电力信息与通信技术2025，Vol.23Issue(2)：71-76,6.DOI:10.16543/j.2095-641x.electric.power.ict.2025.02.09
新型电力系统中直流分量影响下电能计量准确性的研究
Research on the Accuracy of Electricity Metering Under the Influence of DC Component in A New Type of Power System
摘要
Abstract
Under the goal of"dual carbon",the construction of a new type of power system is the key content and important carrier of the construction of a new energy system,and it is an extremely challenging and pioneering system engineering.With the advancement of a new type of power system,more and more power electronic nonlinear loads are widely used,the voltage and current waveform in the power system is not an ideal sinusoidal waveform,and the system contains a large number of DC components.More attention has been paid to the accuracy of electricity metering under this non-ideal power grid.In this paper,starting from the study of the transmission characteristics of the transformer when the system contains DC components,the influence of the DC component on the transmission characteristics of the transformer is analyzed,and a compensation circuit to reduce the ratio difference of the transformer under the DC component is proposed.This compensation circuit synchronously compensates for the deviation of the magnetic flux of the transformer core caused by the DC component,so that the transformer is in the linear range within the measurement range,so as to ensure the accuracy of electricity metering.Experiments have verified that when there is a DC component in the system,the compensation circuit can significantly improve the accuracy of electricity metering of the transformer.关键词
互感器/电能计量/直流分量/铁芯饱和/直流补偿Key words
transformer/electricity metering/DC component/iron core saturation/DC compensation分类
信息技术与安全科学引用本文复制引用
姜洪浪,赵婷,王晓东,左嘉,王爽..新型电力系统中直流分量影响下电能计量准确性的研究[J].电力信息与通信技术,2025,23(2):71-76,6.基金项目
中国电力科学研究院有限公司项目"基于拆回电能表的故障分析与优化设计"(JL84-23-004). （JL84-23-004）
