末屏接线法在电力变压器绕组变形测试中的应用研究  

Application Research of End Screen Wiring Method in Power Transformer Winding Deformation Test

作　　者：杨力 高立超 YANG Li;GAO Lichao(State Grid Gansu Electric Power Company,Lanzhou 730030,China;State Grid Gansu Electric Power Research Institute,Lanzhou 730070,China)

机构地区：[1]国网甘肃省电力公司,甘肃兰州730030 [2]国网甘肃省电力公司电力科学研究院,甘肃兰州730070

出　　处：《电工技术》2018年第3期132-134,共3页Electric Engineering

摘　　要：对频率响应法测量大型电力变压器绕组变形的方法进行改进,提出在电容型套管末屏注入测量信号代替在套管首端注入信号的新方法。试验结果表明,两种接线方法测得的图谱在形状和走向上大致相同,只是在幅值上略有不同,但具有相对应关系。通过分析两种方法的原理,对比实测结果,验证了末屏接线测试方法的可行性。The frequency response method for measuring winding deformation of large power transformers is improved and thus a new method is proposed.Test results show that the patterns measured by the two wiring methods are approximately the same in shape and trend,but slightly different in magnitude,having a corresponding relationship.The principles of the two methods are analyzed.The actual test results are compared,and the end screen wiring method is proved to be feasible through a large number of field test data.

关 键 词：变压器 绕组变形 末屏接线法 

分 类 号：TM41[电气工程—电器]