复杂动态电能信号的游程域特征分析理论与建模  

Theory and Modeling of Characteristic Analysis in Run Domain for Complex Dynamic Electrical Energy Signal

作　　者：王学伟[1] 吴迪 袁瑞铭 李文文 王国兴 WANG Xuewei;WU Di;YUAN Ruiming;LI Wenwen;WANG Guoxing(School of Information Science and Technology,Beijing University of Chemical Technology,Chaoyang District,Beijing 100029,China;Meterology Center,State Grid Jibei Electric Power Company Limited,Xicheng District,Beijing 100045,China)

机构地区：[1]北京化工大学信息科学与技术学院,北京市朝阳区100029 [2]国网冀北电力有限公司计量中心,北京市西城区100045

出　　处：《电网技术》2025年第4期1617-1624,共8页Power System Technology

基　　金：国网冀北电力有限公司科技项目“高比例新能源接入下多随机量电能计量模型研究与应用”(52010122001R)。

摘　　要：针对国内外新型电力系统建设中,复杂动态电能计量信号强随机性导致电能计量严重超差问题,提出了复杂动态电能计量信号的游程域特征分析与特征建模理论,分析游程域重要特征对电能表误差的影响。首先,构建复杂动态电能信号的随机参量模型;其次,提出一种复杂动态电流幅度序列映射到游程域的理论方法;构建游程域特征参量,提取电流快速变化局部特征;构建特征函数,提取电流随机变化全局特征;然后,提出一种复杂动态电能信号多特征约束模型、模型约束条件、以及表征游程域特征的方法;最后,基于游程域局部和全局特征,构建了长m序列动态电能参比测试信号模型,实验分析了游程域特征对电能表动态误差的影响,进而,提出了提升国际标准中电能表误差测试方法的建议。The strong stochastic fluctuation of complex dynamic electrical energy signals has resulted in significant issues of electricity metering error overproof during the construction of new power systems,both domestically and internationally.To tackle this problem,a theory was proposed to analyze and model the run-domain characteristics of these signals.Crucial characteristics were identified in terms of their impact on metering errors.Firstly,a random parameter model was constructed for these signals.Secondly,a theoretical method was proposed to map current amplitude sequences into the run domain.In this process,characteristic parameters were constructed to extract local characteristics representing rapidly time-varying fluctuation in current.In contrast,characteristic functions were utilized to extract global characteristics representing stochastic fluctuation in current.A multi-characteristic constraint model and methods for characterizing constraint conditions based on run-domain characteristics were proposed.Finally,a long m-sequence dynamic electrical energy reference test signal model was constructed,considering local and global characteristics within the run domain.The influence of these run-domain characteristics on electricity meter error was revealed through experimental analysis.These findings led to recommendations for enhancing international electricity meter error testing standards.

关 键 词：复杂电能信号 游程域特征 信号特征建模 多特征约束模型 电能表动态误差 

分 类 号：TM721[电气工程—电力系统及自动化]