Aiming at the impact of rapid change of complex dynamic power signal on the error of electricity meter

currently published papers only extract a few waveform samples for analysis

which cannot reflect waveform modes of various current variations

and do not further explore characteristics of power signal and its characterization. Therefore

The fundamental amplitude waveforms are extracted for 3 types of typical complex dynamic power signals. Then

characteristic parameters of run-length and their characterization modes are proposed. On basis of analyzing the typical features of amplitude domain

28 typical run-length waveforms can be extracted by further analyzing multi-run-length characteristics of current amplitude

and then

the sample library of current characteristic waveforms can be established. According to the characteristic of run length

suggestion test points are given for supplementing international and domestic electricity meter standard.