Online Evaluation Method of Metering Device Running State Based on Similarity

For 10kv integrated metering device, only cyclical replacement of the electricity meter will not guarantee the efficient and accurate operation of the metering device. However, for the overall integrated metering box disassembly there are some problems, such as large quantity of work and difficulties in determining the substitution cycle. In this paper, through the online measurement of dynamic load variation parameters of power grid, the problems of dynamic trend change of electric energy is transformed into the problem of pattern distance in space. And then use dynamic time warping algorithm for similarity recognition of sequence patterns to determine the power similarity level. The comprehensive evaluation of the running state of the integrated electric energy metering device is realized. The results of laboratory test data proved the feasibility of this method.