Impact of low inertia and high distributed generation on the effectiveness of under frequency load shedding schemes

Gordon, Samuel and McGarry, Connor and Tait, James Gordon and Bell, Keith (2022) Impact of low inertia and high distributed generation on the effectiveness of under frequency load shedding schemes. IEEE Transactions on Power Delivery, 37 (5). pp. 3752-3761. ISSN 0885-8977 (https://doi.org/10.1109/TPWRD.2021.3137079)

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Abstract

The Under-Frequency Load Shedding (UFLS) scheme is an emergency measure in place to prevent system collapse in the event of a large generation deficit relative to demand at any moment in time. However, the effectiveness of traditional UFLS schemes may be compromised as network power flows change due to the growth of distributed generation (DG) and a reduction in system inertia. This study has shown some of the issues affecting the UFLS protection system with rising installed capacities of DG in the Great Britain power system. Simulation results show how the effectiveness of the scheme is challenged with current and future expected DG installed capacities and the risk of over shedding demand due to the scheme's current settings is evaluated. Many proposed improvements to traditional load shedding schemes are based on upgrades to network monitoring and communication systems, which are not yet fully available. This study evaluates more readily available solutions, including relocation of under-frequency relays and reducing the time delay of the scheme, which may provide interim improvements to the UFLS scheme, based on a case study in GB.

  • Item type:Article
    ID code:79148
    Dates:
    Date
    Event
    1 October 2022
    Published
    21 December 2021
    Published Online
    1 December 2021
    Accepted
    Notes:© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:14 Jan 2022 14:52
    Last modified:23 Apr 2024 00:20
    URI:https://strathprints.strath.ac.uk/id/eprint/79148
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