Abstract
This paper presents the evaluation and control of renewable energy sources based micro-grid system having solar photovoltaic, wind turbine generator, fuel cell and diesel engine generator. A battery storage system has also been installed to provide unintrupted power supply and to store excess power. The proposed micro-grid system is simulated on Matlab/Simulink software and the performance has been analysied with two cases considering different environmental conditions to check the optimal performance of the system. In the first case, the solar photovoltaic, fuel cell, diesel engine generator and battery storage system has been considered and in the second case, the solar photovoltaic source is replaced by the wind turbines. For both the cases, simulation has been done for 300 seconds to findout the optimal fulfilment of the demand. The time domain analysis has been done by varying the solar irradiance and wind speed in respective cases to check the system performance. This work shows the efficient control of various distributed energy resources in the micro-grid system and meeting the load demand efficiently.
Highlights
The energy prototype is changing throughout the world from conventional energy sources to the renewable energy sources (RES) as they have potential to handle the major challenges related to energy
The different arrangements of proposed microgrid system have been considered here which consist of combination of three wind turbine (WT), one solar PV system, two Fuel cell (FC), battery storage system (BSS) and one diesel engine generator
If Ppv is less than 1.0 p.u. i.e. supplied power (Ps), diesel engine generator (DEG) will start to generate the power to fulfill the demand, a smaller part of PV is sent to aqua electrolyzer (AE) which will generate available power to FC
Summary
The energy prototype is changing throughout the world from conventional energy sources to the renewable energy sources (RES) as they have potential to handle the major challenges related to energy. High investment cost is a major hurdle to develop these micro-grid systems still this is an advantageous for developing countries for off-grid power generation with no negative impact to the environment [1]. The RES based micro-grid (MG) system incorporates more than one type of energy sources. Appropriate combination of different types of energy sources can be used for rural electrification creating a modern micro-grid system. Availability of fuel, location and the installation cost are some of the major factors which determines the effectiveness of stand-alone micro-grid system [2]. The concept of MG system is very useful as the active power losses can be reduced by which the generation cost can be minimized and the voltage profile can be maintained [3], [4]
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