Protection of microgrid with high amounts of renewables : challenges and solutions

Liu, Di and Tzelepis, Dimitrios and Dysko, Adam; (2019) Protection of microgrid with high amounts of renewables : challenges and solutions. In: 2019 54th International Universities Power Engineering Conference (UPEC). IEEE, ROM. ISBN 978-1-7281-3349-2 (https://doi.org/10.1109/UPEC.2019.8893485)

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Abstract

Microgrid is a small-scale network including generators, loads and storage system, which provides a friendly way for the penetration of renewables and releases the burden of transmission system arising from the increased energy demand. Moreover, since microgrid can operate in islanded mode, it can provide backup power to local consumers when the main grid is disconnected. However, the utilization of microgrid causes serious problems in the area of power system protection. The main issues comprise varied fault levels in different operating modes and fault detection in islanded microgrid particularly when the microgrid is dominated by inverter based DGs (IIDGs). In addition, to avoid non-necessary power losses raised from multi-stage power conversion of DC loads and generators, DC microgrid becomes another attractive choice, which further increases the difficult on designing protection system for the futuristic microgrid. In this paper, a comprehensive review of the existing issues and protection methods for AC and DC microgrids is presented. Furthermore, to facilitate better understanding to readers, the benefits and limitations of each method are discussed in depth. Potential protection tools for future microgrid are suggested at the end of this paper.

ORCID iDs

Liu, Di ORCID logoORCID: https://orcid.org/0000-0002-1180-5248, Tzelepis, Dimitrios ORCID logoORCID: https://orcid.org/0000-0003-4263-7299 and Dysko, Adam ORCID logoORCID: https://orcid.org/0000-0002-3658-7566;
  • Item type:Book Section
    ID code:74645
    Dates:
    Date
    Event
    3 September 2019
    Published
    21 June 2019
    Accepted
    Notes:© 2019 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:18 Nov 2020 15:40
    Last modified:14 Nov 2024 01:22
    URI:https://strathprints.strath.ac.uk/id/eprint/74645
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