A Fast Algorithm for Detecting Loss of Synchronism of Generator during Electromagnetic Bombing

Electromagnetic bombs use a powerful electromagnetic pulse to destroy the target. When using this kind of bombs, due to presence of strong magnetic flux, high voltages and currents appear on the transmission lines, which are harmful and destructive for all kinds of electrical and electronic equipment. In this paper a new algorithm is introduced with which robustness of electrical network and its electrical components are preserved in a possible electromagnetic attack. In this work ,that used from Time-Based Improved Equal Area Criterion (TBIEAC) idea, it is assumed that protective relays of transmission lines are able to detect the over currents and send commands to circuit breakers for disconnecting related lines. Here, with the use of presented algorithm, fast power swings are scrutinized. Based on the results obtained, a decision is made to identify if the specified generator is subjected to a loss of synchronism or not. The simulation results show that the proposed method has higher response and precision compared with the previous methods.