Analysis of the impact of three-phase three-wire smart watt-hour meter loss fault on metering

Combined with the poor contact of the C-phase secondary conductor during the operation of the primary metering current transformer, the three-phase three-wire smart energy meter loses current, resulting in the abnormal operation parameters of the three-phase three-wire smart energy meter. Analyze the reasons for the abnormal operation data of the smart electric energy meter caused by the poor contact of the secondary circuit during the operation of the metering current transformer, calculate the amount of return and compensation during the poor contact of the secondary circuit of the current transformer, and propose measures to strengthen the design management, installation management and weekly inspection management of the electric energy metering device to ensure the safety, accuracy and reliability of the electric energy metering deviceForeword—In the operation of the electric energy metering device, it is necessary to take various effective measures to strengthen the operation management to ensure safety, accuracy and reliability, otherwise it will cause metering failures, and even potential safety hazards, affecting the safe and stable operation of the power grid, and also affecting the comprehensive line loss, electricity sales, power supply and other economic and technical indicators of power supply enterprises. In the actual production work, the poor contact of the secondary circuit of the metering current transformer occasionally occurs during the operation of the current transformer, and the poor contact of the secondary circuit of the current transformer not only affects the safe operation of the metering equipment, but also may even cause the open circuit of the secondary circuit of the current transformer, which seriously affects the safety of the power grid. Combined with the poor contact of the C-phase secondary conductor during the operation of the primary metering current transformer, the three-phase three-wire smart energy meter loses current, resulting in the abnormal operation parameters of the three-phase three-wire smart energy meter. Analyze the reasons for the abnormal operation data of the smart electric energy meter caused by the poor contact of the secondary circuit during the operation of the metering current transformer, calculate the amount of return and compensation during the poor contact of the secondary circuit of the current transformer, and put forward measures to strengthen the design management, installation management, and weekly inspection management to prevent it, so as to ensure the safety, accuracy and reliability of the electric energy metering device.