摘要
电力变压器绕组的局部扭曲、鼓包或移位等变形将降低绝缘水平,引发变压器严重故障。文中对频率响应分析法和低电压阻抗法两种绕组变形判别的原理和标准进行分析,通过实例阐述了变形故障的判别过程,对比两种方法的优缺点,为变压器变形检测提供参考。
Power transformer windings local distortion, bulge or shift etc will cause insulation levels drop and lead to serious fault of transformer. This paper mainly analyzes the principles and standards for differentiating two winding deformationthe , including frequency response analysis and low-voltage impedance diagnosis method. By using practical examples this paper expounds the deformation and failure process of discriminant. The advantages and disadvantages of two methods were compared. The methods will provide support to improve the deformation of transformer testing.
作者
赵春芳
王世民
蒋大伟
ZHAO Chunfang;WANG Shimin;JIANG Dawei(College of Information and Control, Shenyang Institute of Technology, Fushun Liaoning 113122, China;State Grid Jinzhou Power Supply Company, Jinzhou, Liaoning 121000, China;Electric Power Research Institute of State Grid Liaoning Electric Power Co., Ltd., Shenyang, Liaoning 110006, China)
出处
《东北电力技术》
2018年第3期27-31,共5页
Northeast Electric Power Technology
关键词
变压器
绕组变形
频率响应
低电压阻抗
transformer
winding deformation
frequency response
low-voltage impedance diagnosis method
