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Operation synthesis tester for ultrahigh voltage direct current converter valve

An ultra-high voltage DC and synthetic test technology, which is applied in circuit breaker testing and other directions, can solve the problems of lack of analysis methods and test devices, large gap in test level, and late start of high-power power electronic test technology, and achieves low control difficulty. , Economical effect

Inactive Publication Date: 2014-04-23
SHANGHAI JIAO TONG UNIV
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  • Description
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Problems solved by technology

my country's high-power power electronics test technology started late, and the research lacked effective analysis methods and test devices, resulting in insufficient technology research and development capabilities and high-power test capabilities in this field in my country, and a large gap with foreign countries' test levels

Method used

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  • Operation synthesis tester for ultrahigh voltage direct current converter valve
  • Operation synthesis tester for ultrahigh voltage direct current converter valve
  • Operation synthesis tester for ultrahigh voltage direct current converter valve

Examples

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Embodiment

[0024] like figure 1 As shown, a UHV DC converter valve operation synthesis test device includes a 12-pulse converter circuit 1 connected to each other, a high voltage circuit 3 and a high current circuit 2, and the high voltage circuit 3 Provide reverse recovery voltage and forward voltage for the valve to be tested, the high current circuit 2 provides a large current for the valve to be tested, and the 12-pulse converter circuit 1 provides the required high voltage for the valve to be tested voltage, fault overcurrent and DC intermittent current.

[0025] The 12-pulse converter circuit 1 is composed of two 6-pulse rectifier bridges in series, which is the same as the converter unit used in the UHV DC transmission project. Each 6-pulse rectifier bridge is connected to a group of transformers, one of which is One group is a Y / Y connection transformer, and the other group is a Y / Δ connection transformer. The valve to be tested is installed on the bridge arm of the rectifier br...

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Abstract

The invention relates to an operation synthesis tester for an ultrahigh voltage direct current converter valve, which comprises a 12-pulse wave converter loop, a high voltage loop and a large current loop which are connected two by two, wherein the ultrahigh voltage loop provides a reverse restore voltage and a positive voltage for a valve to be tested; the large current loop provides a large current for flowing the valve to be tested; the 12-pulse wave converter loop provides high voltage, fault overcurrent and direct current intermittent current needed by the valve to be tested. Compared with the prior art, the operation synthesis tester for the ultrahigh voltage direct current converter valve has the advantages of good equivalence, wide applicable range, good economy, high test precision and the like.

Description

technical field [0001] The invention relates to a test technology for an ultra-high voltage direct current converter valve, in particular to an operation synthesis test device for an ultra-high voltage direct current converter valve. Background technique [0002] The distribution of energy resources and electricity loads in my country is extremely unbalanced, and the reverse allocation of energy resources and electricity loads in the east and west determines the necessity of optimizing the allocation of primary energy resources on a large scale in my country. Due to its technical characteristics, DC transmission is especially suitable for large-capacity and long-distance transmission, so the construction of DC transmission projects is very conducive to the optimal allocation of resources. With the development of national networking and west-to-east power transmission, ultra-high voltage direct current transmission projects and direct current back-to-back connection projects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
Inventor 吴振跃鲁成栋肖登明谭东现邓云坤
Owner SHANGHAI JIAO TONG UNIV
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