扫频短路阻抗法检测变压器绕组变形的应用研究  

Research on Principle and Field Application Transformer Winding Deformation Tester Based on SFSCR Method

作　　者：杨超[1] 张霖[1] 薛静[1] YANG Chao;ZHANG Lin;XUE Jing(Guiyang Power Supply Bureau,Guiyang 550002,China)

机构地区：[1]贵阳供电局,贵州贵阳550002

出　　处：《电气开关》2018年第2期89-93,共5页Electric Switchgear

摘　　要：绕组变形测试是判断变压器受短路电流冲击后绕组状态的一种有效手段。利用新的扫频阻抗法检测变压器绕组变形,有效的结合了频率响应法和短路阻抗法的优点,通过分析频率响应曲线和短路阻抗曲线,综合诊断变压器的绕组变形状况。研究结果表明:扫频阻抗法可以有效检测变压器的绕组变形状况,且判断准确率高,抗干扰能力强。Deformation test is effective when judging the condition of transformer winding which impacted by short current.Using the new test method called sweep frequency short-circuit reactance method(SFSCR)detects transformer winding condition,the new method combines the advantage of frequency response analysis method and short-circuit reactance Method.Judging the condition of transformer winding trough the frequency response curve and short impedance curve.The results show:sweep frequency short-circuit reactance method can detect transformer winding deformation effectively,this method has higher judging accuracy and stronger anti-interference ability.

关 键 词：变压器绕组 变形 频率响应法 短路阻抗法 扫频短路阻抗法 

分 类 号：TM41[电气工程—电器]