CN101995557A - 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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- CN101995557A CN101995557A CN 201010508528 CN201010508528A CN101995557A CN 101995557 A CN101995557 A CN 101995557A CN 201010508528 CN201010508528 CN 201010508528 CN 201010508528 A CN201010508528 A CN 201010508528A CN 101995557 A CN101995557 A CN 101995557A
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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 high-power converter short trouble ability to bear method of testing.
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, a plurality of thyristor element parallel connection in the current transformer, and capacity of short circuit can reach the hundreds of megawatt.So big capacity of short circuit is very big to the big 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 high-power converter short trouble ability to bear method of testing, be divided into and compress high-current test and the single electronic component short-circuit test of high pressure, to solve the problem that prior art can't be tested the high-power converter short trouble.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of high-power converter short trouble ability to bear method of testing 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, and the fault current that obtains high-power converter by the short circuit transformer distributes, and finds out the electronic component of fault current maximum correspondence; Again described electronic component is inserted in the described loop, and remove other electronic components in the described loop, test out the short trouble ability to bear of electronic component under rated voltage and fault peak point current condition of described fault current maximum correspondence.
Described a kind of high-power converter short trouble ability to bear method of testing is characterized in that: in the described short circuit transformer, be implemented in the output of fault current under the low-voltage condition by the leakage reactance that reduces the short circuit transformer.
Described a kind of high-power converter short trouble ability to bear method of testing, it is characterized in that: the electronic component of described fault current maximum correspondence 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.
High-power converter short trouble ability to bear need be tested two aspect contents: the one, and the current transformer 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 present invention is resolved into the short-circuit test of single pipe under low-voltage, high-current test and the high pressure with the short circuit experiment under the total power, and the high-power converter short trouble is carried out on 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 high-power converter short trouble ability to bear method of testing, 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 element of fault current and test cabinet.Owing to adopt the short circuit transformer, its capacity can only just can be finished this experiment for about 1/4 of current transformer capacity.(3) the thyristor element with high-power converter fault current maximum inserts the loop, and all the other thyristor elements are removed, and examines the short trouble ability to bear of this thyristor element under rated voltage and this fault maximum current condition.Because only have an element to insert the loop, power system capacity only is the 1/n to 1/ of former capacity of short circuit (n-1) (n is a parts number in parallel).
Claims (3)
1. high-power converter short trouble ability to bear method of testing, 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, and the fault current that obtains high-power converter by the short circuit transformer distributes, and finds out the electronic component of fault current maximum correspondence; Again described electronic component is inserted in the described loop, and remove other electronic components in the described loop, test out the short trouble ability to bear of electronic component under rated voltage and fault peak point current condition of described fault current maximum correspondence.
2. a kind of high-power converter short trouble ability to bear method of testing according to claim 1 is characterized in that: in the described short circuit transformer, be implemented in the output of fault current under the low-voltage condition by the leakage reactance that reduces the short circuit transformer.
3. a kind of high-power converter short trouble ability to bear method of testing according to claim 1, it is characterized in that: the electronic component of described fault current maximum correspondence 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN101995557A true CN101995557A (en) | 2011-03-30 |
| CN101995557B CN101995557B (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102270925A (en) * | 2011-08-08 | 2011-12-07 | 中国电力科学研究院 | Insulation coordinating method of module unit of modularized multi-level voltage source converter |
| CN103592984A (en) * | 2013-11-19 | 2014-02-19 | 电子科技大学 | Method for decomposing and reconstructing current instantaneous sequence component of triangular connection current transformer |
| CN103605396A (en) * | 2013-11-22 | 2014-02-26 | 苏州汇川技术有限公司 | Converter output current processing circuit and converter output current processing method |
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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 | 上海理工大学 | 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 | 上海理工大学 | 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102270925A (en) * | 2011-08-08 | 2011-12-07 | 中国电力科学研究院 | Insulation coordinating method of module unit of modularized multi-level voltage source converter |
| 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 |
| CN103592984A (en) * | 2013-11-19 | 2014-02-19 | 电子科技大学 | Method for decomposing and reconstructing current instantaneous sequence component of triangular connection current transformer |
| CN103605396A (en) * | 2013-11-22 | 2014-02-26 | 苏州汇川技术有限公司 | Converter output current processing circuit and converter output current processing method |
| 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 |
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| CN101995557B (en) | 2013-04-17 |
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