分析了低负荷条件下电流互感器、电能表以及计量二次回路对电能计量准确性的影响,并提出要合理选择电流互感器计量绕组变比、保证电能表的启动电流符合要求、计量回路中不接入与计量无关的设备和端子等应对措施,确保低负荷下电能计量的准确性。
Analyzed the low load current transformer,electric energy meter and measuring voltage circuit influence on electric energy metering accuracy,and proposed the reasonable selection of current transformer metering ratio and ensured the meter starting current to meet the requirements,and ensured equipment and terminals not being connected to the measurement in the measurement loop,ensured the electric energy metering accuracy under low load.