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A Comprehensive Assessment of Fundamental Overcurrent Relay Operation Optimization Function and Its Constraints

Author

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  • Michele Rojnić

    (Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia)

  • Rene Prenc

    (Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia)

  • Hrvoje Bulat

    (Croatian Transmission System Operator Ltd., Kupska 4, 10000 Zagreb, Croatia)

  • Dubravko Franković

    (Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia)

Abstract

The optimization of overcurrent relays’ operation is a topic associated with protection coordination of distribution networks. Usually, this refers to medium-voltage networks, since they are protected by numerical relay devices, as opposed to low-voltage networks, where utility operators allocate fuses. Correct setting of relays and optimal coordination is becoming a serious challenge to Distribution Network Operators around the world, since their networks’ passive operation has been greatly altered in the past two decades. Distributed generation units, a growing liberalized electricity market and more stringent legislation for distribution network planning and operation by state regulatory bodies have all indirectly affected the evolving of protection philosophy for distribution networks. In this paper the traditional optimization problem of overcurrent relay operation will be addressed and critically examined from both a theoretical and practical point of view. Optimization function, constraints and relay parameters will all be observed and compared with solutions used in distribution networks, and their modifications and improvements will be proposed and elaborated in detail.

Suggested Citation

  • Michele Rojnić & Rene Prenc & Hrvoje Bulat & Dubravko Franković, 2022. "A Comprehensive Assessment of Fundamental Overcurrent Relay Operation Optimization Function and Its Constraints," Energies, MDPI, vol. 15(4), pages 1-20, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:4:p:1271-:d:745596
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    References listed on IDEAS

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    1. Muhammad Sulaiman & Waseem & Shakoor Muhammad & Asfandyar Khan, 2018. "Improved Solutions for the Optimal Coordination of DOCRs Using Firefly Algorithm," Complexity, Hindawi, vol. 2018, pages 1-15, February.
    2. Abdul Wadood & Tahir Khurshaid & Saeid Gholami Farkoush & Jiangtao Yu & Chang-Hwan Kim & Sang-Bong Rhee, 2019. "Nature-Inspired Whale Optimization Algorithm for Optimal Coordination of Directional Overcurrent Relays in Power Systems," Energies, MDPI, vol. 12(12), pages 1-27, June.
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    Cited by:

    1. Rene Prenc & Michele Rojnić & Dubravko Franković & Saša Vlahinić, 2022. "On the Development of Overcurrent Relay Optimization Problem for Active Distribution Networks," Energies, MDPI, vol. 15(18), pages 1-28, September.
    2. Tareq Foqha & Maher Khammash & Samer Alsadi & Osama Omari & Shady S. Refaat & Khaled Al-Qawasmi & Ali Elrashidi, 2023. "Optimal Coordination of Directional Overcurrent Relays Using Hybrid Firefly–Genetic Algorithm," Energies, MDPI, vol. 16(14), pages 1-28, July.

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