The V/V wiring voltage transformer is widely used in 6 kV,10 kV and other neutral point ungrounded sys-tems,mainly applied in three-phase and three-wire power metering devices,which are widely used in the production by 10 kV special transformer users with high-voltage power supply and high-voltage terminal metering. The polarity reverse wiring of the A-phase current of the three-phase and three-wire intelligent electricity meter of such users causes anomalies in such parameters of the meter as the current,power factor and power,resulting in metering inac-curacy. By means of various curve data of the electricity consumption information collection system,in combination with the load properties and filed test data,this paper studies the metering parameter data of the meter in the fault state,analyzes the cause of the failure,corrects the wrong power,and puts forward detailed preventive measures,to ensure safe,accurate and reliable operation of the power metering device as well as effectively avoiding power er-rors.
维普
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