适用于新能源多特征参量的宽动态高准确度电能计量方案研究OACSTPCD

With the gradual replacement of traditional energy by new energy,and the development of the state grid smart grid,it is pos-sible to connect new energy generation to the grid.In the new power system,the high proportion of new energy access has strong uncer-tainty,large fluctuation,and serious distortion of current waveform,which will impact the traditional electric energy metering equip-ment,resulting in a large measurement error when the original electric energy metering equipment is used.In order to meet the require-ments of the new power system measurement,the paper is based on zero flux current sensing technology,non-pole smooth amplification technique,high-precision angular difference compensation method to achieve accurate measurement of energy meters under wide dynamic and multi feature parameters.The experimental results indicate that the new energy metering scheme can be applied to wide dynamic range,low power factor,and bidirectional power flow conditions under new energy access,effectively improving the overall efficiency of the power system.The research results of this paper provide important guidance for the optimization design of various energy metering technologies and algorithms as well as for applications of energy metering in the field of new energy.