CN203299303U - Device for performing full load test of high-capacity static var generator without direction application of distribution network - Google Patents
Device for performing full load test of high-capacity static var generator without direction application of distribution network Download PDFInfo
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- CN203299303U CN203299303U CN2013203231742U CN201320323174U CN203299303U CN 203299303 U CN203299303 U CN 203299303U CN 2013203231742 U CN2013203231742 U CN 2013203231742U CN 201320323174 U CN201320323174 U CN 201320323174U CN 203299303 U CN203299303 U CN 203299303U
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Abstract
The utility model discloses a device for performing full load test of a high-capacity static var generator without direction application of distribution network. A full load test method of a static var generator (SVG) comprises the following steps: 1) charging test accompanying SVG equipment; 2) charging tested SVG equipment through the test accompanying SVG equipment; and 3) controlling one of the test accompanying SVG equipment and the tested SVG equipment to perform inductive reactive power and controlling the other to perform capacitive reactive power to realize power hedge. The device mainly comprises a multi-winding transformer, multiple groups of rectifier circuits, the test accompanying SVG equipment and the tested SVG equipment, wherein at the charging stage, the primary input of the multi-winding transformer is connected to a power supply system, the secondary output of the multi-winding transformer is connected to the input ends of the multiple groups of rectifier circuits, and the output end of each group of rectifier circuits is connected to a direct current busbar of a power unit of the test accompanying SVG equipment; and at the test stage, the output ends of the test accompanying SVG equipment and the tested SVG equipment are connected in parallel. The device disclosed by the utility model is convenient for wiring in the test and small in rectification input volume, a low-power quick plug with low cost can be adopted to save a large amount of test time and realize mass production conveniently.
Description
Technical field
The present invention relates to field of power electronics, be specifically related to a kind of power equipment method of testing and device.
Background technology
Along with static reactive and harmonic decrease devices SVG(Static Var Generator) the reaching its maturity of technology and market, how to strengthen the problem that the ability of manufacturing SVG is the domestic manufacturers are thinking, project team in the SVG delivery test, rated voltage, the pilot project of rated power is the performance of inspection machine effectively, pilot project can improve the reliability and stability of equipment fully, once putting into operation successfully and stable operation while arriving curstomer`s site with assurance equipment.It is exactly that single-machine capacity is large, rated voltage is high that but SVG equipment has common characteristics, send whole be reactive power or harmonic wave, if want, complete machine is simulated to actual work fully, requirement to pilot system and net capacity is all very high, to manufacturing enterprise, is also a very huge fund input in addition.
Adopting at present the most general test method is to overlap the SVG device of same capabilities to dragging with two, one is sent perceptual idle, another one is sent capacitive reactive power, two complete equipments realize that power is to mending, idle impact on system is very little, this mode is a kind of test method of low power consuming in theory, and not high to the capacity requirement of system, it is very little that power system capacity can be done.Can not be fully equal in the control output power but actual situation is two complete equipments, capacity to system has a capacity requirement, to the electric pressure requirement of system side, be also to determine according to the rated voltage of tested device in addition, for example test the equipment of 10kV, power supply is necessary for 10kV, and the device power supply (DPS) of test 35kV must be 35kV.Generally to carry out voltage transformation by transformer, the impedance meeting of transformer exerts an influence to test, the be put to the test impact of equipment generation power of the secondary voltage of transformer is very large, the power supply characteristic that is the transformer generation is very soft, while sending capacitive, voltage can be elevated a lot, and what while sending perception, voltage was drawn is very low.
Summary of the invention
The objective of the invention is the deficiency that exists for existing SVG device to test, provide a kind of electrical network that directly do not utilize to carry out large capacity reactive compensation device SVG full-load test method and apparatus.
A kind of electrical network that directly do not utilize carries out large capacity reactive compensation device full-load test method:
1) for accompanying examination SVG equipment charge;
2) accompanying examination SVG equipment is tested SVG equipment charge;
3) control examination SVG equipment and the tested SVG equipment of accompanying, one is sent perceptual idlely, and another sends capacitive reactive power, realizes that power liquidates.
