摘要
拉西瓦水电站电气主接线为发电机—变压器联合单元接线,发电机出口装设发电机断路器,发电机机端电压18 kV,主变压器采用3台单相变组成三相组,750 kV侧2串3/2断路器和1串双断路器接线。文章就拉西瓦水电站1号主变压器高压侧C相G IB发生单相接地故障现象进行分析,提出了处理方法和防范对策。
Main electrical wiring of Laxiwa hydropower station is generator transformer joint unit wiring,installing circuit breakers on generator outlet,terminal voltage of generater is 18kV,and main transformer adopts 3 sets of single phase changing into three phase.The paper analyzes the failure of C phase high pressure side GIB single phase grounding for 1# Main Transformer in Laxiwa hydropower station,and puts forward processing method and countermeasures.
出处
《青海电力》
2011年第2期49-50,63,共3页
Qinghai Electric Power
关键词
主变压器高压侧
单相接地故障
原因分析
处理方法
main transformer high pressure side
single phase grounding failure
reason analysis
processing method
