CN101995557B - Method for testing bearing capability of short trouble in high-power converter - Google Patents
Method for testing bearing capability of short trouble in high-power converter Download PDFInfo
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- CN101995557B CN101995557B CN 201010508528 CN201010508528A CN101995557B CN 101995557 B CN101995557 B CN 101995557B CN 201010508528 CN201010508528 CN 201010508528 CN 201010508528 A CN201010508528 A CN 201010508528A CN 101995557 B CN101995557 B CN 101995557B
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- short circuit
- bearing capability
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Abstract
The invention discloses a method for testing the bearing capability of short trouble in a high-power converter. In the method, short-circuit experiments under full power are divided into low-voltage and heavy-current experiments and short-circuit experiments of a single tube under rated voltage. In the method, on the premise of realizing the bearing capability of the short trouble in the high-power converter, the power of experiment platforms is reduced greatly, so the impact on power grids and system cost are reduced, and the testing on the bearing capability of the short trouble in the high-power converter becomes feasible.
Description
Technical field
The present invention relates to electron and electrician, power technology field, especially electrical circuitry equipment fault ability to bear method of testing is specially a kind of method for testing bearing capability of short trouble in high-power converter.
Background technology
High-power converter is a kind of important electrical equipment in the commercial production, in aluminium electroloysis, is widely used in chemical industry and the nuclear fusion experimental device.At present, the power of high-power converter can reach 90MW, and a plurality of Thyristors are in parallel in the current transformer, and capacity of short circuit can reach the hundreds of megawatt.So large capacity of short circuit is very large to the large impact of electrical network generation.At present, the domestic shaped device that does not still have to carry out high-power converter the test of short trouble ability to bear.
Summary of the invention
The purpose of this invention is to provide a kind of method for testing bearing capability of short trouble in high-power converter, be divided into and compress high-current test and high pressure Single Electron element short-circuit test, the problem that can't test the high-power converter short trouble to solve prior art.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of method for testing bearing capability of short trouble in high-power converter is characterized in that: the short trouble peak point current of simulation calculation high-power converter in computing machine, select the suitable short circuit transformer of parameter according to the short trouble peak point current that calculates; The load of short circuit transformer and high-power converter is electrically connected to form the loop with the described high-power converter of short circuit, obtains the fault current distribution of high-power converter by the short circuit transformer, and find out electronic component corresponding to fault current maximum; Again described electronic component is accessed in the described loop, and remove other electronic components in the described loop, test out the short trouble ability to bear of electronic component corresponding to described fault current maximum under rated voltage and fault peak point current condition.
Described a kind of method for testing bearing capability of short trouble in high-power converter is characterized in that: in the described short circuit transformer, realize the output of fault current under the low-voltage condition by the leakage reactance that reduces the short circuit transformer.
Described a kind of method for testing bearing capability of short trouble in high-power converter, it is characterized in that: the electronic component that described fault current maximum is corresponding can be single independently electronic component, also can be a plurality of independently electronic components parallel with one another in the same parallel branch, perhaps be all electronic components in the non-parallel branch.
Bearing capability of short trouble in high-power converter need to be tested two aspects: the one, and converter cabinet bears short trouble, and the 2nd, electronic component bears the fault peak point current and does not damage under rated voltage in the converter cabinet.The short-circuit test of single pipe under low-voltage, high-current test and the high pressure is resolved into the short circuit experiment under the total power in the present invention, and the high-power converter short trouble is carried out at the miniwatt experiment porch by the method for emulation and simulation.
Description of drawings
Fig. 1 is the inventive method FB(flow block).
Embodiment
As shown in Figure 1.A kind of method for testing bearing capability of short trouble in high-power converter, its step is as follows: (1) Computer Simulation is also calculated high-power converter short trouble peak point current.(2) the high-power converter load is connected on the short circuit transformer side, the short circuit high-power converter draws fault current and measures the most serious Thyristor of fault current and test cabinet.Owing to adopting the short circuit transformer, its capacity can only just can be finished this experiment for about 1/4 of Converter Capacity.(3) with the Thyristor access loop of high-power converter fault current maximum, all the other Thyristors are removed, and examine the short trouble ability to bear of this Thyristor under rated voltage and this fault maximum current condition.Because an element access loop is only arranged, and power system capacity only is the 1/n to 1/ of former capacity of short circuit (n-1) (n is parts number in parallel).
