Optimal Energy Management of a Hybrid Power Supply System for Off-Grid Applications with Moth-Flame Optimization Algorithm

Issues related to hybrid power systems is among the issues that are of interest to researchers in the field of power systems. Hence in this Thesis, a hybrid power system in off-grid mode is studied from the perspective of optimal management. Photovoltaic systems and wind turbines as renewable energy sources with predicted production based on solar radiation and wind speed in the region have been considered. Diesel generators and battery respectively backup systems and energy storage systems are used. For solving the optimization problem in addition to the other methods that used in other researchs to determine the optimal size components, an innovative approach by combining heuristic Moth-flame algorithm and mathematical quadratic programming algorithm is used; so that the selection of the optimal size of components by Moth-flame algorithm and optimal power flow in during operation that is a part of the process of determining the optimal size of the components quadratic programming algorithm is done. Results have been analysis in several scenarios so that in each scenario, different conditions of operation of the hybrid system is investigated. By running code in MATLAB software and compare the results the effectiveness of the method presented in this thesis is proven to improve results. Also by using the annual hourly data, The optimal size of the components of a hybrid power system to meet the electrical demand of Faculty of Technical and Engineering of Mohaghegh Ardebili University as a practical study has been found and The possibility of studying on indicators of reliability of the hybrid power system is provided.