All utilities have responsibility to provide uninterrupted power supply to all consumers and to recover the bill amount for survival of the utility. In all utility, Industrial consumers supplying the power on high voltage level. For the metering of the same, instrument transformers are used in coordination with the energy meter to record the consumption of that consumer. These instrument transformers and energy meter have inherent errors, due to which no any metering system record the accurate energy consumption. For correct recording of the energy consumption, compensation to the errors is...