electrode of the two or five converter valve and the 243,253 isolating switches is connected to form common port, and an end of the anode of the two or two converter valve and the 263,273 isolating switches is connected to form common port;
One end of the other end of second May Day, 261 isolating switches and the 231 isolating switch is connected to form common port, one end of the other end of the 252,262 isolating switches and the 232 isolating switch is connected to form common port, and an end of the other end of the 253,263 isolating switches and the 233 isolating switch is connected to form common port;
The mutual short circuit of the other end of the 241,242,243 isolating switches forms common port, and this common port is connected to an end of the second equalizing reactor, and the mutual short circuit of the other end of second July 1st, 272,273 isolating switches forms common port;
Second one by one, the other end of 212,213 isolating switches is connected with an end of the 21,22,23 reactors in the second phased Reactor banks respectively;
The other end of the 21 reactor is connected to form common port with the other end of the 221,233 isolating switches simultaneously, and be connected to and exchange A the second inlet wire mutually, the other end of the two or two reactor is connected to form common port with the other end of the 222,231 isolating switches simultaneously, and be connected to alternating-current B the second inlet wire mutually, the other end of the two or three reactor is connected to form common port with the other end of the 223,232 isolating switches, and is connected to interchange C the second inlet wire mutually simultaneously;
One end of first and second isolating switch connects respectively A phase ice-melt wire and B phase DC ice-melting, is connected respectively to the other end of first and second equalizing reactor after the mutual short circuit of the other end, forms common port;
One end of third and fourth isolating switch connects respectively B phase ice-melt wire and C phase DC ice-melting, after the mutual short circuit of the other end, with the common port of the common port of first July 1st, 1, one seven three isolating switches, second July 1st, 272,273 isolating switches, is connected respectively;
Described collocation method is:
When two 6 pulsation deicing devices operate in normal ice melting operation mode, open the 1, one or three, First Five-Year Plan, one or six, 21, two or three, two or five, two or six isolating switch groups, the closed the 1, one or four, one or seven, two or two, two or four, 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 deicing devices 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 deicing devices operate in static reactive SVC operational mode, open the one two, 1,1,22,24,27 isolating switch groups, closed the one one, 1, First Five-Year Plan, one or six, 21, two or three, two or five, two or six isolating switch groups, be transformed into by two 6 pulsation deicing devices the thyristor-controlled reactor TCR valve group that 6 pulsation triangles of 2 platform independent connect.
After adopting such scheme, the present invention is by a plurality of isolating switches of access and reactor in existing two 6 pulsation deicing devices, the folding of controlling each isolating switch makes two 6 pulsation deicing devices carry out ice-melt to circuit during wire icing in the winter time, at the static reactive equipment (SVC) that is transformed into At All Other Times 2 delta connection forms, AC system is carried out to dynamic passive compensation.
The accompanying drawing explanation
Fig. 1 is the main circuit structure schematic diagram of two 6 pulsation deicing devices in the present invention;
Fig. 2 is two 6 pulsation deicing devices electrical block diagram when normal ice melting operation mode in the present invention;
Fig. 3 is the electrical block diagram of two 6 pulsation deicing devices when static reactive (SVC) operational mode in the present invention;
Fig. 4 is the typical technique of painting of two 6 pulsation deicing devices 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 major loop method to set up of two 6 pulsation deicing devices, its institute based on two 6 pulsation thyristor valves groups comprise two 6 pulse conversion valve groups, the thyristor of each valve group by the varying number of connecting is to adapt to the needs of different electric pressures;
The present invention is when implementing, also increase by 14 isolating switch group Y1-7, D1-7,4 isolating switch S1-4,2 Controlled Reactor group YR, DR and 2 equalizing reactor R1, R2 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.
