复杂工况下直流电能计量的算法影响及误差分析

现有直流电能表多针对直流稳态电能进行计量，对充电过程中电压、电流变化适应性较差，且忽略功率脉动及高频纹波产生的功率。为此，通过研究整流性负载、开关充电设备以及快速动态变化负荷的直流电能产生原理，结合电能表计量算法和实验阐述了计量过程中存在的误差影响，提出了不同计量场合下减少计量误差的算法参数优化方法。为电能计量精度的提高提供参考，为直流计量算法的优化提供思路，明确改进方向。

Algorithm influence and error analysis of DC power measurement under complex working conditions

Most of the existing DC energy meters are used to measure the DC steady-state energy, which has poor adaptability to the change of voltage and current during the charging process, and ignores the power generated by power fluctuation and high-frequency ripple. Therefore, by studying the principle of DC power generation of rectifier load, switch charging equipment and fast dynamic load, combining with the metering algorithm and experiment of electric energy meter, this paper expounds the error influence in the metering process, and puts forward the optimization method of calculation parameters to reduce the metering error in different metering occasions. It can provide reference for improving the accuracy of electric energy measurement in different measurement occasions, provide ideas for the optimization of DC measurement algorithm, and clarify the direction of improvement.