摘要
针对某220kV变电站2号主变压器故障、差动保护动作跳闸,通过对YN-d11接线主变压器低压侧两相短路故障的特征量及故障录波器在事故时记录的波形数据进行理论分析,推断出事故的发展过程及故障点位置,并对类似的设备提出了整改意见和防范措施,严防类似的事故再次发生。
Aiming at the differential protection tripping caused by a 220kV transformer fault, the paper analyzes the characteristics of two-phase short circuit fault of the YN-d11 wiring on the low voltage side of the main transformer and waveform data recorded by fault recorder in the accident. The process of the accident and the location of the fault point are deduced, and reformation opinions and preventive measures for similar equipment are put forward to prevent similar accidents.
出处
《安徽电力》
2018年第1期36-39,共4页
Anhui Electric Power
关键词
主变压器故障
差动保护
跳闸
两相短路分析
main transformer fault
differential protection
tripping
two-phase short circuit analysis
