一起220kV隔离开关异常合闸故障分析  

Analysis of a 220 kV Isolation Switch Closing Failure

作　　者：付士亮 张丽 陈自强 施航 Fu Shiiang;Zhang Li;Chen Ziqiang;Shi Hang(Honghe Power Supply Bureau of Yunnan Power Grid Corporation,Honghe 661100,Yunnan,China;Electric Power Research Institute of Yunnan Power Grid Corporation,Kunming 650011,Yunnan,China;Lincang Power Supply Bureau of Yunnan Power Grid Corporation,Lincang 677000,Yunnan,China;Wenshan Power Supply Bureau of Yunnan Power Grid Corporation,Wenshan 663000,Yunnan,China)

机构地区：[1]云南电网有限责任公司红河供电局,云南红河661100 [2]云南电网有限责任公司电力科学研究院,云南昆明650011 [3]云南电网有限责任公司临沧供电局,云南临沧677000 [4]云南电网有限责任公司文山供电局,云南文山663000

出　　处：《云南电力技术》2024年第4期83-85,91,共4页Yunnan Electric Power

摘　　要：变电站控制与信息交互都离不开低压电缆,随着电缆使用年限增加,逐渐丧失绝缘性能,使其在绝缘薄弱的区域与大地之间形成某种导电途径,导致二次回路误导通、开关误动作现象时有发生,本文结合一起隔离开关异常合闸故障,分析控制回路故障原因,并提出相关整改措施。The control and information interaction in substations are inseparable from low-voltage cables.As the service life of cables increases,they gradually lose their insulating properties,forming some conductive paths between areas with weak insulation and the ground.This leads to misoperations in secondary circuits and switches.This article,in conjunction with an abnormal closing fault of an isolation switch,analyzes the causes of control circuit faults and proposes relevant rectification measures.

关 键 词：隔离开关 合闸异常 绝缘异常 等效电路:整改优化 

分 类 号：TM74[电气工程—电力系统及自动化]