110kV某变电站#2主变内部故障原因分析

Analysis of Internal Fault of 110kV Substation#2 Main Transformer

110kV某变电站#2主变由于线路接地短路故障造成内部绕组放电变形缺陷。通过对故障期间天气、输电线路放电痕迹、用户配电室放电痕迹、变电站内保护装置动作情况及故障主变试验分析等情况的综合分析,得出主变内部故障原因。针对故障原因提出相应的防范措施,防止同类事故再次发生。

The internal winding discharge deformation defect of#2 main transformer in a 110kV substation is caused by line grounding short circuit fault.Through the comprehensive analysis of the weather during the fault,the discharge trace of transmission line,the discharge trace of user distribution room,the action of protection device in substation and the test analysis of fault main transformer,the internal fault causes of main transformer are obtained.Corresponding preventive measures are put forward to prevent similar accidents from happening again.