CN104714138B - Extra-high voltage direct-current deicing device up-flow pressure build-up test system - Google Patents
Extra-high voltage direct-current deicing device up-flow pressure build-up test system Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 73
- 230000000630 rising effect Effects 0.000 claims abstract description 45
- 230000001012 protector Effects 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims description 10
- 230000010363 phase shift Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 description 3
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Abstract
The invention discloses a kind of extra-high voltage direct-current deicing device up-flow pressure build-up test system; comprise over-current overvoltage protector, multiple phase voltage regulator, up-flow pressure build-up test switch, pulse wave rising current transformer, pulse wave step-up transformer, rising test pressure-equalizing device, pressure build-up test pressure-equalizing device and trial voltage output branch case, organic connection between them.The present invention effectively can solve Large Copacity in extra-high voltage direct-current deicing device up-flow, pressure build-up test system and be fixedly installed in the requirement of transformer station; Effectively can solve big current and high-voltage test requirement in the debugging of extra-high voltage direct-current deicing device; Can be extra-high voltage direct-current deicing device and build up that post debugging provides a kind of reliable, economical, effective up-flow, pressure build-up test system.
Description
Technical field
The present invention relates to a kind of extra-high voltage direct-current deicing device up-flow pressure build-up test system.
Background technology
Extra-high voltage direct-current deicing device is that UHV transmission line reply ice damage provides effective ice-melt means, but need power supply capacity large due to during extra-high voltage direct-current deicing device band circuit actual motion, and UHV transmission line is important passway for transmitting electricity, extra-high voltage direct-current deicing device builds up the rear very difficult extra high voltage line of reality that utilizes and carries out debugging test, therefore extra-high voltage direct-current deicing device experiment system design is a ring important in the development of extra-high voltage direct-current deicing device.Therefore, carry out extra-high voltage direct-current deicing device up-flow, pressure build-up test systematic study, there is important theory and technology and be worth.Home and abroad minority colleges and universities and R&D institution are studied power line DC ice-melting device up-flow, pressure build-up test system, device has the features such as capacity is little, output current is little, only meet 500kV and the debugging of following DC de-icing device, to being suitable for extra-high voltage direct-current deicing device up-flow, there is not been reported for pressure build-up test system.
Summary of the invention
The object of the present invention is to provide a kind of be applicable to Large Copacity, big current, high voltage, heterogeneous number extra-high voltage direct-current deicing device up-flow pressure build-up test system.
This extra-high voltage direct-current deicing device up-flow pressure build-up test system provided by the invention, comprise over-current overvoltage protector, multiple phase voltage regulator, up-flow pressure build-up test switch, pulse wave rising current transformer, pulse wave step-up transformer, rising test pressure-equalizing device, pressure build-up test pressure-equalizing device and trial voltage output branch case, wherein over-current overvoltage protector exports the input end of multiple phase voltage regulator described in termination, this multiple phase voltage regulator output terminal is connected with the input end of described up-flow pressure build-up test switch, this up-flow, pressure build-up test switch output terminal is connected respectively with the input end of described pulse wave rising current transformer and pulse wave step-up transformer, the output terminal of pulse wave rising current transformer is connected with the input end of described rising test pressure-equalizing device, the output terminal of this pulse wave step-up transformer is connected with the input end of described pressure build-up test pressure-equalizing device, this rising test pressure-equalizing device is connected with the input end of described trial voltage output branch case respectively with the output terminal of pressure build-up test pressure-equalizing device.
Described over-current overvoltage protector (1) is 10kV over-current overvoltage protector.Described multiple phase voltage regulator is 10kV-6 phase voltage regulator.Pulse wave rising current transformer has two, and pulse wave step-up transformer also has two.Described pulse wave rising current transformer and pulse wave step-up transformer are respectively 24 pulse wave rising current transformers and 24 pulse wave step-up transformers.Described 24 pulse wave rising current transformers and 24 pulse wave step-up transformer secondary are four groups of three-phase low-voltage windings, and secondary low pressure winding adopts lengthened triangular structure, phase shift+22.5 ° respectively between each winding ,-22.5 ° ,+7.5 ° ,-7.5 °.Described 24 pulse wave rising current transformers are 22V-24 pulse wave rising current transformer, described 24 pulse wave step-up transformers are 11kV-24 pulse wave step-up transformer.
