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WAMS-Supported Power Mismatch Optimization for Secure Intentional Islanding

Author

Listed:
  • Jovancho Grozdanovski

    (Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia)

  • Rafael Mihalic

    (Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia)

  • Urban Rudez

    (Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia)

Abstract

It is expected that a coordinated operation of several system integrity protection schemes will become a necessity in the future. This research represents an innovative strategy for coordinating under-frequency load shedding and intentional controlled islanding schemes for improving electric power system stability and resilience. In the great majority of real-world cases, both approaches follow conventional tactics, i.e., disconnecting a fixed number of feeders at predefined frequency thresholds and isolating a predefined area of a power system regardless of the actual conditions. Under the newly arisen network conditions in which weather-dependent distributed energy sources introduce a significant level of intermittency, conventional approaches need to be upgraded in order to retain a high level of power system operation security. In this paper, a mixed-integer linear programming approach is used to adjust the island size, including/excluding additional substations according to the available amount of generation in the region. The fine-tuning of the power rebalancing is achieved by potentially blocking selected load shedding stages. This minimizes the power imbalance of the newly formed islands, which helps to reduce the number of partial or even total blackouts and also accelerates the power system’s restoration process. The optimization approach was tested on a generic IEEE 39-bus network and shows promising results along with the capability of coping with real-world applications using wide-area monitoring systems as a source of real-time measurements. The results also indicated the importance of appropriate load modelling since both voltage and frequency dependence are recognized to have a significant effect on intentional controlled islanding.

Suggested Citation

  • Jovancho Grozdanovski & Rafael Mihalic & Urban Rudez, 2021. "WAMS-Supported Power Mismatch Optimization for Secure Intentional Islanding," Energies, MDPI, vol. 14(10), pages 1-13, May.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:10:p:2790-:d:553399
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    References listed on IDEAS

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    1. Porzio, Giacomo Filippo & Nastasi, Gianluca & Colla, Valentina & Vannucci, Marco & Branca, Teresa Annunziata, 2014. "Comparison of multi-objective optimization techniques applied to off-gas management within an integrated steelwork," Applied Energy, Elsevier, vol. 136(C), pages 1085-1097.
    2. Zhongkai Feng & Wenjing Niu & Sen Wang & Chuntian Cheng & Zhenguo Song, 2019. "Mixed Integer Linear Programming Model for Peak Operation of Gas-Fired Generating Units with Disjoint-Prohibited Operating Zones," Energies, MDPI, vol. 12(11), pages 1-17, June.
    3. Seyed Arash Alavi & Valentin Ilea & Alireza Saffarian & Cristian Bovo & Alberto Berizzi & Seyed Ghodratollah Seifossadat, 2019. "Feasible Islanding Operation of Electric Networks with Large Penetration of Renewable Energy Sources considering Security Constraints," Energies, MDPI, vol. 12(3), pages 1-25, February.
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    Cited by:

    1. Mehdi Babaei & Ahmed Abu-Siada, 2023. "Intentional Controlled Islanding Strategy for Wind Power Plant Integrated Systems," Energies, MDPI, vol. 16(12), pages 1-22, June.

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