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. houlei,changzheng,caiyi,jiayonghui,chenyue.Method of DC distribution metering 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
Method of DC distribution metering based on Romberg integral algorithm
In view of the problem of harmonic interference in DC bus in DC distribution system and the aperiodic characteristics of DC side current and voltage waveform, based on the in-depth study of the factors affecting the measurement accuracy of traditional electric energy measurement 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 measurement 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 measurement method, the algorithm used in this paper has simple structure and higher measurement accuracy, and is suitable for the accurate measurement of electric energy in DC distribution system.
