Analysis on the Turn-off Electrical Stress of High Voltage Power Thyristor Valve

LI Jiangtao; GU Yue; REN Ziyuan; CAO Hui; ZHENG Minjun; ZHAO Zheng; LI Tao; LI Zheng; WANG Lin; LI Guojun

doi:10.13296/j.1001-1609.hva.2018.07.028

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Analysis on the Turn-off Electrical Stress of High Voltage Power Thyristor Valve

更新时间：2025-04-26

- Analysis on the Turn-off Electrical Stress of High Voltage Power Thyristor Valve
- High VoltageApparatus Vol. 54, Issue 7, Pages: 206-210(2018)
- 作者机构：
  
  1. 西安交通大学电气工程学院
  2. 华东电力设计院有限公司
  3. 中国电力科学研究院
  4. 国网上海电力公司市南供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.07.028
  CLC： TM461.4
- Published：2018
- 稿件说明：
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[1]李江涛,顾悦,任子媛,曹辉,郑敏军,赵政,李涛,李征,王琳,李国骏.高压大功率晶闸管阀关断的电应力分析[J].高压电器,2018,54(07):206-210.

LI Jiangtao, GU Yue, REN Ziyuan, et al. Analysis on the Turn-off Electrical Stress of High Voltage Power Thyristor Valve[J]. High voltageapparatus, 2018, 54(7): 206-210.
[1]李江涛,顾悦,任子媛,曹辉,郑敏军,赵政,李涛,李征,王琳,李国骏.高压大功率晶闸管阀关断的电应力分析[J].高压电器,2018,54(07):206-210. DOI： 10.13296/j.1001-1609.hva.2018.07.028.

LI Jiangtao, GU Yue, REN Ziyuan, et al. Analysis on the Turn-off Electrical Stress of High Voltage Power Thyristor Valve[J]. High voltageapparatus, 2018, 54(7): 206-210. DOI： 10.13296/j.1001-1609.hva.2018.07.028.

摘要

由高压大功率晶闸管关断引起的电压应力和电流应力是研究晶闸管电气特性的重要内容。在PSCAD/EMTDC

MATLAB-Simulink等仿真软件中

晶闸管模型是一个理想模型

然而实际上换相关断过程会影响晶闸管的暂态性能。基于常用的晶闸管关断电流指数模型

文中以晶闸管5STP34Q5200为例

介绍了基于MATLAB-Simulink的一个实用仿真模型。该晶闸管关断模型考虑了反向恢复电流和电荷的影响

且在直流测试电路中得以验证。此外

文中详尽讨论了正向电流幅值、电流变化率和缓冲回路参数对晶闸管关断电应力的影响

并最终验证了文中所介绍的仿真法对高压大功率晶闸管关断电应力的研究具有一定的有效性。

Abstract

The voltage stress and current stress caused by turn-off process of high voltage power thyristor are two im-portant research focuses on its electric characteristics. The thyristor models in some programs

such as PSCAD/EMT-DC and MATLAB-Simulink

are ideal models

however the turn-off process influences the transient characteristicsof thyristor. Based on common-used exponential model of turn-off current

taking the thyristor 5 STP34 Q5200 for ex-ample

this paper introduces a practical simulation model in detail by utilizing MATLAB-Simulink. This thyristorturn-off model took the influence of the reverse recovery current and electric charges into consideration and is veri-fied in DC testing circuits in product manual. Furthermore

the interference to the turn-off electrical stress on high-voltage power thyristor caused by forward current

changing rate of current

and snubber circuit parameters are dis-cussed in detail. It is concluded that the simulation method is useful for the analysis of the turn-off electrical stress onthyristor.

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