长电缆分布电容导致保护回路误动分析  

Analysis on the Protection Mal-operation due to Distributed Capacitance of Long Cables

作　　者：王永卫[1] 杨艳平[1] 梁绍泉[1] WANG Yongwei;YANG Yanping;LIANG Shaoquan(Shandong Taishan Pumped Storage Power Station Co.,Ltd.,Taian 271000)

机构地区：[1]山东泰山抽水蓄能电站有限责任公司,山东泰安271000

出　　处：《电力安全技术》2023年第6期29-31,共3页Electric Safety Technology

摘　　要：通过某抽水蓄能电站在静止变频器改造过程中出现的保护跳闸事件进行分析,查找出该事件为保护跳闸回路长电缆分布电容较大所引起,同时提出针对性的防范措施以保障设备安全稳定运行。By analysis on a protection trip event during the transformation of a static frequency converter in a pumped storage power station,it is find out that the event is caused by the large distributed capacitance of the long cables of the trip circuit,and the corresponding preventive measures are proposed to ensure the safe and stable operation of the equipment.

关 键 词：抽水蓄能电站 长电缆 分布电容 保护误动 

分 类 号：TM246[一般工业技术—材料科学与工程]