三相三线电能计量装置的错接线浅析

False Connection of Three-phase Three-wire Electrical Energy Metering Device

计量装置由于电流、电压互感器相序、极性等的错接线,将造成电能计量差错。结合近年来在实际工作中遇到的一起三相三线电能计量装置错接线事例,通过向量分析、有功表达式的推导,进而求出该种错接线对电能计量的影响。

False connection causes electrical energy metering device to measure in error, when installation of new device. This article introduces some examples of false connection. The wrong connection on the impact of energy metering is calculated by analysis of vector and expressions. At last, types of false connection are summed up, and the methods of identification for three-phase three-wire energy metering device are put forward.