Online Islanding Alert
Real-time situational awareness tools are of critical importance to power system operators, especially during emergencies. Knowledge of the scope of facilities impacted, as well as the duration of their dependence on backup power, enables emergency response officials to plan for contingencies and provide a better overall response. Based on the measurement data acquired by the Frequency Disturbance Recorders (FDRs) deployed in the North American power grids, an islanding detection method is proposed and implemented. This method monitors the critical electrical loads and detects the transition of these loads from an on-grid operation to an islanding operation. The details of the detection algorithm are presented in Fig. 1, and alerting system architecture is shown in Fig. 2.
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