Transients Instability Detection and Prevention Control Schemes

Effective real time monitoring and analysis of power system has become very important from the point of view of power system stability and security. Recent research in literature has identified that it is possible to determine the critical group of generators and hence predict the generators going out of synchronism. However, a clear mitigation scheme from a wide area perspective has not yet been identified. The main contribution of this paper deals with the post prediction of instability phase. After the identification of the critical generator or group of generators, effective actions such as load shedding should be initiated. The work targets in finding the optimal location where load is to be shed using the rotor angle algorithm and the Jacobian based distribution factor sensitivity