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. gaoyuxiang,caiqixin,xuwenlin.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 of electric energy measurement results. Therefore, this paper studies the calculation of traction load negative sequence power flow and the adjustment method of electric energy measurement. First, analyze the negative sequence power distribution of the traction load, combine the analysis results with the correlation of the traction load, use Copula theory to construct a traction load negative sequence power flow analysis model, and calculate 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 measurement is analyzed, and an electric energy measurement adjustment scheme based on power factor theory is proposed. The test results show that the method in this paper has a good calculation effect of negative sequence power flow, and the calculation result of negative sequence power flow is highly reliable, and the maximum difference between the actual results is less than 0.0006, and the value of the power factor is 0.7 , Can complete the electric energy measurement reasonably and reliably, and ensure the accuracy of the measurement result.
