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A New Objective Function for Optimal Coordination of Directional Over-current Relays

  • Jay ShahEmail author
  • Nirmal Khristi
  • Vipul N. Rajput
  • Kartik S. Pandya
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 608)

Abstract

This paper presents a novel objective function to obtain the optimum relay settings of directional over-current relays (DOCRs). The proposed improved objective function (IOF) is developed to solve the problems of previously proposed OFs. The proposed research work modifies the previous OFs by introducing a new weighting factor and adding a new term, for fixing mis-coordination problem and minimizing the operating times of both primary and backup relays. The performance of the proposed IOF is evaluated by using 3- and 8-bus test systems. The simulation results reflect the superiority of IOF, compared to other variety of OFs presented in the literature.

Keywords

Genetic algorithm Objective function Over-current relay Power system protection Relay setting Relay coordination 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Jay Shah
    • 1
    Email author
  • Nirmal Khristi
    • 2
  • Vipul N. Rajput
    • 1
  • Kartik S. Pandya
    • 3
  1. 1.Dr. Jivraj Mehta Institute of TechnologyAnandIndia
  2. 2.Amul DairyAnandIndia
  3. 3.Charotar University of Science and TechnologyChangaIndia

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