Preprint Article Version 1 This version is not peer-reviewed

A Novel Constraint Handling Approach for the Optimal Reactive Power Dispatch Problem

Version 1 : Received: 26 July 2018 / Approved: 27 July 2018 / Online: 27 July 2018 (02:56:22 CEST)

A peer-reviewed article of this Preprint also exists.

Villa-Acevedo, W.M.; López-Lezama, J.M.; Valencia-Velásquez, J.A. A Novel Constraint Handling Approach for the Optimal Reactive Power Dispatch Problem. Energies 2018, 11, 2352. Villa-Acevedo, W.M.; López-Lezama, J.M.; Valencia-Velásquez, J.A. A Novel Constraint Handling Approach for the Optimal Reactive Power Dispatch Problem. Energies 2018, 11, 2352.

Journal reference: Energies 2018, 11, 2352
DOI: 10.3390/en11092352

Abstract

This paper presents an alternative constraint handling approach within a specialized genetic algorithm (SGA) for the optimal reactive power dispatch (ORPD) problem. The ORPD is formulated as a nonlinear single-objective optimization problem aiming to minimize power losses while keeping network constraints. The proposed constraint handling approach is based on a product of sub-functions that represents permissible limits on system variables and that includes a specific goal on power loss reduction. The main advantage of this approach is the fact that it allows a straightforward verification of both feasibility and optimality. The SGA is examined and tested with the proposed constraint handling approach and the traditional penalization of deviations from feasible solutions. Several tests are run in the IEEE 30, 57, 118 and 300 bus test power systems. The results obtained with the proposed approach are compared to those offered by other metaheuristic techniques reported in the specialized literature. Simulation results indicate that the proposed genetic algorithm with the alternative constraint handling approach yields superior solutions when compared to other recently reported techniques.

Subject Areas

genetic algorithms; reactive power dispatch; metaheuristic optimization; penalty functions; constraint handling

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