Application of state evaluation of Electric Energy Metering Device

Electric Energy Metering Device (EEMD) is the trade settlement hub of electric energy among power generation companies, grid companies, sales companies and power users. Its operation accuracy and stability directly affect the economic interests of both sides of trade. In order to effectively track the running state of EEMD, discover problems existing in the operation period in time, and eventually minimize trading loss on both sides, the state evaluation of EEMD is required. Based on the state indexes, evaluation methods, state grades classification and result processing, this article reviews recent research on the state evaluation of EEMD and presents suggestions for improvement, aiming at making it more practical in engineering application.