The present invention is fully recognized that extra-high voltage deicing device up-flow, pressure build-up test system needs two basic characteristics, one is that pilot system capacity is large and integrated level is high, pilot system needs to be fixedly installed in transformer station, and pilot system capacity is several times as much as existing 500kV and following deicing device debug system capacity; Two is that pilot system output current is large, the voltage number of phases is many, output current size and the voltage number of phases are all several times as much as existing 500kV and following deicing device debug system, therefore design in current-sharing, be all installed with and count and heat dissipation design gives special consideration, can find out from technical scheme of the present invention and the invention has the beneficial effects as follows: 1), effectively can improve pilot system output capacity and increase level of integrated system, to solve in extra-high voltage direct-current deicing device up-flow, pressure build-up test system Large Copacity and be fixedly installed in transformer station's requirement; 2), effectively can realize pilot system voltage polyphase number output requirement, the general exportable interchange 24 phase 22V voltage of this system, utilize it can realize extra-high voltage direct-current deicing device and export 12000A DC current; And the general exportable interchange 24 phase 11kV voltage of this system, utilizes it can realize extra-high voltage direct-current deicing device and exports 14kV DC voltage, solve big current and high-voltage test requirement in the debugging of extra-high voltage direct-current deicing device; 3), system can solve that Large Copacity, big current, high voltage, the number of phases are many, equal problems such as pressure, current-sharing, insulation and heat radiation, provide a kind of reliable, economical, effectively up-flow, pressure build-up test system for extra-high voltage direct-current deicing device builds up post debugging.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of extra-high voltage direct-current deicing device up-flow of the present invention, a pressure build-up test system specific embodiment;
Fig. 2 is middle 11kV-24 pulse wave step-up transformer embodiment illustrated in fig. 1 and 22V-24 pulse wave rising current transformer elementary diagram.
Be denoted as in figure:
1---over-current overvoltage protector;
2---multiple phase voltage regulator;
3---up-flow pressure build-up test switch;
4---First pulse wave rising current transformer;
5---second pulse wave rising current transformer;
6---First pulse wave step-up transformer;
7---second pulse wave step-up transformer;
8---rising test pressure-equalizing device;
9---pressure build-up test pressure-equalizing device;
10---trial voltage output branch case.
Embodiment
As can be seen from Figure 1, the present invention has over-current overvoltage protector 1, multiple phase voltage regulator 2, up-flow pressure build-up test switch 3, pulse wave rising current transformer (4, 5), pulse wave step-up transformer (6, 7), rising test pressure-equalizing device (8), pressure build-up test pressure-equalizing device (9) and trial voltage output branch case (10), the over-current overvoltage protector of 10kV is adopted as one embodiment of the present invention over-current overvoltage protector 1, multiple phase voltage regulator 2 adopts the pressure regulator of 10kV-6 phase, pulse wave rising current transformer (4, 5) the pulse wave rising current transformer of two 22V-24 pulse waves is adopted, pulse wave step-up transformer (6, 7) the pulse wave step-up transformer of two 11kV-24 pulse waves is adopted.The input end of the output termination 10kV-6 phase voltage regulator 2 of 10kV over-current overvoltage protector 1.10kV-6 phase voltage regulator 2 output terminal is connected with the input end of up-flow, pressure build-up test switch 3.Up-flow pressure build-up test switch 3 output terminal is connected respectively with the input end of two 22V-24 pulse wave rising current transformers (4,5), two 11kV-24 pulse wave step-up transformers (6,7).The output terminal of two 22V-24 pulse wave rising current transformers (4,5) is connected respectively with the input end of rising test pressure-equalizing device 8.The output terminal of two 11kV-24 pulse wave step-up transformers (6,7) is connected respectively with the input end of pressure build-up test pressure-equalizing device 9.Rising test pressure-equalizing device (8) is connected with the input end of trial voltage output branch case (10) respectively with the output terminal of pressure build-up test pressure-equalizing device (9).
Each parts source that present embodiment uses is: 10kV overcurrent, overvoltage protector 1 adopt commercially available BHQ-10kV type 10kV electric current, voltage protector; 10kV-6 phase voltage regulator 2 adopts commercially available TYQ-6-10kV type 6 phase 10kV pressure regulator; Up-flow, pressure build-up test switch 3 adopt commercially available DLDYQH-10kV type 10kV up-flow or pressure build-up test switch; Two 22V-24 pulse wave rising current transformers (4,5) adopt the BYQ-22V-24 type 24 pulse wave rising current transformer of independent development; Two 11kV-24 pulse wave step-up transformers (6,7) adopt the BYQ-11kV-24 type 24 pulse wave step-up transformer of independent development; Rising test pressure-equalizing device 8 adopts commercially available JYQ-22V-24 type 22V, 24 phase pressure-equalizing devices; Pressure build-up test pressure-equalizing device 9 adopts commercially available JYQ-11kV-24 type 11kV, 24 phase pressure-equalizing devices; Trial voltage output branch case 10 adopts commercially available FZX-24 type 24 phase study voltage output branch case.
Fig. 2 is 11kV-24 pulse wave step-up transformer and 22V-24 pulse wave rising current transformer connection principle in the present invention.This 24 pulse wave transformer connection principle primitive limit is A, B, C three-phase high-voltage winding, secondary is four groups of three-phase low-voltage windings, secondary low pressure winding adopts lengthened triangular structure, respectively phase shift+22.5 ° between each winding ,-22.5 ° ,+7.5 ° ,-7.5 °, form equivalent 24 pulse wave electric voltages to export, transformer can not realize pressure regulation and export, and its pressure regulation is realized by the 10kV-6 phase voltage regulator of input side.
