Scholarlink

Metallic return surge arresters (EM arresters) play a paramount role in suppressing overvoltage during the mode switching process of High Voltage Direct Current (HVDC) systems. Given the complexity of HVDC system operation modes, identifying the worst-case condition for EM surge arrester energy absorption is of significant importance for system overvoltage analysis and insulation coordination. This paper focuses on a canonical 800 kV HVDC system, establishing a simulation model for predicting system overvoltage. It analyzes the dynamic voltage and current responses of EM surge arresters under typical operating conditions, such as HVDC operation mode switching and ground faults, obtaining the waveform characteristics and energy absorption levels of EM surge arresters. The study reveals that EM surge arresters absorb the most energy during single-pole short-circuit faults, which should serve as the basis for selecting and verifying surge arresters. The research contributes to improving the insulation design and operational reliability of HVDC systems, thereby helping to prevent system blackout incidents caused by EM surge arrester failures.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Analysis of Worst-Case Energy Absorption by EM Arrester in ± 800kV HVDC System

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Wei Li,
  • Tao Liang,
  • Ziqian Yin,
  • Sen Wang,
  • Yanhua Han,
  • Mingxi Zhu,
  • Yaru Mu,
  • Jie Guo,
  • Yan-zhao Xie

摘要

Metallic return surge arresters (EM arresters) play a paramount role in suppressing overvoltage during the mode switching process of High Voltage Direct Current (HVDC) systems. Given the complexity of HVDC system operation modes, identifying the worst-case condition for EM surge arrester energy absorption is of significant importance for system overvoltage analysis and insulation coordination. This paper focuses on a canonical 800 kV HVDC system, establishing a simulation model for predicting system overvoltage. It analyzes the dynamic voltage and current responses of EM surge arresters under typical operating conditions, such as HVDC operation mode switching and ground faults, obtaining the waveform characteristics and energy absorption levels of EM surge arresters. The study reveals that EM surge arresters absorb the most energy during single-pole short-circuit faults, which should serve as the basis for selecting and verifying surge arresters. The research contributes to improving the insulation design and operational reliability of HVDC systems, thereby helping to prevent system blackout incidents caused by EM surge arrester failures.