基于新型余弦组合窗相位差校正的介损角测量算法  

A loss angle measurement algorithm based on the phase difference correction of a cosine combined window

作　　者：李宁 迟长春(指导)[1] 郭振涛 LI Ning;CHI Changchun;GUO Zhentao(School of Electrical Engineering,Shanghai Dianji University,Shanghai 201306,China)

机构地区：[1]上海电机学院电气学院,上海201306

出　　处：《上海电机学院学报》2022年第5期277-281,298,共6页Journal of Shanghai Dianji University

摘　　要：为了准确测量绝缘介质的介损角,提高谐波检测算法的稳定性和准确性,构建了一种新型的余弦组合窗,并推导出基于Nuttall窗、Blackman-Harris窗相位差校正的介损角测量算法。利用Matlab/Simulink搭建仿真模型,在基波频率波动、谐波注入变化和信噪比不同时,将本文算法同其他经典介损角测量算法进行仿真分析,验证了本文算法更加准确和稳定。In order to accurately measure the dielectric loss angle of the insulating medium and improve the stability and accuracy of the harmonic detection algorithm,a novel type of cosine combination window is constructed in this paper,and the dielectric loss angle measurement algorithm is derived based on the Nuttall window and the Blackman-Harris window phase difference correction.Matlab/Simulink is used to build a simulation model.When the fundamental wave frequency fluctuation,harmonic injection change,and signal-to-noise ratio are different,the proposed algorithm is simulated and analyzed with other classical dielectric loss angle measurement algorithms.The results show that the proposed algorithm is more accurate and stable.

关 键 词：介损角 余弦组合窗 相位差校正 

分 类 号：TM93[电气工程—电力电子与电力传动]