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This paper proposes to use a combinatorial optimization technique, the branch and cut algorithm, to design an hybrid isolated microgrid in the Colombian community of Unguia. In addition, this paper presents a comparison between the designs obtained with the branch and cut algorithm, the software HOMER and a genetic algorithm for the Unguia community. The proposed microgrid includes two diesel generators...
Renewable energy sources (RES) have been gaining an increasing importance in recent years. However, the integration of these resources into the current distribution systems is considered a challenging task due to two limitations. These two limitations are the cost of equipment and the intermittency of the generated electrical power. Distributed generation of wind-photovoltaic hybrid systems connected...
Sustainable development of electricity source is currently the aim of electrical engineering and is complex because of both technological issues and the operational challenges. Regulated supply can be extended only with bulk storage facilities. A method of solution is proposed to deal with optimal power flow in a power system where the extensive use of wind and solar PV system is envisaged. Multi-criteria...
The current energy infrastructure heavily depends on fossil energy, which will be mostly depleted beyond 21st century. Another built-in disadvantage of fossil energy is the pollutant and green house gas emission. It is time to reform the environment-degrading energy infrastructure into a sustainable and resilient energy infrastructure such that it is more environmental friendly. Compared with fossil...
Wind energy is one of the most popular sources for renewable energy. Worldwide, but especially in Germany, an extensive growth of installed wind energy plants can be traced. In Germany, the installed power of wind energy plants in 2007 was about 22 GW. The aim of the government is to raise this amount to 47 GW to the year 2020, what will be equal to 60 % of the total load of Germany. One problem is...
This work describes an economic analysis of the inclusion of pumped storage in a small island system that has abundant renewable energy available but that at times cannot accept all of this power because of limits imposed by security criteria. The question of whether or how much pumped storage to include is addressed by formulating a linear programming optimization problem. The stochastic nature of...
With the increased use of wind energy as a renewable source, several networks across the world have reached a situation wherein wind power exceeds demand at a local level. Shutting down wind generation during such times is not a comfortable situation as increased renewable penetration is sought largely to reduce emissions from fossil fuelled plants. We propose a number of alternative topologies that...
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