压缩感知动态测试信号模型与电能表动态误差测试  

Compressed sensing dynamic test signal modeling and dynamic error test of electricity meter

作　　者：袁瑞铭 李雨晴 姜振宇 易忠林 王学伟[2] 郭皎 Yuan Ruiming;Li Yuqing;Jiang Zhenyu;Yi Zhonglin;Wang Xuewei;Guo Jiao(Metrology Center,State Grid Jibei Electric Power Co.,Ltd.,Beijing 100045,China;School of Information Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China)

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

出　　处：《电测与仪表》2023年第8期181-186,共6页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(51577006)。

摘　　要：文中针对智能电能表动态误差的高效测试问题,分析了长时间范围内复杂动态负荷信号幅度域的快速随机波动特性,建立了压缩感知伪随机动态负荷测试信号的模型,采用Hadamard矩阵和降采样矩阵结合的测量矩阵构建方法,确定了该测试信号的模型参数,提出了压缩感知测量信号的产生方案。采用试验方法,对比给出了压缩感知和m序列动态测试信号条件下电能表动态测试的误差数据。研究结果表明相比较于m序列伪随机测试信号,压缩感知动态测试信号的动态误差测试效率提高了4倍。Aiming at the problem of efficient test of dynamic error of intelligent electricity meters,firstly,the characteristics of fast random fluctuation of complex dynamic load signals in amplitude domain are analyzed over a long period of time,and the model of compressed sensing pseudo-random dynamic load test signal is established.Secondly,the measurement matrix construction method combining Hadamard matrix and down-sampling matrix is adopted to determine the model parameters of the test signal,and a scheme for generating compressed sensing measurement signal is proposed.Finally,the dynamic error data of the electricity meter under the conditions of compressed sensing and m-series dynamic test signal are obtained by means of experimental test method.The research results show that the dynamic error test efficiency of the compressed sensing dynamic test signal is 4 times higher than that of the m-sequence pseudo-random test signal.

关 键 词：压缩感知 动态测试信号 电能表动态误差 测试信号模型 

分 类 号：TM933[电气工程—电力电子与电力传动]