Comparison of non-communication based DC load shedding schemes

Babagana, Abdulrahman and Zaman, Taimur and Seferi, Yljon and Syed, Mazheruddin and Burt, Graeme; (2022) Comparison of non-communication based DC load shedding schemes. In: 2022 57th International Universities Power Engineering Conference (UPEC). 2022 57th International Universities Power Engineering Conference: Big Data and Smart Grids, UPEC 2022 - Proceedings . IEEE, TUR. ISBN 9781665455053 (https://doi.org/10.1109/UPEC55022.2022.9917898)

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Abstract

Whenever the total power that can be provided by the distributed energy resources (DERs) is less than the total power demand of the loads, the DC bus voltages start to fall which could lead to power collapse. This paper investigates and compares the performances of the existing non-communication based (decentralized) load shedding schemes in a direct current (DC) microgrid to protect the integrity of the microgrid under a large disturbance. The simulation is carried out in a Matlab environment with various forms of load and distributed energy resources on an IEEE 37 AC Node converted to DC. The findings show that the conventional load shedding scheme could expose critical loads to substantial and lengthy voltage sags. Voltage sags and over-shedding of load could be resolved using combined load shedding scheme. The adaptive schemes minimise the duration and magnitude of voltage drop by utilizing the rate of change of voltage (ROCOV) to achieve a more reliable assessment of the microgrid operating conditions and determine the appropriate load shedding voltage thresholds and time delays. All the schemes could not achieve an optimal load shedding, this work therefore leads to the need for more advanced load shedding schemes that can shed load optimally for future DC microgrids.

ORCID iDs

Babagana, Abdulrahman, Zaman, Taimur ORCID logoORCID: https://orcid.org/0000-0002-4319-7072, Seferi, Yljon ORCID logoORCID: https://orcid.org/0000-0003-4082-1949, Syed, Mazheruddin ORCID logoORCID: https://orcid.org/0000-0003-3147-0817 and Burt, Graeme ORCID logoORCID: https://orcid.org/0000-0002-0315-5919;
  • Item type:Book Section
    ID code:81717
    Dates:
    Date
    Event
    18 October 2022
    Published
    15 July 2022
    Accepted
    Notes:© 2022 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:04 Aug 2022 11:05
    Last modified:11 Nov 2024 15:31
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/81717
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