750 kV HGIS站隔离开关操作引起的VFTO仿真研究  

Simulation Study on VFTO Caused by Isolating Switchgear Operation in 750 kV HGIS Station

作　　者：张宏伟 ZHANG Hongwei(Jinchang Electric Power Company,Jinchang 737100)

机构地区：[1]国网甘肃省电力公司金昌供电公司,甘肃金昌737100

出　　处：《电力安全技术》2025年第2期28-33,共6页Electric Safety Technology

摘　　要：针对特快速暂态过电压对金属封闭组合电器设备的危害,基于某750 kV变电站75501号A相隔离开关操作工况,对其特快速暂态过电压进行了仿真计算,结果表明,该工况下75501隔离开关上产生的特快速暂态过电压最大幅值达到1626 kV,满足规程规定的绝缘配合安全裕度系数要求。VIn allusion to the damage of GIS caused by every fast transient overvoltage(VFTO),the VFTO of A-phase isolating switchgear 75501 in a 750 kV substation is simulated based on the operation condition of the isolating switchgear.The results show that the maximum amplitude of VFTO generated on the 75501 isolating switchgear under this condition reaches 1626 kV,which meets the insulation coordination safety margin factor requirements specified in the regulations.

关 键 词：超高压设备 金属封闭组合电器 隔离开关 特快速暂态过电压 

分 类 号：TM86[电气工程—高电压与绝缘技术]