Described 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 anode of converter valve YT1 is connected with the negative electrode of converter valve YT4 and is connected to form common port with the end of isolating switch Y1A and Y2A simultaneously, the anode of converter valve YT3 is connected with the negative electrode of converter valve YT6 and is connected to form common port with the end of isolating switch Y1B and Y2B, and the anode of converter valve YT5 is connected with the negative electrode of converter valve YT2 and is connected to form common port with the end of isolating switch Y1C and Y2C simultaneously simultaneously;
The end of the negative electrode of converter valve YT1 and isolating switch Y4A, Y5A is connected to form common port, the end of the anode of converter valve YT4 and isolating switch Y6A, Y7A is connected to form common port, the end of the negative electrode of converter valve YT3 and isolating switch Y4B, Y5B is connected to form common port, the end of the anode of converter valve YT6 and isolating switch Y6B, Y7B is connected to form common port, the end of the negative electrode of converter valve YT5 and isolating switch Y4C, Y5C is connected to form common port, and the end of the anode of converter valve YT2 and isolating switch Y6C, Y7C is connected to form common port;
The end of the other end of isolating switch Y5A, Y6A and isolating switch Y3A is connected to form common port, the end of the other end of isolating switch Y5B, Y6B and isolating switch Y3B is connected to form common port, and the end of the other end of isolating switch Y5C, Y6C and isolating switch Y3C is connected to form common port;
The mutual short circuit of the other end of isolating switch Y4A, Y4B, Y4C forms common port, and the mutual short circuit of the other end of isolating switch Y7A, Y7B, Y7C forms common port;
The other end of isolating switch Y1A, Y1B, Y1C is connected with the end of Controlled Reactor YRA, YRB, YRC respectively;
The other end of the other end of the other end of Controlled Reactor YRA and isolating switch Y2A and isolating switch Y3C is connected to form common port, and be connected to and exchange A phase inlet wire Y_A, the other end of the other end of the other end of Controlled Reactor YRB and isolating switch Y2B and isolating switch Y3A is connected to form common port, and be connected to alternating-current B phase inlet wire Y_B, the other end of the other end of the other end of Controlled Reactor YRC and isolating switch Y2C and isolating switch Y3B is connected to form common port, and is connected to interchange C phase inlet wire Y_C;
Described 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 anode of converter valve DT1 is connected with the negative electrode of converter valve DT4 and is connected to form common port with the end of isolating switch D1A and D2A simultaneously, the anode of converter valve DT3 is connected with the negative electrode of converter valve DT6 and is connected to form common port with the end of isolating switch D1B and D2B, and the anode of converter valve DT5 is connected with the negative electrode of converter valve DT2 and is connected to form common port with the end of isolating switch D1C and D2C simultaneously simultaneously;
The end of the negative electrode of converter valve DT1 and isolating switch D4A, D5A is connected to form common port, the end of the anode of converter valve DT4 and isolating switch D6A, D7A is connected to form common port, the end of the negative electrode of converter valve DT3 and isolating switch D4B, D5B is connected to form common port, the end of the anode of converter valve DT6 and isolating switch D6B, D7B is connected to form common port, the end of the negative electrode of converter valve DT5 and isolating switch D4C, D5C is connected to form common port, and the end of the anode of converter valve DT2 and isolating switch D6C, D7C is connected to form common port;
The end of the other end of isolating switch D5A, D6A and isolating switch D3A is connected to form common port, the end of the other end of isolating switch D5B, D6B and isolating switch D3B is connected to form common port, and the end of the other end of isolating switch D5C, D6C and isolating switch D3C is connected to form common port;
The mutual short circuit of the other end of isolating switch D4A, D4B, D4C forms common port, and the mutual short circuit of the other end of isolating switch D7A, D7B, D7C forms common port;
The other end of isolating switch D1A, D1B, D1C is connected with the end of Controlled Reactor DRA, DRB, DRC respectively;
The other end of the other end of the other end of Controlled Reactor DRA and isolating switch D2A and isolating switch D3C is connected to form common port, and be connected to and exchange A phase inlet wire D_A, the other end of the other end of the other end of Controlled Reactor DRB and isolating switch D2B and isolating switch D3A is connected to form common port, and be connected to alternating-current B phase inlet wire D_B, the other end of the other end of the other end of Controlled Reactor DRC and isolating switch D2C and isolating switch D3B is connected to form common port, and is connected to interchange C phase inlet wire D_C;
The end of isolating switch S1, S2 connects respectively A phase ice-melt wire LA and B phase DC ice-melting LB, and the mutual short circuit of the other end forms common port; Be connected by equalizing reactor R1 between the common port of the common port of isolating switch S1, S2 and isolating switch Y4A, Y4B, Y4C, be connected by equalizing reactor R2 between the common port of the common port of isolating switch S1, S2 and isolating switch D4A, D4B, D4C;
The end of isolating switch S3, S4 connects respectively B phase ice-melt wire LB and C phase DC ice-melting LC, and the mutual short circuit of the other end forms common port; The common port of the common port of the common port of isolating switch S3, S4 and isolating switch Y7A, Y7B, Y7C and isolating switch D7A, D7B, D7C directly is connected.
