Optimal Load-Shedding Control of a Microgrid Power System

In this paper, an intelligent optimal control method is applied to solve the load-shedding problem which has an effect of reduction in fuel cost for the operating period of a diesel generator system unit integrated into a microgrid (MG) system. The optimal control has been implemented firstly to reduce the operating cost of the diesel generator and secondly to secure the proper operation of the distribution system by keeping the power balance of the MG system within a positive range of its acceptable value with the objective to meet the maximum demand side capacity. This paper has implemented a new intelligent method to solve the load shedding and saving cost of the diesel generator fuel problems in MG power system. The application of additional renewable energy systems in an MG power system has an impact on the reduction of the fuel cost of the diesel generator and implies at the same time adjustments in the fluctuations in relative excess energy generation, which has been maintained within a range of approximately thirty percent of the normal value of supply side of the MG power system.