电压二次回路压降误差对供电线路电能计量的影响

Effect of Antihypertensive Errors of Secondary Circuit Voltage on the Electric Power Metering

电能计量装置由电能表、电流电压互感器及其二次回路构成。电能计量装置的综合误差包括:电能表的误差r0、互感器的合成误差εP、电压互感器二次回路电压降引起的合成误差rd。因此,电能计量装置的综合误差为:r=r0+εP+rd(%)。

Electric energy metering device is constituted of Watt-hour meter, electric current and voltage transforrmer and secondary circuit. The composite error of electric energy metering comes from error of electric energy meter （r0）, combination of transformer （εP）, the voltage decrease from secondary circuit of voltage transformer （rd）. As a result, the composite error of electric energy metering device is：r= r0＋εP＋rd （%）.