干式接地变压器的故障分析  

Fault Analysis of Dry Earthing Transformer

作　　者：王国亮[1] 吕乐[1] 胡伟[1] 刘峥 秦旷 李俊华[1] 王珏[1] 王哲[1] 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)

机构地区：[1]国网郑州供电公司,河南郑州450052 [2]国网洛阳供电公司,河南洛阳471000 [3]国网河南技培中心,河南郑州450001

出　　处：《电气开关》2021年第2期84-86,共3页Electric Switchgear

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.

关 键 词：接地变 匝间短路 绕组 绝缘老化 

分 类 号：TM407[电气工程—电器]