System for metering electricity by integrating in-phase current
View Patent ↗There is disclosed a method of metering electricity that includes calculating a first accumulated in-phase current indicative of a non-voltage component of energy flow to one or more customer premises during a period of time by a distribution transformer meter (DTM) coupled to a distribution transformer (DT) and calculating second accumulated in-phase current (AIPC) indicative of a non-voltage component of energy flow during a period of time by a feeder current meter coupled to a feeder line. The method further includes transmitting the first AIPC and the second AIPC to a data collecting computing device and comparing the first AIPC with the second AIPC to determine if electricity theft has occurred.
1. A method of metering electricity, comprising:
calculating a first accumulated in-phase current indicative of a non-voltage component of energy flow to one or more customer premises during a period of time by a distribution transformer meter (DTM) coupled to a distribution transformer (DT);
calculating a second accumulated in-phase current (AIPC) indicative of a non-voltage component of energy flow during a period of time by a feeder current meter coupled to a feeder line; and
transmitting the first AIPC and the second AIPC to a data collecting computing device;
comparing the first AIPC with the second AIPC to determine if electricity theft has occurred.
2. The method of claim 1 , wherein the comparing step comprises converting the first AIPC and the second AIPC to a first and second normalized active energy (NAE) value, respectively.
3. The method of claim 2 , wherein the converting step further comprises multiplying the first AIPC and the second AIPC by an operating voltage of the DTM and the FCM, respectively.
4. The method of claim 3 , further comprising detecting theft if the first NAE value is not substantially equal to the second NAE value.