Research on Error Control of Energy Measurement in AC/DC Microgrids Un-der Strong Interference Environment
Due to significant errors between the measurement results of the AC/DC microgrid and the actual energy situation,the effectiveness of error control is poor,which in turn affects the guarantee of the economic benefits of the AC/DC microgrid.In order to enhance the accuracy of electricity metering,a study on error control of electricity me-tering in AC/DC microgrids under strong interference environments is proposed.By establishing a signal model,the harmonic interference and electromagnetic interference in the operating environment of AC/DC microgrids were ana-lyzed,and a mathematical model of the amplitude modulation circuit under triangular wave modulation was construct-ed.By defining adjustment factors to perceive the operating situation of microgrids,and combining the error values of energy metering and environmental interference parameters to compensate for corresponding errors,the error control of energy metering is achieved.Through experiments,it is known that this method has a small deviation in power ratio,excellent control accuracy,and meets the actual needs of electricity metering.
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