复杂动态负荷幅度域波形模态聚类与电能表误差敏感特征  

Waveform mode clustering in the amplitude domain of complex dynamic loads and sensitive characteristics of the errors in electricity meters

作　　者：王学伟[1] 顾鹏婷 袁瑞铭 李文文 王国兴 WANG XueWei;GU PengTing;YUAN RuiMing;LI WenWen;WANG GuoXing(College of Information Science and Technology,Beijing University of Chemical Technology,Beijing 100029;Meterology Center,State Grid Jibei Electric Power Company Limited,Beijing 100045,China)

机构地区：[1]北京化工大学信息科学与技术学院,北京100029 [2]国网冀北电力有限公司计量中心,北京100045

出　　处：《北京化工大学学报（自然科学版）》2024年第1期92-100,共9页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家电网公司科技项目(5700-202211214A-1-1-ZN)。

摘　　要：针对复杂动态负荷游程波形模态及引起电能表误差的典型特征认识不足的问题,首先提出动态电流信号幅度域游程波形模态提取算法,提取了多种幅度域毫秒级小颗粒度游程波形模态;其次,提出LK-Shape游程波形模态聚类算法,提取了动态电流信号幅度域的6类典型游程波形模态及其快速变化特征;最后,提出导致电能表超差的两种敏感游程波形模态,并通过实验验证了该游程波形模态适于测试电能表误差,表明了所提方法的有效性和实用性。A clear understanding of complex dynamic load run waveform modes and the typical features that cause errors in electricity meters is currently lacking.In this work,an algorithm of run waveform modes extraction in the amplitude domain of dynamic current signal is proposed,and a variety of millisecond small granularity run waveform modes are extracted.Secondly,the LK-Shape run waveform modes clustering algorithm is proposed,and six typical run waveform modes and their rapid variation characteristics in the amplitude domain of dynamic current signals are extracted.Finally,two kinds of sensitive run wave modes that cause errors out of tolerance in the electricity meter are proposed.The experimental results verify that the run waveform mode is convenient for testing the errors in electric energy meters and show that the proposed method is effective and practical.

关 键 词：动态电能计量 波形模态聚类 波形特征提取 信号典型特征 信号敏感特征 

分 类 号：TM933[电气工程—电力电子与电力传动]