摘要
频率响应分析(FRA)法是用于检测变压器绕组变形状态的一种可靠且实用的手段。研究FRA曲线与绕组等效电路参数之间的关系,对于深入挖掘FRA曲线蕴含的反映绕组变形状态的信息,以及提高对FRA曲线的认知具有重要作用。本文将灵敏度分析方法引入变压器绕组等效电路的FRA曲线分析中,利用增量网络法推导变压器绕组等效电路中不同类型参数变化对绕组频率响应的相对灵敏度,建立绕组等效电路参数变化与FRA曲线间的定量关系。通过分析频率响应幅值对等效电路参数的灵敏度变化曲线,研究不同参数变化对FRA曲线幅值变化的影响特征。结果表明,本文方法有助于提高工程技术人员对FRA曲线的认识能力,可为后续深入解释FRA曲线变化规律提供依据。
Frequency response analysis(FRA)is a reliable and practical method for detecting transformer winding deformation.To study the relationship between FRA curves and winding equivalent circuit parameters is great significant for exploring the information contained in FRA curve that reflects the state of winding and improving the cognition of FRA curve.In this paper,the sensitivity analysis method is introduced into the FRA curve of the equivalent circuit of the transformer winding.The incremental network method is used to deduce the relative sensitivity of different types of parameters in the equivalent circuit to the frequency response.And the quantitative relationship between the parameter changes of equivalent circuit and the FRA curve is established.By analyzing the sensitivity curve of the amplitude of FRA curve to the equivalent circuit parameters,the characteristics of different parameters on the amplitude of the FRA curve are studied.The research results of this paper are helpful to improve the cognition ability of engineers to the FRA curve,and can provide a support for further interpretation of the variation law of the FRA.
作者
杨思莹
王松
杨丰野
邱晟璇
李童
YANG Siying;WANG Song;YANG Fengye;QIU Shengxuan;LI Tong(Department of Power and Electrical Engineering,Northwest A&F University,Yangling,Shaanxi 712100;Huangling Mining Group Co.,Ltd of Shaanxi Coal and Chemical Industry Group,Huangling,Shaanxi 727307)
出处
《电气技术》
2023年第3期9-15,22,共8页
Electrical Engineering
关键词
频率响应分析(FRA)
变压器绕组
增量网络法
灵敏度
frequency response analysis(FRA)
transformer winding
incremental network method
sensitivity
