Minimization of load shedding during contingency conditionsis solved as an optimization problem. As a new topic, instead oflocal load shedding, total load shedding of a large power system isconsidered. Power generation rescheduling is considered to minimizethe load shedding, as well. Different importance factors for busesare also considered. The linear programming method (LP) is used tosolve this problem in a short period of time without considering somepower system constraints. Particle swarm optimization (PSO) is alsoused to solve the problem by considering all power system constraints,but with a longer solving time. Finally, a new method, the sequentialuse of LP and PSO, is proposed, which is faster than PSO and considersall constraints. The IEEE 14 bus test system is used to compare theperformance of the mentioned methods and a comparison of the proposedalgorithm and genetic algorithm is accomplished.
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