SYNCHRONIZED PHASOR MEASUREMENTS OF A POWER-SYSTEM EVENT

The paper describes one of the first field measurements of positive se quence voltage phasors at key system buses during a recent switching o peration at Plant Scherer of the Georgia Power Company. The phasor mea surements were synchronized using time transmissions from the Global P ositioning System (GPS) satellites. The data show the first ever obser vation of power swings recorded via synchronized phasors at several po ints on an integrated power network. Measurements were made on the Geo rgia Power Company (GPC) system, the Florida Power and Light (FPL) sys tem, and on the Tennessee Valley Authority (TVA) system. The disturban ce was also simulated on a stability program. Results of the simulatio n, and a comparison with the observed field data are also included.