TSC高压晶闸管阀过电流失效机理

HE Zhiyuan; TANG Guangfu; DENG Zhanfeng; ZHENG Jianchao

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TSC高压晶闸管阀过电流失效机理

更新时间：2025-08-13

- TSC高压晶闸管阀过电流失效机理
- Automation of Electric Power Systems Vol. 31, Issue 13, Pages: 23-28(2007)
- 作者机构：
  
  中国电力科学研究院,北京市,100085
- 作者简介：
- 基金信息：
- DOI：
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- Published：2007
- 稿件说明：
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HE Zhiyuan, TANG Guangfu, DENG Zhanfeng, et al. [J]. Automation of electric power systems, 2007, 31(13): 23-28.
DOI：

HE Zhiyuan, TANG Guangfu, DENG Zhanfeng, et al. [J]. Automation of electric power systems, 2007, 31(13): 23-28. DOI：

摘要

为满足晶闸管投切电容器（TSC）装置可靠性及其试验方法和试验等效机理研究的需要，重点研究了TSC装置的核心部件———高压晶闸管阀在过电流故障状态下的失效机理。首先介绍了TSC系统及其阀的结构以及过电流故障形成的原因和特征，并给出了过电流的数学方程和仿真波形。然后按照过电流故障的不同发展阶段对TSC阀的电流、电压和热等应力进行了解析分析。在上述基础上，结合器件的物理特性，对TSC阀各个元件在各种故障应力下的内部物理过程进行了分析。最终得到了TSC阀在过电流故障的不同发展阶段的失效模式和失效指标，从而揭示了TSC高压晶闸管阀的过电流失效机理。

Abstract

For studying the reliability， testing methods and the mechanism of thyristor switched capacitor（TSC）， the over-current failure of high voltage thyristor valve， which is the core component of TSC， is analyzed. Firstly， the configuration of the TSC and its thyristor valve is described; the over-current fault is examined; the waveform and its analysis representation are given. Then， based on the different development stages of TSC over-current fault， the voltage， current and thermal stresses on valve is expounded， the expression of each stress is inferred; the inner physical processes of the TSC valve under variable stresses are expounded. Finally， the failure modes and failure indexes of TSC valve on different over-current stages are obtained， thus the failure mechanism of TSC high voltage thyristor valve over-current is revealed.

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