Multiagent based differential evolution approach to optimal power flow |
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Authors: | S. Sivasubramani K.S. Swarup |
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Affiliation: | Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai 600036, India |
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Abstract: | This paper proposes a new differential evolution approach named as multiagent based differential evolution (MADE) based on multiagent systems, for solving optimal power flow problem with non-smooth and non-convex generator fuel cost curves. This method integrates multiagent systems (MAS) and differential evolution (DE) algorithm. An agent in MADE represents an individual to DE and a candidate solution to the optimization problem. All agents live in a lattice like environment, with each agent fixed on a lattice point. In order to obtain optimal solution quickly, each agent competes and cooperates with its neighbors and it can also use knowledge. Making use of these agent-agent interaction and DE mechanism, MADE realizes the purpose of minimizing the value of objective function. MADE applied to optimal power flow is evaluated on 6 bus system and IEEE 30 bus system with different generator characteristics. Simulation results show that the proposed method converges to better solutions much faster than earlier reported approaches. |
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Keywords: | Multiagent systems Differential evolution Optimal power flow Non-smooth cost function |
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