Optimal coordination of overcurrent relays using a modified particle swarm optimization

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Abstract

In this paper, a new problem formulation is proposed to calculate the optimal relay settings of directional overcurrent relays in power systems. The proposed coordination problem is formulated as a mixed integer nonlinear problem to take into account the discrete values for the pickup current settings. A modified particle swarm optimization (PSO) algorithm is proposed to calculate the optimal relay settings. A comparison between the original particle swarm optimization based method, the proposed PSO algorithm and the GAMS solver is presented.

Original languageBritish English
Pages (from-to)988-995
Number of pages8
JournalElectric Power Systems Research
Volume76
Issue number11
DOIs
StatePublished - Jul 2006

Keywords

  • Directional overcurrent relays
  • Optimization techniques
  • Particle swarm optimization
  • Power system protection

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