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 typi-cal 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 me-ter 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
Key words
dynamic energy metering/waveform mode clustering/waveform feature extraction/typical characteris-tics of signals/sensitive features of signals
维普
万方数据