Assessing the Reliable Size of Distributed Energy Resources in Islanded Microgrid Considering Uncertainty

Distributed energy resources have enormous potential and can meet the present world energy demand. The aim of this paper is minimization of net present cost of microgrid which involves investments, replacement, and operation and maintenance over its 20 years of operation. Prices are all empirical and components are commercially available. The microgrid considered in this paper consists of wind turbine (WT), photovoltaic array (PV), micro turbine (MT) and battery storage. A Particle Swarm Optimization algorithm is used to solve the optimization problem. System planning based on stipulated reliability criteria leads to robust architectures which can meet the consumers' requirements. This paper presents a method for determining sizing of resources from the available types of DER. Reliability is a measure of the system's capability to serve the demand. There are various indices which quantify the reliability of a micro grid system. Since the wind is unstable and variable energy source, and behave far differently than conventional sources, in this paper, we consider that effect as uncertainty on optimal size of WT. At last, a simulation result shows the effectiveness of the suggested microgrid.