Economic Power Wheeling Using MW-MILE Method Through Gravitational Search Algorithm

The deregulation has brought many vital fundamental alterations in the electric power industry. Previously the vertically integrated structure of power system providing the three services generation, transmission, and distribution by a single party. After deregulation, the three service sectors may be operated (provided) by different companies or parties. As such the power can be generated by a company, it could be sold to any other company for distribution at load centers and it may be transmitted by a third party from the generation point of a selling point (load center/buyer), i.e., power wheeling from the generation point to the distribution point (buyer). In this paper, it is proposed to consider the economic power wheeling from the generation point to the distribution point through Gravitational Search Algorithm (GSA) based on the concept of MW-Mile method under two operating conditions with and without transmission line power limit. The method has been applied to a four-grid power system. The result of GSA method is compared with the result obtained by Particle Swarm Optimization (PSO) method. It has been shown that the computational time of GSA is lower than that of PSO which makes the performance of GSA superior than PSO for the proposed approach..