Patent ID: 8155901
Filing Date: 2012-04-10
Classification: G01R,H02J,Y02E,Y04S

Abstract:
1. A method of determining instability in an electrical power system serving at least first and second geographic areas, each geographic area comprising at least one generation source, the method comprising the steps of: a) receiving first synchrophasor measurements from a first generation source in the first geographic area; b) receiving second synchrophasor measurements from a second generation source in the second geographic area, the second generation source being geographically separated from the first generation source; c) comparing the first synchrophasor measurements to the second synchrophasor measurements in a first time period to yield an impact energy and a reverse energy; and d) transmitting a remedy control command to the first generation source, the second generation source or both the first generation source and the second generation source if the reverse energy is greater than the impact energy, wherein the remedy control command transmitted is a trip generator command to take the first generation source, the second generation source or both the first generation source and the second generation source offline.