袁瑞铭,李雨晴,姜振宇,易忠林,王学伟,郭皎.压缩感知动态测试信号模型与电能表动态误差测试*[J].电测与仪表,2023,60(8):181-186. Yuan Ruiming,Li Yuqing,Jiang Zhenyu,Yi Zhonglin,Wang Xuewei,Guo Jiao.Compressive sensing dynamic test signal model and dynamic error test of electricity meter[J].Electrical Measurement & Instrumentation,2023,60(8):181-186.
压缩感知动态测试信号模型与电能表动态误差测试*
Compressive sensing dynamic test signal model and dynamic error test of electricity meter
Aiming at the problem of efficient measurement of dynamic error of intelligent electricity meters, firstly, in amplitude domain, the characteristics of fast random fluctuation of complex dynamic load signals are analyzed over a long period of time; Secondly, the model of compressed sensing pseudo-random dynamic load test signal is established, and then the measurement matrix construction method combining Hadamard matrix and the 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, by means of the experimental test method, the dynamic error data of the electricity meter under the conditions of compressed sensing and m-series dynamic test signals are compared. The 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.
