短路阻抗法在变压器绕阻变形测试中的应用

Application of the method of short-circuit impedance in the deformation test of transformer winding

短路阻抗是变压器的一个重要特性参数,决定了变压器在系统短路时短路电流的大小及变压器内部的电动力的大小。在变压器受短路冲击时,通过短路阻抗试验及绕组变形试验可检测出该受冲击变压器是否受变形。当变压器已发生变形时可通过测试变压器的单相漏抗来判断冲击变压器绕组发生变形相。

Short circuit impedance is an important characteristic parameter of transformer, which decides short circuit current of a transformer in system short circuit is large or small and electrodynamic force of transformer inside is large or small. When transformer gets short circuit impact, through short circuit impedance test and winding deformation test can detect whether the impacted transformer distorted, when the deformation has happened, can detect single phase leakage impedance of transformer to judge the appearing anamorphic phase of impacted transformer winding.