When two 6 pulsation deicing devices operate in normal ice melting operation mode, open isolating switch group Y1, Y3, Y5, Y6, D1, D3, D5, D6, closed isolating switch group Y2, Y4, Y7, D2, D4, 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 two 6 pulsation deicing devices 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.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 deicing devices operate in static reactive SVC operational mode, open isolating switch group Y2, Y4, Y7, D2, D4, D7, closed isolating switch group Y1, Y3, Y5, Y6, D1, D3, D5, 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 3, can be drawn as the typical technique of painting as shown in Figure 4.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 deicing device 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 major loop method to set up of general two 6 pulsation deicing devices herein, when wherein the particular capacity of equipment, voltage parameter etc. need to be tested according to DC ice-melting electric pressure, 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 major loop method to set up of two 6 pulsation deicing devices, the major loop of described two 6 pulsation deicing devices comprises 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 is connected with the negative electrode of the one or four converter valve, and the anode of the one or three converter valve is connected with the negative electrode of the one or six converter valve, and the anode of the one or five converter valve is connected with the negative electrode of the one or two converter valve; In second 6 pulse conversion valve group, the anode of the 21 converter valve is connected with the negative electrode of the two or four converter valve, and the anode of the two or three converter valve is connected with the negative electrode of the two or six converter valve, and the anode of the two or five converter valve is connected with the negative electrode of the two or two converter valve; It is characterized in that:
Also comprise 14 isolating switch groups, 4 isolating switches, 2 Controlled Reactor groups and 2 equalizing reactors, each isolating switch group all comprises 3 isolating switches, and each Controlled Reactor group all comprises 3 Controlled Reactor, wherein, the one one isolating switch group comprises first one by one, one by one two, three isolating switches one by one, the one or two isolating switch group comprises the 1, one two two, one two three isolating switches, the one or three isolating switch group comprises the 1, one three two, one three three isolating switches, the one or four isolating switch group comprises the 1, one four two, one four three isolating switches, the one or five isolating switch group comprised for first May Day, First Five-Year Plan two, First Five-Year Plans three isolating switch, the one or six isolating switch group comprises the 1, one six two, one six three isolating switches, the one or seven isolating switch group comprised for first July 1st, one seven two, one seven three isolating switches, the 21 isolating switch group comprises second one by one, 212, 213 isolating switches, the two or two isolating switch group comprises the 221, 222, 223 isolating switches, the two or three isolating switch group comprises the 231, 232, 233 isolating switches, the two or four isolating switch group comprises the 241, 242, 243 isolating switches, the two or five isolating switch group comprised for second May Day, 252, 253 isolating switches, the two or six isolating switch group comprises the 261, 262, 263 isolating switches, the two or seven isolating switch group comprised for second July 1st, 272, 273 isolating switches, the first phased Reactor banks comprises the one one, 1,1 reactors, and the second phased Reactor banks comprises the 21,22,23 reactors,
The anode of the one one converter valve simultaneously with the negative electrode, first of the one or four converter valve one by one, an end of one two one isolating switches is connected to form common port, the negative electrode of the one one converter valve and the 1, one May Day isolating switch an end be connected to form common port, an end of the anode of the one or four converter valve and the 1,171 isolating switch is connected to form common port; The anode of the one or three converter valve is connected to form common port with the negative electrode of the one or six converter valve, an end of the one one two, 1 isolating switches simultaneously, one end of the negative electrode of the one or three converter valve and the 1, First Five-Year Plans two isolating switch is connected to form common port, and an end of the anode of the one or six converter valve and the one six two, 1 isolating switches is connected to form common port; The anode of the one or five converter valve is connected to form common port with the negative electrode of the one or two converter valve, an end of the one one three, 1 isolating switches simultaneously, one end of the negative electrode of the one or five converter valve and the 1, First Five-Year Plans three isolating switch is connected to form common port, and an end of the anode of the one or two converter valve and the one six three, 1 isolating switches is connected to form common port;
One end of the other end of first May Day, one six one isolating switches and the one three one isolating switch is connected to form common port, one end of the other end of the one five two, 1 isolating switches and the one three two isolating switch is connected to form common port, and an end of the other end of the one five three, 1 isolating switches and the one three three isolating switch is connected to form common port;
