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Power Reserve from Photovoltaics for Improving Frequency Response in the Isolated System

Author

Listed:
  • Olga Poliak

    (School of Electrical Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
    Noga ISO, Fliman 8, Haifa 3508418, Israel)

  • Doron Shmilovitz

    (School of Electrical Engineering, Tel Aviv University, Tel Aviv 6997801, Israel)

Abstract

Appropriate frequency response is an issue of great importance in power system management, especially in an islanded one. An energy-based method for assessing a system’s response, which is needed to prevent under frequency load shedding (UFLS), is introduced. Renewable generation, such as wind turbine (WT) and photovoltaic (PV) facilities, reduces the ability of the power system to resist power imbalances and increases the risks of consumer disconnections by UFLS system, and even of total collapse. To estimate the amount of additional fast power reserve, an equation was developed, relating the moment of inertia, the system demand dynamics, and the available response of synchronous generating units. Clustering units based on their ability to respond to frequency changes in low inertia conditions allows the potential synchronous response to be assessed, providing information of its deficiency in a defined system state. The proposed method was applied to the Israeli power system and up to 307 MW response needed from PV facilities was found for the 350 MW contingency, when the percentage of renewable energy reached 30% of the annual energy production. This study focused on proportional frequency response (PFR) and step frequency response (SFR) that PV facilities can provide. Using this method may contribute to the adoption of PV facilities into the power system without a detrimental impact on frequency response and may even improve the reliability of electricity supply.

Suggested Citation

  • Olga Poliak & Doron Shmilovitz, 2023. "Power Reserve from Photovoltaics for Improving Frequency Response in the Isolated System," Energies, MDPI, vol. 16(8), pages 1-20, April.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:8:p:3595-:d:1129452
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    References listed on IDEAS

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    1. SungHoon Lim & Taewan Kim & Kipo Yoon & DongHee Choi & Jung-Wook Park, 2022. "A Study on Frequency Stability and Primary Frequency Response of the Korean Electric Power System Considering the High Penetration of Wind Power," Energies, MDPI, vol. 15(5), pages 1-16, February.
    2. Alexander Abramovitz & Doron Shmilovitz, 2021. "Short Survey of Architectures of Photovoltaic Arrays for Solar Power Generation Systems," Energies, MDPI, vol. 14(16), pages 1-28, August.
    3. Ram Machlev & Zohar Batushansky & Sachin Soni & Vladimir Chadliev & Juri Belikov & Yoash Levron, 2020. "Verification of Utility-Scale Solar Photovoltaic Plant Models for Dynamic Studies of Transmission Networks," Energies, MDPI, vol. 13(12), pages 1-21, June.
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    Cited by:

    1. Loredana Cristaldi & Marco Faifer & Christian Laurano & Emil Petkovski & Ferdinanda Ponci & Igor Sowa & Sergio Toscani, 2024. "Model-Based Algorithm for Flexible Power Point Tracking for Photovoltaic Participation in Primary Frequency Regulation," Energies, MDPI, vol. 17(9), pages 1-14, April.

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