When the present invention works, over-current overvoltage protector provides current limliting and voltage-limiting protection for extra-high voltage deicing device up-flow pressure build-up test system of the present invention.3 phase 10kV AC transformation are that 6 phase 0-15kV exchange output by 6 phase voltage regulators 2.The voltage that 10kV-6 phase voltage regulator 2 exports by up-flow, pressure build-up test switch 3 carries out selecting rear output according to up-flow or pressure build-up test.The voltage step-down that up-flow, pressure build-up test switch 3 export is export after 22V by 22V-24 pulse wave rising current transformer 4 and 5.The boost in voltage that up-flow, pressure build-up test switch 3 export is export after 11kV by 11kV-24 pulse wave step-up transformer 6 and 7.Rising test pressure-equalizing device 8 exports after the voltage that 22V-24 pulse wave rising current transformer 4 and 5 exports all being pressed process.Pressure build-up test pressure-equalizing device 9 exports after the voltage that 11kV-24 pulse wave step-up transformer 6 and 7 exports all being pressed process.Rising test pressure-equalizing device 8 and pressure build-up test pressure-equalizing device 9 output voltage carry out selecting rear output AC 24 phase 22V or 11kV voltage according to up-flow or pressure build-up test by trial voltage output branch case 10.The present invention is that extra-high voltage direct-current deicing device builds up post debugging and provides a kind of reliable, economical, effective up-flow, pressure build-up test system.
Claims (7)
1. an extra-high voltage direct-current deicing device up-flow pressure build-up test system, is characterized in that this system comprises over-current overvoltage protector (1), multiple phase voltage regulator (2), up-flow pressure build-up test switch (3), pulse wave rising current transformer (4, 5), pulse wave step-up transformer (6, 7), rising test pressure-equalizing device (8), pressure build-up test pressure-equalizing device (9) and trial voltage output branch case (10), wherein over-current overvoltage protector (1) exports the input end of multiple phase voltage regulator (2) described in termination, this multiple phase voltage regulator (2) output terminal is connected with the input end of described up-flow pressure build-up test switch (3), this up-flow, pressure build-up test switch 3 output terminal and described pulse wave rising current transformer (4, 5) and the input end of pulse wave step-up transformer (6 and 7) be connected respectively, pulse wave rising current transformer (4, 5) output terminal is connected with the input end of described rising test pressure-equalizing device 8, this pulse wave step-up transformer (6, 7) output terminal is connected with the input end of described pressure build-up test pressure-equalizing device 9, and this rising test pressure-equalizing device (8) is connected with the input end of described trial voltage output branch case (10) respectively with the output terminal of pressure build-up test pressure-equalizing device (9).
2. extra-high voltage direct-current deicing device up-flow pressure build-up test system according to claim 1, is characterized in that described over-current overvoltage protector (1) is for 10kV over-current overvoltage protector.
3. extra-high voltage direct-current deicing device up-flow pressure build-up test system according to claim 1, is characterized in that described multiple phase voltage regulator is 10kV-6 phase voltage regulator.
4. extra-high voltage direct-current deicing device up-flow pressure build-up test system according to claim 1, it is characterized in that described pulse wave rising current transformer has two, pulse wave step-up transformer also has two.
5., according to one of claim 1-4 described extra-high voltage direct-current deicing device up-flow pressure build-up test system, it is characterized in that described pulse wave rising current transformer and pulse wave step-up transformer are respectively 24 pulse wave rising current transformers and 24 pulse wave step-up transformers.
6. extra-high voltage direct-current deicing device up-flow pressure build-up test system according to claim 5, it is characterized in that described 24 pulse wave rising current transformers and 24 pulse wave step-up transformer secondary are four groups of three-phase low-voltage windings, secondary low pressure winding adopts lengthened triangular structure, phase shift+22.5 ° respectively between each winding ,-22.5 ° ,+7.5 ° ,-7.5 °.
7. extra-high voltage direct-current deicing device up-flow pressure build-up test system according to claim 5, is characterized in that described 24 pulse wave rising current transformers are 22V-24 pulse wave rising current transformer, described 24 pulse wave step-up transformers are 11kV-24 pulse wave step-up transformer.
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| CN1848575A (en) * | 2006-03-22 | 2006-10-18 | 国家电网公司 | Line ice-melting method for extra-high voltage DC electric transmission system |
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- 2015-04-10 CN CN201510169606.2A patent/CN104714138B/en active Active
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| CN101383494A (en) * | 2008-10-17 | 2009-03-11 | 南方电网技术研究中心 | DC control protection method for line ice melting of extra-high voltage DC transmission system |
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