Equivalent Impedance Parameter Calculation of Three-phase Symmetrical Loads for Harmonic Source Location  

作　　者：Yi Zhang Bijie Liu Caihua Lin Zhenguo Shao Yuncong Xu 

机构地区：[1]the Department of Electrical Engineering and Automation,Fuzhou University,Fuzhou,China [2]State Grid Fujian Electric Power Research Institute,Fuzhou,China

出　　处：《Journal of Modern Power Systems and Clean Energy》2024年第1期251-260,共10页现代电力系统与清洁能源学报（英文）

基　　金：supported by the National Natural Science Foundation of China(No.51777035).

摘　　要：The equivalent impedance parameters of loads have been widely used to identify and locate the harmonic sources.However,the existing calculation methods suffer from outliers caused by the zero-crossing of the denominator.These outliers can result in inaccuracy and unreliability of harmonic source location.To address this issue,this paper proposes an innovative method of equivalent impedance parameter calculation of three-phase symmetrical loads that avoid outliers.The correctness and effectiveness of the proposed method are verified by simulations on Simulink using actual monitoring data.The results show that the proposed method is not only simple and easy to implement but also highly accurate.

关 键 词：abc-αβtransformation equivalent impedance parameters of load harmonic source location nonlinear load power quality 

分 类 号：TM721.1[电气工程—电力系统及自动化]