Abstract
Develop a monitoring and management system based on a cloud platform, and finally implement related applications such as abnormal monitoring of the electric energy meter wiring process, wiring fault diagnosis, line aging assessment, and power outage warning analysis on the cloud platform, which can promptly warn the occurrence of power outages and comprehensively improve high-quality power supply services Level. Therefore, this paper proposes a method for phase line and neutral line impedance estimation of 0.4kV low voltage distribution network based on intelligent electricity meters. In this paper, the voltage of each sequence, current of each sequence, and information of complex power of each sequence of each node are extracted by intelligent electricity meter, and then the measurement of line impedance is completed piecewise. Finally, the impedance measurement model of the 0.4kV low-voltage distribution network was built. The simulation verification of the line impedance measurement was completed through the effective cooperation with the high-precision and high-synchronous sampling smart electricity meter supporting the impedance measurement and the acquisition terminal supporting the of the impedance measurement. The simulation results show that the line impedance measurement error is small, and the prediction of line loss and impedance trend can be completed effectively.
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