Optimal Sizing of an Isolated Hybrid Wind/PV/Battery System with Considering Loss of Power Supply Probability

In recent years, renewable energy technologies such as wind and solar have had significant growth. The primary purposes of integration of renewable resources are exploitation of free sources of energy as well as environmental advantages. Besides, they can be used close to the consumption centers in order to remove the necessity of high-voltage transmission lines. The use of such renewable sources along with an energy storage in the form of a hybrid system improves the system reliability. The importance of achieving a proper configuration of off-grid hybrid energy systems in order to reduce the implementation cost and improve the continuous supply of the loads as well as system reliability necessitates the employment of powerful software for optimization. Therefore, in the present study, the HOMER software is used to impose the best possible trade-off between cost and reliability (loss of power supply probability (LPSP)) for an off-grid hybrid energy system (consists of wind turbines, photovoltaic panels, and batteries) to supply a load in remote areas. The contribution of this work indicates calculating a solution for optimal configuration of hybrid system incorporating both economic and reliability (LPSP) aspects using HOMER software. The data of load, solar radiation and definite wind speed for Kurdeh village, located in the central district of the Larestan city were used. The system costs consist of initial investment, operational and maintenance of equipment and replacement costs. The considered prices are real and the used equipment is available in the market.