66kV主变压器累积短路冲击烧损故障分析  

Analysis of Cumulative Short Circuit Impulse Burning Failure of 66kV Main Transformer

作　　者：王伟 于群英 王喆 司昌健 赵晓冰 邰宇峰 WANG Wei;YU Qunying;WANG Zhe;SI Changjian;ZHAO Xiaobing;TAI Yufeng(State Grid Jilin Electric Power Company Limited,Changchun 130028,China;State Grid Jilin Electric Power Company Limited Electric Power Research Institute,Changchun 130021,China;Jilin Power Transmission and Transformation Engineering Company Limited,Changchun 130022,China;State Grid Tonghua Power Supply Company,Tonghua 134o01,China)

机构地区：[1]国网吉林省电力有限公司,长春130028 [2]国网吉林省电力有限公司电力科学研究院,长春130021 [3]吉林省送变电工程有限公司,长春130022 [4]国网通化供电公司,吉林通化134001

出　　处：《吉林电力》2022年第6期49-51,共3页Jilin Electric Power

摘　　要：针对变压器故障,介绍了一起66 kV主变压器1天之内受到5次短路冲击后造成主变压器绕组发生严重烧熔变形故障。对2次停电分别进行了故障诊断性试验,通过故障综合分析得出,当变压器处于故障初期,仅进行例行诊断试验很难反应缺陷情况,应立即开展绕组变形及空载损耗测试。In view of the transformer fault,a 66 kV main transformer was subjected to five short circuit shocks in one day,which caused serious burning and deformation of the main transformer winding.Fault diagnostic tests were carried out for the two power outages respectively.Through comprehensive fault analysis,it was concluded that when the transformer was at the initial stage of fault,it was difficult to reflect the defects only by routine diagnostic tests,and winding deformation and no-load loss tests should be carried out immediately.

关 键 词：主变压器 短路冲击 变形 烧损 

分 类 号：TM247[一般工业技术—材料科学与工程]