侯磊,常征,蔡毅,贾永会,陈月.基于Romberg积分算法的直流配网电能计量方法[J].电测与仪表,2023,60(5):186-192. Hou Lei,Chang Zheng,Cai Yi,Jia Yonghui,Chen Yue.Electric energy metering method of DC distribution network based on Romberg integral algorithm[J].Electrical Measurement & Instrumentation,2023,60(5):186-192.
基于Romberg积分算法的直流配网电能计量方法
Electric energy metering method of DC distribution network based on Romberg integral algorithm
In view of the problem of harmonic interference in DC bus and the aperiodic characteristics of DC side current and voltage waveform in DC distribution system, based on the in-depth study of the factors affecting the metering accuracy of traditional electric energy metering algorithm, this paper deeply analyzes the influence of a large number of harmonics in DC electric energy on the measurement results, and puts forward an improvement scheme for DC electric energy metering algorithm. The complex Newton Cotes algorithm and Romberg quadrature method are introduced into the electric energy measurement of DC distribution network. The high-order integration method is used to integrate the power to achieve high-precision electric energy measurement without increasing the measurement amount of the measurement algorithm. Compared with the traditional electric energy metering method, the algorithm proposed in this paper has simple structure and higher metering accuracy, which is suitable for the accurate measurement of electric energy in DC distribution system.
