Abstract
One of the most important conditions for economic and secure operation of electric power system is the optimal reactive power dispatch (ORPD). The ORPD is achieving by appropriate coordination of the equipments which manage the reactive power flows to minimize the real power loss and/or improve the voltage profile of the power system. Mathematically, the ORPD problem can be formulated as a nonlinear optimization problem with constraints. In this paper, a hybrid PSOGSA algorithm is proposed for solving the ORPD problem. The results obtained by hybrid PSOGSA on standard IEEE 30-bus and IEEE 118-bus test systems are compared with other meta-heuristic optimization methods. In addition, a critical review of the ORPD results published in the recent literature is presented also.
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