Development of multi-function real time phase angle monitoring system and its application in Northwest China Power Grid

The phasor measurement technology based on Global Position System(GPS) is a kind of rapidly developed technology in recent years.By using this technology,the relative angel between key substations and generator rotors can be monitored,the data can be collected and transferred to dispatching center,the results with that come from simulation program,and power system characteristics can be analyzed.Phasor measurement technology is now applied in Northwest Power Grid,and has reached the basic purpose of synchronous phasor measurement,from which the data is worth of analyzing.This technology is necessary to extend its application in Northwest Power Grid.