变压器绕组变形测试技术用于重庆电网

Research on Application of TR Winding Testing Technology in Chongqing Power Network

为消除变压器绕组变形引起的事故隐患 ,根据频率响应法在重庆电网中应用的实际情况 ,研究得出了应用该方法测试变压器绕组变形的初步判据 ;同时指出 ,在没有原始频响特性曲线对照、主变又被频响法判定为绕组变形时 。

In order to find an effective TR winding deformation testing method, the authors carried out research on the practice of Frequency Response testing method in Chongqing power network and concluded that several primary criteria can be used to judge the deformation of TR winding. At the same time, it is pointed out that short-circuit impedance testing technique could be an assistant but effective method to further determine winding deformation when there is no original frequency response curve and the main transformer winding is regarded deformed by frequency response testing method.