Disturbance detection of wide area power systems by use of short-term synchrophasor data

Phasor measurement units have been installed on the power systems for grasping system static and dynamic behavior over wide area. Synchrophasor brings effective information of the power system disturbances such as the sudden supply and demand imbalance of the system. However, huge amount of synchrophasor data over the wide area power systems requires some techniques to extract the disturbances. In this paper, a screening scheme of the power system disturbances and their occurring area is proposed based on the experiences on actual data handling of the synchrophasor data. The proposed scheme would be suitable for online application because of using short-term data set of the synchrophasors.