摘要
绕组变形是诱发变压器事故的主要原因之一,及时检测和排除绕组故障意义重大。研究了脉冲响应法在变压器绕组变形故障离线检测中的应用,为了克服该方法固有的重复性不高的缺陷,提出了仅分析频率响应曲线的低频段信息。健康变压器实验证实了频率响应的低频段重复性较好,故障变压器实验证实了该方法能够有效诊断出绕组匝间短路故障。综合来看,脉冲响应法虽然舍去了频率响应部分信息,但依然具有一定的工程应用价值。
Winding deformation is one of the main reasons to induce the transformer failure,it is important to timely detect and remove the winding faults.The application of pulse response method on offline transformer winding deformation detection is studied.In order to overcome the intrinsic imperfection of low repeatability of this method,to just analyze the low frequency band of frequency response curve is proposed.Test result of the healthy transformer demonstrates that the repeatability of frequency response within the low frequency band is enough high,faulty transformer experiment shows that the proposed method is capable of effectively diagnosing the winding inter-turn short circuit fault.In general,although the pulse response method leaves out some information of frequency response,it still has application value in engineering.
作者
师一卿
刘伟
韩彦华
王荆
赵仲勇
SHI Yiqing;LIU Wei;HAN Yanhua;WANG Jing;ZHAO Zhongyong(State Grid Shanxi Electric Power Company,Xi’an 710048,China;Academy of Electric Power Sciences,State Grid Shanxi Electric Power Company,Xi’an 710199,China;College of Engineering and Technology,Southwest University,Chongqing 400715,China)
出处
《电气应用》
2020年第2期30-35,共6页
Electrotechnical Application
基金
国家电网公司科技项目(SGSNKY00SPJS1800664)
中央高校基本科研业务费(SWU118031)。
关键词
脉冲响应法
变压器
频率响应
短路电动力
pulse response method
transformer
frequency response
short circuit electrodynamic force
