Frequency-based real-time line trip detection and alarm trigger development

Wide-area measurement systems have made it possible for operators to monitor the dynamics of the whole power system in real time. By utilizing the FNET/GridEye system in the distribution network, many synchrophasor-based event detectors have been developed. This paper focuses on the development of a real-time application for line trip detection. A frequency-based algorithm is selected to identify line trip events by assembling low-pass filters and peak detectors. The detection and alarm trigger application is implemented using Adapters based on the openPDC platform. The performance of this application is tested with historical line trip events.