Realize the device of said method: mainly comprise multiwinding transformer, organize rectification circuit more, accompany examination SVG equipment and tested SVG equipment, in the charging stage, the elementary input of multiwinding transformer connects electric power system, secondary output connects many group rectification circuit input ends, and every group of rectification circuit output end connects the DC bus of a power cell of accompanying examination SVG equipment; At test phase, accompany examination SVG equipment in parallel with the output terminal of tested SVG equipment.
Concrete, multiwinding transformer is the three-phase winding transformer, rectification circuit is not control rectifying circuit of three phase full bridge, accompanies every circuitry phase in the three-phase circuit that tries SVG equipment a plurality of power cells to be arranged, cascading between power cell.
Under the occasion that the present invention can be low at the prime input supply voltage, capacity is very little, realize the full-load test of two SVG, by multiwinding transformer, convert supply voltage to many groups fixing voltage, each organizes the complete electrical isolation between voltage.
Compared with prior art the present invention has following obvious advantage:
1, power supply of the present invention can be low pressure 380V system, can be also the experimental system of other electric pressures, to system voltage, requires low, applied widely.
2, in test method of the present invention the amount of capacity of tested device to power system capacity require lowly, power system capacity may diminish to 20kVA-50kVA, to the construction of whole pilot system, can expense be compressed to minimum.
3, it is compatible that test method of the present invention can have to the equipment of various electric pressures and various capacity test, and namely the test battery system can realize the full-load test of 0.4kV-35kV equipment.
4, this test method is a kind of energy-conservation method, and in the overall test process, loss is lower than 0.8% of the overall test capacity.
In a word, test connection of the present invention is convenient, and the rectification input capacity is little, can adopt cheap miniwatt quick plug, can save a large amount of test periods, conveniently realizes large-scale production.
The accompanying drawing explanation
Fig. 1 is transformer, rectification unit and the three phase units connection layout of accompanying test-run a machine;
Fig. 2 is the connection diagram of power cell and rectification circuit;
Fig. 3 is the connected system figure of two tested devices;
In figure, the input of 11-primary, the output of 12-transformer secondary output, 21-rectification circuit, 3-are accompanied examination SVG equipment, 31-power cell, 3A-accompanies the A phase power cell of examination SVG equipment, and 3B-accompanies the B phase power cell of examination SVG equipment, and 3C-accompanies the C phase power cell of examination SVG equipment, the tested SVG equipment of 4-, the A phase power cell of the tested SVG equipment of 4A-, the B phase power cell of the tested SVG equipment of 4B-, the C phase power cell of the tested SVG equipment of 4C-, the 5-out put reactor, the 6-splicing ear.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing explanation and embodiment.
a kind of electrical network that directly do not utilize carries out large capacity reactive compensation device full-load test device, mainly comprise multiwinding transformer, many group rectification circuits 21, accompany examination SVG equipment 3 and tested SVG equipment 4, multiwinding transformer is the three-phase winding transformer, rectification circuit 21 is not control rectifying circuit of three phase full bridge, in the charging stage, the elementary input 11 of multiwinding transformer connects electric power system, transformer secondary output output 12 connects many group rectification circuits 21 input ends, every group of rectification circuit 21 output terminals connect the DC bus of a power cell 31 of accompanying examination SVG equipment 3, accompany every circuitry phase in the three-phase circuit that tries SVG equipment 4 that a plurality of power cells 31 are arranged, cascading between power cell 31, at test phase, accompany examination SVG equipment 3 in parallel with the output terminal of tested SVG equipment 4.
A kind of electrical network that directly do not utilize carries out large capacity reactive compensation device full-load test method:
1. for accompanying 3 chargings of examination SVG equipment;
the many groups of each three phase winding access three phase full bridge in the secondary winding of multiwinding transformer is control rectifying circuit not, secondary output 12 AC rectification of multiwinding transformer are become to direct supply, DC voltage after rectification is about 900V, the DC bus of each power cell of examination equipment is accompanied in access, accompany examination equipment to be divided into independently three-phase, every have a plurality of power cells 31 mutually, the synthetic high pressure of cascaded series between power cell 31, the DC bus-bar voltage of each power cell 31 is independently, when rectification access unit bus, note the correspondence of access order and unit number.
