Overview of Hybrid Power System
Hybrid power system (HPS) is an electricity generation system combining renewable energy resources and conventional generators. Several components will be utilized in a hybrid power system namely as: conventional generators (diesel generator, synchronous
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Abstract Hybrid power system (HPS) is an electricity generation system combining renewable energy resources and conventional generators. Several components will be utilized in a hybrid power system namely as: conventional generators (diesel generator, synchronous generator, DC generator for field excitation of synchronous generator), renewable energy resources (such as wind generator, photovoltaic system, etc.), power electronic converter, components’ controller, and also a supervisory control system to control the whole power system. In this chapter, an overview of hybrid power system and a brief description of important possible parts of a hybrid power system is introduce.
A. Ahmarinezhad (&) M. Abroshan Department of Electrical Engineering, Islamic Azad University, Shahre Rey Branch, Tehran, Iran e-mail: [email protected]; [email protected] M. Abroshan e-mail: [email protected] N. M. Tabatabaei Electrical Engineering Department, Seraj Higher Education Institute, Tabriz, Iran e-mail: [email protected] N. Bizon Faculty of Electronics, Communication and Computers, University of Pitesti, Pitesti, Romania e-mail: [email protected]; [email protected] N. Bizon Doctoral School, University ‘Politehnica’ of Bucharest, Bucharest, Romania
N. Bizon et al. (eds.), Analysis, Control and Optimal Operations in Hybrid Power Systems, Green Energy and Technology, DOI: 10.1007/978-1-4471-5538-6_1, Springer-Verlag London 2013
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1 Introduction Conventional generation systems such as thermal and nuclear power system are not a proper solution to electrification of remote areas due to economical and technical issues. Beside environmental problems such as emissions and greenhouse gas effects which are caused by conventional generation systems, the high cost of fuel, and construction of these power plants as well as efficiency and reliability are also serious problems of conventional generation systems. Hybrid power systems are an alternative solution to supply remote loads. Hybrid power systems utilize both conventional and renewable resources to supply demand. As regards this demand is usually at remote point; hence, the local renewable resources should be utilized. Diesel generators as a conventional generation system, wind turbine, photovoltaic cell, fuel cell, and its relevant components, and other renewable-based generation system may be used in a hybrid power system. Moreover, the integration of renewable energy resources into conventional system can bring reliability and efficiency to supply demand and the cost of components is expected to decline. However, further improvement in design and operation of hybrid power system is still needed. On the contrary, the most important problem of hybrid power systems is the complicated control system. Although each component has their own control system, a controller should supervise the actions of each individual controller. The action of supervising controller is called supervisory control and this system is called supervisory contro
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