Abstract—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
—Distributed energy resources, particle swarm
optimization, reliability, uncertainty.
The authors are with the Electrical Engineering Department, K.N.Toosi
University of Technology, Tehran, Iran (e-mail: f.tooryan@ sina.kntu.ac.ir,
Cite: F. Tooryan, S. M. Moghaddas-tafreshi, S. M. Bathaee, and H. Hassanzadehfard, "Assessing the Reliable Size of Distributed Energy Resources in Islanded Microgrid Considering Uncertainty," International Journal of Engineering and Technology
vol. 4, no. 5, pp. 554-557, 2012.