变压器频率响应法测试结果的影响因素分析及改善  

Influencing Factors on Deformation Diagnosis of Transformer Windings

作　　者：曹小龙[1] 胡春梅[2] 曹小虎[2] 张治武[2] 陈平[1] 刘栋梁[1] 周斌 

机构地区：[1]甘肃省天水供电公司,天水741020 [2]甘肃省电力公司检修公司,兰州730000 [3]甘肃省陇南供电公司,陇南742500

出　　处：《高压电器》2012年第7期81-87,共7页High Voltage Apparatus

摘　　要：目前采用频率响应法诊断变压器绕组变形的应用相当广泛,但是在实际测量中,其测试结果会受到诸多因素的影响而失真,若不能准确识别这些影响因素,测试结果的可比性将大大降低,从而给测试结果的分析、判断带来困难甚至错误。笔者结合频率响应法检测技术在天水电网的应用情况,总结了现场由于各种影响因素造成的绕组频率响应曲线异常的实例并将其逐一归类,为今后判断变压器绕组变形提供依据。Frequency response method is widely applied to diagnosis of transformer winding deformation. However, measurement distortion will take place because of many influencing factors, which may decrease the comparability of measurement results, and thus make analysis and judgement of the results difficult or even false. To accurately identify the influencing factors, we sum up and classify different abnormal curves of windings＇ frequency response due to different influencing factors according to the application of frequency response detection technology in Tianshui grid. This study is expected to provide evidence for deformation judgement of transformer windings .

关 键 词：变压器 绕组变形 频率响应 影响因素 

分 类 号：TM41[电气工程—电器]