Optimal Dispatch Program for Thermal Units in Power Systems with High Wind Farm Penetration and Flexible Loads
Ali Heydari
1
(
Department of Electrical Engineering, Gorgan Branch, Islamic Azad University, Gorgan, Iran
)
Reza Ebrahimi
2
(
)
Mahmood Ghanbari
3
(
Department of Electrical Engineering, Gorgan Branch, Islamic Azad University
)
Keywords: Optimal dispatch thermal units, Wind farm, Flexible loads, Lightning Search Algorithm,
Abstract :
This paper proposes a stochastic model for Economic Dispatch (ED) in power systems incorporating renewable energy sources and flexible loads, taking into account associated uncertainties. The model is scenario-based and utilizes Monte Carlo simulation to determine scenarios with unique weighting factors for each scenario. To solve the optimization problem, a new hybrid algorithm named hLSA-PSO is developed, in which the parameters of the Particle Swarm Optimization (PSO) algorithm are adjusted by the Lightning Search Algorithm (LSA). The efficiency of this algorithm is validated by comparing results obtained from solving benchmark functions with GGO, PSO, and LSA algorithms. Simulation studies show that the proposed model is executed in three different modes: without considering uncertainties and load response, considering uncertainties without the participation of flexible loads, and considering both factors. The results indicate that considering uncertainties increases operational costs by 2.6%, and due to uncertainties, the share of wind resources in meeting the load is reduced. On the other hand, the participation of flexible loads reduces production during peak hours and decreases costs. The hLSA-PSO algorithm outperforms other methods in all cases.
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