摘要
本文介绍两台干式接地变压器相继故障,通过事故象征,进行全面分析,由于制造工艺欠佳等原因,造成运行中高压侧绕组匝间短路,确定了产品故障的根本原因。
This article introduces the successive failures of two dry-type grounding transformers.Through the accident symbol,a comprehensive analysis is carried out.Due to poor manufacturing technology and other reasons,the high-voltage side winding turns short circuit during operation,and the root cause of the product failure is determined.
作者
王国亮
吕乐
胡伟
刘峥
秦旷
李俊华
王珏
王哲
程海涛
邱军亮
WANG Guo-liang;LV Le;HU Wei;LIU Zheng;QIN Kuang;LI Jun-hua;WANG Jue;WANG Zhe;CHENG Hai-tao;QIU Jun-liang(Zhengzhou Power Supply Company of State Grid,Zhengzhou 450052,China;State Grid Luoyang Power Supply Company,Luoyang 471000,China;Henan Technical Training Center of State Gfrid,Zhengzhou 450001,China)
出处
《电气开关》
2021年第2期84-86,共3页
Electric Switchgear
关键词
接地变
匝间短路
绕组
绝缘老化
ground change
Interturn short circuit
Winding
Insulation aging
