Patent ID: 9217766
Filing Date: 2015-12-22
Classification: G01R

Abstract:
1. A method for measuring active and reactive powers of an alternating current, comprising: receiving, by a processor, a first signal and a second signal, wherein the first signal is based on a measurement of a current from an at least one electronic measuring instrument and the second signal is based on a measurement of a voltage from the at least one electronic', measuring instrument, and wherein the current includes a phase offset with respect to the voltage; calculating, by the processor, an active power and reactive power based on the first and second signals; and calibrating, by the processor, the calculated active and reactive, powers by first and second constants to reduce the phase offset, the calibrating including: wherein the first and second signals include the phase offset, and wherein the first and second constants respectively correspond to a cosine value and a sine value of the phase offset.