In this paper, a hybrid tabu search and simulated annealing @/SA) approach is proposed to minimize the generator fuel cost in optimal power flow (OPF) control with multi-type of flexible AC transmission systems (FACTS) devices. The problem is decomposed into the optimal setting of FACTS parameters subproblem that is searched by the hybrid TSISA approach and the OPF with fixed FACTS parameters subproblem that is solved by the quadratic programming (QP), Four types of FACTS devices are used: thyristorcontrolled series capacitor (TCSC), thyristor-controlled phase shifter (TCPS), unified power flow controller (UPFC), and static var compensator(SVC). Test results on the modified IEEE 30 bus system with multi-type of FACTS devices indicate that the proposed hybrid TS/SA approach can obtain better solutions and require less CPU times than genetic algorithm, SA, or TS alone. Using nulti-type of FACTS devices results in less total generator fuel cost than using individual FACTS device.
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