Patent ID: 7904261

Claim:
A method for using phasor measurements in state estimation, comprising: (a) acquiring a plurality of positive sequence voltage and current phasor measurements from a plurality of phasor measurement units, and sending said phasor measurements to a computer; (b) designating a reference positive sequence voltage phasor measurement from said acquired phasor measurements; (c) said computer adjusting said acquired phasor measurements to account for said reference phasor measurement by subtracting a phase angle value from a pre-selected reference phasor measurement from each of said acquired phasor measurements; (d) calculating complex power having a real component and an imaginary component, using said corrected positive sequence voltage and current phasor measurement; (e) using said real component of said complex power as a calculated mega-watt and said imaginary component of said complex power as a calculated mega-volt-ampere; and (f) using said mega-watt and mega volt-ampere calculations in a state estimation algorithm.