Abstract:

The basic working theory, the system structure and the component units of the synchronous phasor measurement system were introduced. The basic

functions of the phasor measurement unit for generator set and the phasor measurement unit for transmission line were analyzed. The application of the phasor

measurement device in the power grid wide area monitoring and control, the measurement and monitoring of the generator powerangle, the monitoring of low

frequency oscillation, the monitoring of the P-Q operation curve and other aspects was expounded.

Key words: synchronous phasor measurement, power-angle, low-frequency oscillation, recorded data, on-line monitoring