变压器绕组变形综合分析方法研究  

Research on Comprehensive Analysis Method of Transformer Winding Deformation

作　　者：陆豪赫 李国栋 郭玥 刘婷亮 LU Haohe;LI Guodong;GUO Yue;LIU Tingliang(Electric Power Research Institute of State Grid Shanxi Electric Power Corporation,Taiyuan,Shanxi 030001,China;New York University,New York 10003,United States of America)

机构地区：[1]国网山西省电力公司电力科学研究院,山西太原030001 [2]纽约大学,美国纽约10003

出　　处：《山西电力》2024年第6期6-9,共4页Shanxi Electric Power

摘　　要：电力变压器遭受短路冲击时,其绕组状态会发生一定程度的改变,导致电网安全运行受到威胁。针对单一方法诊断变压器绕组变形不够准确的问题,以1台110 kV变压器绕组变形情况为例,将频率响应法和电容分解法相结合进行变压器绕组变形综合分析,结果显示:该台变压器发生A相中压绕组内凹缺陷的结论,与吊罩观察结果相符。此方法对变压器绕组状态诊断具有一定的指导意义。When a power transformer is subjected to a short circuit impact,its winding state will change to a certain extent,which threatens the safe operation of power grid.In order to deal with the problem that single method is not accurate enough to diagnose transformer winding deformation,with the winding deformation of a 110 kV transformer as an example,the frequency response method and capacitive decomposition method are combined to analyze the deformation of transformer winding.The results show that there is concave defect in Phase A medium voltage winding of the transformer,which is consistent with the observation of the hanging hood.This method has certain guiding significance for the diagnosis of transformer winding state.

关 键 词：变压器 短路 绕组状态 频率响应法 电容分解法 

分 类 号：TM41[电气工程—电器]