Electric Energy Metering Influence Factors Of Metro Power Supply System Analysis And Countermeasure Research

Through the analysis of the actual subway power substation voltage amplitude,current amplitude, harmonic content with running power parameters such as variationof load conditions, collate and analyze the distribution of actual case harmoniccontent of size, rapid load changes, the current changes in characteristics, powerchanges, etc., through a number of specific experiments to extract the abstract studyof the rapidly changing load waveform and harmonic measurement meter foraccuracy affected. Ensure fair energy metering accuracy and energy trading,maintaining the interests of both the user and the power companies.In a specific embodiment of this paper, the selected too wire Shenzhen Pacificsubstation as the analysis object, using a three-phase power quality analyzerFluke1760against recording scene. Data collected for a month, which selected oneweek of continuous data were analyzed, summarized the voltage, current and powervariation as a whole, are summarized under the actual conditions of voltage, currentand power harmonics waveform. Also analyzed the differences between the threedifferent harmonic energy measurement mode, based on the nonlinear load powerdistribution characteristics, refer to the relevant standards, harmonic test conditionsspecified in international recommendations, choose the appropriate test methods to doexperiments. In addition, the project by recording the voltage, current and powerfactor over time change the situation, analyze the dynamic changes of voltage, currentand phase, summed up the current dynamic waveform and phase dynamic waveforms.Under the current dynamic waveform meter done experimentally.