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Reactive Power Dispatch Optimization with Voltage Profile Improvement Using an Efficient Hybrid Algorithm ^{†}

^{1}

QUERE Laboratory, Electrical Engineering Department, University Ferhat Abbas Setif 1, Setif 19000, Algeria

^{2}

QUERE Laboratory, Optics and fine mechanics Institute, University Ferhat Abbas Setif 1, Setif 19000, Algeria

^{3}

LAMIH-UMR CNRS, University of Valenciennes, 59313 Valenciennes, France

^{*}

Author to whom correspondence should be addressed.

^{†}

The present work is an extension of the paper “Hybrid PSO-tabu Search for the Optimal Reactive Power Dispatch Problem” presented at the IECON 2014-40th Annual Conference of the IEEE Industrial Electronics Society, 29 October–1 November 2014, Dallas, TX, USA.

Received: 12 July 2018 / Revised: 12 August 2018 / Accepted: 13 August 2018 / Published: 16 August 2018

(This article belongs to the Special Issue Optimization Methods Applied to Power Systems)

This paper presents an efficient approach for solving the optimal reactive power dispatch problem. It is a non-linear constrained optimization problem where two distinct objective functions are considered. The proposed approach is based on the hybridization of the particle swarm optimization method and the tabu-search technique. This hybrid approach is used to find control variable settings (i.e., generation bus voltages, transformer taps and shunt capacitor sizes) which minimize transmission active power losses and load bus voltage deviations. To validate the proposed hybrid method, the IEEE 30-bus system is considered for 12 and 19 control variables. The obtained results are compared with those obtained by particle swarm optimization and a tabu-search without hybridization and with other evolutionary algorithms reported in the literature.