摘要
针对一起220kV变电站送电事故,阐述了故障分析思路和排查故障的方法。通过对M/N侧保护动作报文及录波图进行分析,确定故障范围。在此基础上,对N侧母线保护装置进行了检查,排除了装置本身故障。结合站内设备全部为GIS组合电气的现场实际,将故障范围进行划分,逐级进行绝缘测试,正确地找出故障点。对故障点进行了现场检查、确认,并就相关疑惑进行了解答。
This paper, in accordance with a power transmission operation accident in 220 kV transformer substation ,elaborates the analytical means of the accident in detail .The range of the accident is defined by analyzing the trip reports and wave records of the protections at the M/N side .On that basis, the bus protections of the side Nare checked and the fault of the bus protections is eliminated.In the light of the fact that the equipments in the substation are all gas insulated switchgear（GIS） ,we divide the range of the accident, make an insulation test level by level, find out the exact origin of the accident.Finally ,the fault location is checked and confirmed, and the doubts are solved.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第24期206-208,230,共4页
Power System Protection and Control
关键词
母差保护
光纤纵差
远方跳闸
GIS
绝缘
bus protection
current differential protection based on fiber-optical
remote trip
GIS
insulation
