基于台区电能量分层级解耦的电能表远程在线校准  

Remote On-line Calibration of Electric Energy Meter Based on Hierarchical Decoupling of Electric Energy in Station Area

作　　者：严平[1] 方建全 黎小军[1] 张君胜[1] 何培东[1] YAN Ping;FANG Jian-quan;LI Xiao-jun;ZHANG Jun-sheng;HE Pei-dong(Measurement Center of State Grid Sichuan Electric Power Company,Chengdu 610045 China)

机构地区：[1]国网四川省电力公司计量中心,四川成都610045

出　　处：《自动化技术与应用》2024年第7期154-157,共4页Techniques of Automation and Applications

基　　金：国家电网有限公司总部科技项目(5700-202227226A-1-1-ZN)。

摘　　要：针对电能表元件稳定性较差的问题,提出基于台区电能量分层级解耦的电能表远程在线校准方法。根据台区电能量分层级精准解耦原则,设置典型分层端口结构,求解微分解耦数据方程,实现对电能系数的计量处理。分别从AD转换器量化误差、数值求积截断误差、同步误差三个角度着手,分析校准参量的取值结果,完成远程在线校准设计。实验结果表明:采用所提方法的总线电能表示数、支线电能表示数与理想示数之间的差值水平均能得到较好控制,与三轴同步校准方法相比,更符合维持电能表示数稳定性的实际应用需求。Aiming at the problem of poor stability of watt hour meter components,this paper proposes a remote online calibration method of watt hour meter based on hierarchical accurate decoupling of power energy in the station area.According to the principle of accurate decoupling of electric energy in the substation area,a typical layered port structure is set,and the differential decoupling data equation is solved to realize the measurement and processing of electric energy coefficient.From three aspects of AD converter quantization error,numerical quadrature truncation error and synchronization error,the value of calibration parameters is analyzed,and the remote online calibration design is completed.The experimental results show that the difference between the bus power indicator,the branch line power indicator and the ideal indicator can be well controlled.Compared with the three-axis synchronous calibration method,it is more in line with the practical application needs to maintain the stability of the power indicator.

关 键 词：精准解耦 电能表校准 电容器功能需求 微分解耦方程 量化误差 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置] TM933[自动化与计算机技术—控制科学与工程]