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Machine Learning Classifier for Supporting Generator’s Impedance-Based Relay Protection Functions

Author

Listed:
  • Petar Sarajcev

    (Department of Electrical Power Engineering, FESB, University of Split, R. Boskovica 32, HR-21000 Split, Croatia)

  • Dino Lovric

    (Department of Electrical Power Engineering, FESB, University of Split, R. Boskovica 32, HR-21000 Split, Croatia)

Abstract

Transient stability of the electric power system still heavily rests on a timely and correct operation of the relay protection of individual power generators. Power swings and generator pole slips, following network short-circuit events, can initiate false relay activations, with negative repercussions for the overall system stability. This paper will examine the generator’s underimpedance (21G) and out-of-step (78) protection functions and will propose a machine learning based classifier for supporting and reinforcing their decision-making logic. The classifier, based on a support vector machine, will aid in blocking the underimpedance protection during stable generator swings. It will also enable faster tripping of the out-of-step protection for unstable generator swings. Both protection functions will feature polygonal protection characteristics. Their implementation will be based on European practice and IEC standards. Classifier will be trained and tested on the data derived from simulations of the IEEE New England 10-generator benchmark power system.

Suggested Citation

  • Petar Sarajcev & Dino Lovric, 2024. "Machine Learning Classifier for Supporting Generator’s Impedance-Based Relay Protection Functions," Energies, MDPI, vol. 17(8), pages 1-16, April.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:8:p:1820-:d:1373327
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    References listed on IDEAS

    as
    1. Petar Sarajcev & Antonijo Kunac & Goran Petrovic & Marin Despalatovic, 2021. "Power System Transient Stability Assessment Using Stacked Autoencoder and Voting Ensemble," Energies, MDPI, vol. 14(11), pages 1-26, May.
    2. Khalfan Al Kharusi & Abdelsalam El Haffar & Mostefa Mesbah, 2023. "Adaptive Machine-Learning-Based Transmission Line Fault Detection and Classification Connected to Inverter-Based Generators," Energies, MDPI, vol. 16(15), pages 1-22, August.
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