Temperature Distribution Simulation of IGCT Considering the Actual Operating Conditions of Mechanical DC Circuit Breakers

HUANG Shiyang; PENG Zhaowei; KANG Zizhang; LI Yamei; SUN Hao; XU Dangguo; WANG Weicheng; NING Linru

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Temperature Distribution Simulation of IGCT Considering the Actual Operating Conditions of Mechanical DC Circuit Breakers

更新时间：2025-06-18

- Temperature Distribution Simulation of IGCT Considering the Actual Operating Conditions of Mechanical DC Circuit Breakers
- High Voltage Apparatus Pages: 1-13(2025)
- 作者机构：
  
  1.国网冀北电力有限公司电力科学研究院，北京　 100045
  2.西安交通大学电气工程学院，西安　 710049
- 作者简介：
- 基金信息：
  
  State Grid Jibei Electric Power Co., Ltd. Project (Improvement of CRRC IGCT Aging Experimental Detection Technology at Fukang Station)
- DOI：
  CLC：
- Published：
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HUANG Shiyang, PENG Zhaowei, KANG Zizhang, et al. Temperature Distribution Simulation of IGCT Considering the Actual Operating Conditions of Mechanical DC Circuit Breakers[J/OL]. High voltage apparatus, 2025, 1-13.
DOI：

HUANG Shiyang, PENG Zhaowei, KANG Zizhang, et al. Temperature Distribution Simulation of IGCT Considering the Actual Operating Conditions of Mechanical DC Circuit Breakers[J/OL]. High voltage apparatus, 2025, 1-13. DOI：

摘要

机械式直流断路器是柔性直流电网直流故障清除的重要手段，集成门极换流晶闸管（integrated gate commutated thyristor，IGCT）是机械式直流断路器的核心元件之一。在机械式直流断路器开断过程中，IGCT器件承受振荡衰减的浪涌电流。针对IGCT器件在机械式直流断路器开断过程中的温度分布，文中首先建立机械式直流断路器电路仿真模型，获取开断过程中IGCT器件承受的电流波形，然后建立IGCT电热耦合模型，研究了实际工况下的IGCT器件温度分布特性。研究结果表明在断路器开断过程中IGCT芯片阴极电极边沿处区域具有最高的温度和电流密度，为机械式直流断路器可靠性评估奠定了基础。

Abstract

Mechanical DC circuit breaker is a key technology of DC fault removal in flexible DC power grid

and integrated gate commutated thyristor (IGCT) is one of the core components of mechanical DC circuit breaker. During the switching of a mechanical DC circuit breaker

the IGCT device is subjected to an oscillation-attenuated surge current. In view of the temperature distribution of IGCT devices during the breaking process of mechanical DC circuit breakers

this paper first establishes a circuit simulation model of mechanical DC circuit breakers to obtain the current waveform of IGCT devices during the breaking process

and then establishes an IGCT electro-thermal coupling model to study the temperature distribution characteristics of IGCT devices under actual working conditions. The results show that the edge area of the cathode in IGCT chip has the highest temperature and current density

which lays a foundation for the reliability evaluation of mechanical DC circuit breakers.

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references

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