Techno-Economic Design of a Stand-Alone Renewable Energy System

Abstract

This paper presents a method for the design of a stand-alone renewable energy system supplying an isolated load. In this work, the stand-alone system consists of wind generator, battery storage and backed up by a diesel generator. However, all other forms of renewable energy, storage and backup systems can be included. The proposed method aims at securing the energy needs of the load most economically and reliably through determining the optimum component sizes. A linear programming model is developed to determine the optimum sizes of system components based on an average day data. Day to day variations are then represented as a stochastic Markov process where an average cycle of the system is constructed and utilized for modifying component sizes to assure the desired level of reliability.