A Preventive Transient Stability Control Strategy Through Individual Machine Equal Area Criterion Framework

Power system transient stability assessment (TSA) and control is a complex problem. TSA from the perspective of individual machine Kimbark curves forms distinctive approach. On other hand, constrained optimal power flow (TSC-OPF) has been adopted widely for determining preventive actions against instabilities under given contingency. This paper presents strategy control, which mainly integrates concepts methods based global TSC-OPF. The proposed workflow on most severely disturbed machines (MDM) their critical trajectories. These are utilized in deciding number TSC-OPF constraints, minimum upper time limit solution interval, security-based constraint machines. Further, application method explained with respect to stabilization three different instability scenarios viz., originates first swing instability, multi but leads as fault duration increases, never increases. IEEE 39 bus 118 test considered testing strategy. approach, expresses constraints terms some selective (i.e MDMs) trajectories not only approach also provide smooth reconciliation between economy operation security level while ensuring