Converter valve submodule automatic test system and thyristor test circuit thereof

An automatic test system, thyristor testing technology, applied in the direction of measuring electricity, measuring electrical variables, testing of single semiconductor devices, etc., can solve the problem of inability to bypass thyristor detection of sub-modules

Active Publication Date: 2014-03-19
XJ ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an automatic test system for the sub-module of the flexible direct current transmission converter valve and its thyristor test circuit to solve the problem that the sub-module bypass thyristor cannot be detected in the prior art

Method used

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  • Converter valve submodule automatic test system and thyristor test circuit thereof
  • Converter valve submodule automatic test system and thyristor test circuit thereof
  • Converter valve submodule automatic test system and thyristor test circuit thereof

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] Example of test system

[0016] Such as figure 2 , 3 As shown, the flexible HVDC converter valve sub-module automatic test system includes a control system and a test circuit. The control system is used to connect the corresponding power line and communication line with the sub-module to be tested. The control system includes a background computer, which is used to release The test instructions and the control system belong to the prior art, and will not be introduced in detail here.

[0017] In order to test the thyristor, the test circuit includes a thyristor test circuit, the thyristor test circuit includes a direct current power supply DC, a current limiting resistor R, an energy storage capacitor C, a current limiting inductor L, a freewheeling diode D C And the terminal for connecting the sub-module of the converter valve, the DC power supply...

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PUM

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Abstract

The invention relates to a converter valve submodule automatic test system and a thyristor test circuit thereof. The converter valve submodule automatic test system comprises a control system and the thyristor test circuit. The thyristor test circuit comprises a direct current power source (DC), a current-limiting resistor (R), an energy-storage capacitor (C), a current-limiting inductor (L), a control switch (K), a fly-wheel diode (DC) and a wiring terminal for connecting converter valve submodules. The thyristor test circuit is capable of directly testing thyristors.

Description

technical field [0001] The invention relates to an automatic test system for a sub-module of a flexible DC transmission converter valve and a thyristor test circuit thereof. Background technique [0002] The topology of the main circuit of the multi-level VSC-HVDC flexible direct current transmission converter valve is formed by 6n sub-modules SM, and each bridge arm is composed of n sub-modules connected in series. Such as figure 1 The sub-module shown is a half-bridge sub-module, including two IGBTs, capacitors, thyristors, and bypass switches. Usually, a flexible HVDC converter valve project includes thousands of sub-modules. During the production of converter valves, an enterprise needs to conduct a comprehensive inspection of the performance of each sub-module. If it is manually tested, it needs to be wired and debugged separately, which is time-consuming and laborious. With automatic testing, the workload can be reduced, but the sub-module bypass thyristors cannot be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R31/26
Inventor 刘刚姚钊夏克鹏王鸿飞孙健
Owner XJ ELECTRIC
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