Optimal Scheduling of a Renewable-based Micro Grid Considering Reliability Effect
Subject Areas : renewable energy
Amir Ghaedi
1
(
Department of Electrical Engineering, Dariun Branch, Islamic Azad University, Dariun, Iran
)
Reza Sedaghati
2
(
Department of Electrical Engineering, Beyza Branch, Islamic Azad University, Beyza, Iran.
)
Mehrdad Mahmoudian
3
(
Department of Electrical Engineering, Iran University of Science and Technology, Iran, Tehran.
)
Keywords: reliability, Microgrid, PSO Algorithm, Variation, optimal scheduling,
Abstract :
In the microgrids, it can be used from the renewable energy resources (RERs) such as photovolta-ic panels, wind turbines, wave energy converters and current type tidal turbines to reduce the greenhouse gas (GHG) emission arisen from fossil fuel-based generation units. However, the generated electrical power of these RERs are dependent on the wave height and wave period, solar radiation, the wind speed, and the tidal current speed. Due to the wide variation in the RERs, the generated electrical power of these generation units changes a lot and so, to supply the local load in the isolated microgrid, the conventional generation units and the energy storage sys-tems (ESSs) can be utilized. In this paper, optimal scheduling of a microgrid containing conven-tional generation units, ESS and RERs including wind turbines, photovoltaic panels, current type tidal turbines and wave energy converters is performed to determine the generated power of each generation unit provided that the cost function is minimum. In the cost function, the operation cost of the generation units based on fossil fuel and the penalty cost associated to the load cur-tailment as the reliability cost are considered and using of the particle swarm optimization (PSO) algorithm, the cost function is minimized. To study the capability and effectiveness of the pre-sented approach, the numerical results associated to the optimal scheduling of a microgrid con-taining battery, RERs, and conventional units are presented.
