摘要
对某500kV变电站5011断路器合闸空充主变压器、5032断路器跳闸事件进行调查及分析,得出其动作为干扰所致。500kV超高压电网设备操作时,电气设备周围的静电场和磁场、电晕和电磁波辐射等引起的电磁干扰通常情况下比较大,而500kV断路器操作电压又比较低,所以极易受到干扰。通过此次事故的分析,对防跳继电器的规范整定提出了更严格的要求。
In a 500 kV substation,when the breaker No.5011 was switched on to charge the main transformer without load,the breaker No.5032 was tripped. The accident was investigated and analyzed,and the conclusion was obtained that the action of the breaker No.5032 was caused by the interference. When the equipment of the 500 kV EHV power grid is being manipulated,the electromagnetic interference,which caused by the static electric field and the magnetic field around the equipments,the corona and the electromagnetic radiation,often is larger,and the operating voltage of the 500 kV breaker is lower; therefore,it is easy disturbed. According to the analysis of this accident,more rigorous requirement of the normative setting of the anti-jump relay was put forward.
出处
《华电技术》
CAS
2010年第7期62-63,共2页
HUADIAN TECHNOLOGY
关键词
跳闸
干扰
防跳继电器
tripping
interference
anti-jump relay
