高雨翔,蔡奇新,徐文林.基于牵引负荷负序功率潮流计算及电能计量方式研究[J].电测与仪表,2023,60(1):193-200. Gao Yuxiang,Cai Qixin,Xu Wenlin.Study on negative sequence power flow calculation and electric energy metering mode of traction load[J].Electrical Measurement & Instrumentation,2023,60(1):193-200.
基于牵引负荷负序功率潮流计算及电能计量方式研究
Study on negative sequence power flow calculation and electric energy metering mode of traction load
Asymmetric traction load will cause negative sequence power flow and directly affect the reliability and accuracy of electric energy metering results. Therefore, this paper studies the calculation of traction load negative sequence power flow and the adjustment method of electric energy metering. It analyzes the negative sequence power distribution of the traction load, combining the analysis results with the correlation of the traction load, adopts Copula theory to construct a traction load negative sequence power flow analysis model, and calculates the power flow results, distribution and flow direction of the positive sequence power of the traction load. According to the calculation results, the influence of negative sequence power flow of traction load on electric energy metering is analyzed, and an electric energy metering adjustment scheme based on power factor theory is proposed. Finally, the test results show that the method proposed in this paper has a good calculation effect of negative sequence power flow, and the maximum difference between the actual results is less than 0.000 6, and the value of the power factor is 0.7, which can complete the electric energy metering reasonably and reliably, and ensure the accuracy of the metering result.