Claims (3)
1. method for testing bearing capability of short trouble in high-power converter, it is characterized in that: the short trouble peak point current of simulation calculation high-power converter in computing machine, select the suitable short circuit transformer of parameter according to the short trouble peak point current that calculates; The load of short circuit transformer and high-power converter is electrically connected to form the loop with the described high-power converter of short circuit, obtains the fault current distribution of high-power converter by the short circuit transformer, and find out electronic component corresponding to fault current maximum; Again described electronic component is accessed in the described loop, and remove other electronic components in the described loop, test out the short trouble ability to bear of electronic component corresponding to described fault current maximum under rated voltage and fault peak point current condition.
2. a kind of method for testing bearing capability of short trouble in high-power converter according to claim 1 is characterized in that: in the described short circuit transformer, realize the output of fault current under the low-voltage condition by the leakage reactance that reduces the short circuit transformer.
3. a kind of method for testing bearing capability of short trouble in high-power converter according to claim 1, it is characterized in that: electronic component corresponding to described fault current maximum is single independently electronic component, or a plurality of independently electronic components parallel with one another in the same parallel branch, perhaps be all electronic components in the non-parallel branch.
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CN 201010508528 CN101995557B (en) | 2010-10-14 | 2010-10-14 | Method for testing bearing capability of short trouble in high-power converter |
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CN 201010508528 CN101995557B (en) | 2010-10-14 | 2010-10-14 | Method for testing bearing capability of short trouble in high-power converter |
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CN101995557A CN101995557A (en) | 2011-03-30 |
CN101995557B true CN101995557B (en) | 2013-04-17 |
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CN 201010508528 Expired - Fee Related CN101995557B (en) | 2010-10-14 | 2010-10-14 | Method for testing bearing capability of short trouble in high-power converter |
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Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102270925B (en) * | 2011-08-08 | 2014-02-12 | 中国电力科学研究院 | Insulation coordinating method of module unit of modularized multi-level voltage source converter |
CN103592984B (en) * | 2013-11-19 | 2015-05-27 | 电子科技大学 | Method for decomposing and reconstructing current instantaneous sequence component of triangular connection current transformer |
CN103605396B (en) * | 2013-11-22 | 2015-12-09 | 苏州汇川技术有限公司 | Output current of converter treatment circuit and method |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US5631816A (en) * | 1994-07-18 | 1997-05-20 | Siemens Aktiengesellschaft | DC voltage converter with current limitation |
CN1480737A (en) * | 2003-07-22 | 2004-03-10 | �Ϻ���ͨ��ѧ | Integrated intelligent testing system for large power convertor assembly |
CN1508930A (en) * | 2002-12-19 | 2004-06-30 | 中国科学院电工研究所 | Fault current limiting circuit |
CN101216523A (en) * | 2007-12-28 | 2008-07-09 | 华北电力大学 | Substation grounding net defect diagnostic method and apparatus |
CN101566672A (en) * | 2009-06-01 | 2009-10-28 | 浙江海得新能源有限公司 | Fall-down experimental method of simulating power grid |
CN101752873A (en) * | 2010-01-25 | 2010-06-23 | 株洲变流技术国家工程研究中心有限公司 | Protection method of DC electricity transmission high-voltage convertor station |
CN101800510A (en) * | 2009-02-10 | 2010-08-11 | 株式会社日立制作所 | Wind generator system |
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2010
- 2010-10-14 CN CN 201010508528 patent/CN101995557B/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5631816A (en) * | 1994-07-18 | 1997-05-20 | Siemens Aktiengesellschaft | DC voltage converter with current limitation |
CN1508930A (en) * | 2002-12-19 | 2004-06-30 | 中国科学院电工研究所 | Fault current limiting circuit |
CN1480737A (en) * | 2003-07-22 | 2004-03-10 | �Ϻ���ͨ��ѧ | Integrated intelligent testing system for large power convertor assembly |
CN101216523A (en) * | 2007-12-28 | 2008-07-09 | 华北电力大学 | Substation grounding net defect diagnostic method and apparatus |
CN101800510A (en) * | 2009-02-10 | 2010-08-11 | 株式会社日立制作所 | Wind generator system |
CN101566672A (en) * | 2009-06-01 | 2009-10-28 | 浙江海得新能源有限公司 | Fall-down experimental method of simulating power grid |
CN101752873A (en) * | 2010-01-25 | 2010-06-23 | 株洲变流技术国家工程研究中心有限公司 | Protection method of DC electricity transmission high-voltage convertor station |
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