The mutual short circuit of the other end of the one four one, 1,1 isolating switches forms common port, and this common port is connected to an end of the first equalizing reactor, and the mutual short circuit of the other end of first July 1st, 1, one seven three isolating switches forms common port;
First one by one, one by one two, the other end of one by one three isolating switches is connected with an end of the one one, 1,1 reactors in the first phased Reactor banks respectively;
The other end of the one one reactor is connected to form common port with the other end of the one two one, 1 isolating switches simultaneously, and be connected to and exchange A the first inlet wire mutually, the other end of the one or two reactor is connected to form common port with the other end of the one two two, 1 isolating switches simultaneously, and be connected to alternating-current B the first inlet wire mutually, the other end of the one or three reactor is connected to form common port with the other end of the one two three, 1 isolating switches, and is connected to interchange C the first inlet wire mutually simultaneously;
The anode of the 21 converter valve simultaneously with the negative electrode, second of the two or four converter valve one by one, an end of 221 isolating switches is connected to form common port, the negative electrode of the 21 converter valve and the 241, two May Day isolating switch an end be connected to form common port, the anode of the two or four converter valve and the 261, two the July 1st isolating switch an end be connected to form common port; The anode of the two or three converter valve is connected to form common port with the negative electrode of the two or six converter valve, an end of the 212,222 isolating switches simultaneously, one end of the negative electrode of the two or three converter valve and the 242,252 isolating switches is connected to form common port, and an end of the anode of the two or six converter valve and the 262,272 isolating switches is connected to form common port; The anode of the two or five converter valve is connected to form common port with the negative electrode of the two or two converter valve, an end of the 213,223 isolating switches simultaneously, one end of the negative electrode of the two or five converter valve and the 243,253 isolating switches is connected to form common port, and an end of the anode of the two or two converter valve and the 263,273 isolating switches is connected to form common port;
One end of the other end of second May Day, 261 isolating switches and the 231 isolating switch is connected to form common port, one end of the other end of the 252,262 isolating switches and the 232 isolating switch is connected to form common port, and an end of the other end of the 253,263 isolating switches and the 233 isolating switch is connected to form common port;
The mutual short circuit of the other end of the 241,242,243 isolating switches forms common port, and this common port is connected to an end of the second equalizing reactor, and the mutual short circuit of the other end of second July 1st, 272,273 isolating switches forms common port;
Second one by one, the other end of 212,213 isolating switches is connected with an end of the 21,22,23 reactors in the second phased Reactor banks respectively;
The other end of the 21 reactor is connected to form common port with the other end of the 221,233 isolating switches simultaneously, and be connected to and exchange A the second inlet wire mutually, the other end of the two or two reactor is connected to form common port with the other end of the 222,231 isolating switches simultaneously, and be connected to alternating-current B the second inlet wire mutually, the other end of the two or three reactor is connected to form common port with the other end of the 223,232 isolating switches, and is connected to interchange C the second inlet wire mutually simultaneously;
One end of first and second isolating switch connects respectively A phase ice-melt wire and B phase DC ice-melting, is connected respectively to the other end of first and second equalizing reactor after the mutual short circuit of the other end, forms common port;
One end of third and fourth isolating switch connects respectively B phase ice-melt wire and C phase DC ice-melting, after the mutual short circuit of the other end, with the common port of the common port of first July 1st, 1, one seven three isolating switches, second July 1st, 272,273 isolating switches, is connected respectively;
Described collocation method is:
When two 6 pulsation deicing devices operate in normal ice melting operation mode, open the 1, one or three, First Five-Year Plan, one or six, 21, two or three, two or five, two or six isolating switch groups, the closed the 1, one or four, one or seven, two or two, two or four, 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 deicing devices 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 deicing devices operate in static reactive SVC operational mode, open the one two, 1,1,22,24,27 isolating switch groups, closed the one one, 1, First Five-Year Plan, one or six, 21, two or three, two or five, two or six isolating switch groups, be transformed into by two 6 pulsation deicing devices the thyristor-controlled reactor TCR valve group that 6 pulsation triangles of 2 platform independent connect.
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| CN103427386B (en) | 2016-03-02 |
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