2. accompany examination SVG equipment 3 to be tested SVG equipment 4 chargings;
in the unit busbar voltage of accompanying examination equipment after rectification circuit charging completes, on cable is connected to by the output of test-run a machine, accompany the A phase power cell 3A of examination SVG equipment to connect successively out put reactor 5, splicing ear 6, the A phase power cell 4A of out put reactor 5 and tested SVG equipment, accompany the B phase power cell 3B of examination SVG equipment to connect successively out put reactor 5, splicing ear 6, the B phase power cell 4C of out put reactor 5 and tested SVG equipment, accompany the C phase power cell 3C of examination SVG equipment to connect successively out put reactor 5, splicing ear 6, the C phase power cell 4C of out put reactor 5 and tested SVG equipment, this moment is through the effect of control signal, the energy of the output by accompanying test-run a machine, to be elevated to setting value by the busbar voltage of test-run a machine.
3. control that to accompany examination SVG equipment 3 and 4, one of tested SVG equipment to send perception idle, another sends capacitive reactive power, realizes that power liquidates.
After the bus voltage value of each unit of accompanying examination equipment and tested device reaches setting value, have control signal control two equipment wherein one to send perception idle, other one is sent capacitive reactive power, realize that power liquidates, reach the full-load run of tested device, and then reach the fully loaded aging purpose of complete machine.
Claims (4)
1. directly do not utilize electrical network to carry out the device of large capacity reactive compensation device full-load test: mainly to comprise multiwinding transformer, organize rectification circuit more, accompany examination SVG equipment and tested SVG equipment, it is characterized in that: in the charging stage, the elementary input of multiwinding transformer connects electric power system, secondary output connects many group rectification circuit input ends, and every group of rectification circuit output end connects the DC bus of a power cell of accompanying examination SVG equipment; At test phase, accompany examination SVG equipment in parallel with the output terminal of tested SVG equipment.
2. the device that does not directly utilize electrical network to carry out large capacity reactive compensation device full-load test according to claim 1, it is characterized in that: described multiwinding transformer is the three-phase winding transformer.
3. the device that does not directly utilize electrical network to carry out large capacity reactive compensation device full-load test according to claim 1, it is characterized in that: described rectification circuit is not control rectifying circuit of three phase full bridge.
4. the device that does not directly utilize electrical network to carry out large capacity reactive compensation device full-load test according to claim 1 is characterized in that: in described three-phase circuit of accompanying examination SVG equipment, every circuitry phase has a plurality of power cells, cascading between described power cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203231742U CN203299303U (en) | 2013-06-06 | 2013-06-06 | Device for performing full load test of high-capacity static var generator without direction application of distribution network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203231742U CN203299303U (en) | 2013-06-06 | 2013-06-06 | Device for performing full load test of high-capacity static var generator without direction application of distribution network |
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| CN203299303U true CN203299303U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203231742U Expired - Fee Related CN203299303U (en) | 2013-06-06 | 2013-06-06 | Device for performing full load test of high-capacity static var generator without direction application of distribution network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535564A (en) * | 2018-04-04 | 2018-09-14 | 南方电网科学研究院有限责任公司 | Control method of rapid bypass series compensation equipment of high-voltage direct-current system |
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2013
- 2013-06-06 CN CN2013203231742U patent/CN203299303U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535564A (en) * | 2018-04-04 | 2018-09-14 | 南方电网科学研究院有限责任公司 | Control method of rapid bypass series compensation equipment of high-voltage direct-current system |
| CN108535564B (en) * | 2018-04-04 | 2023-11-07 | 南方电网科学研究院有限责任公司 | Control method for rapid bypass series compensation equipment of high-voltage direct current system |
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| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20140606 |