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    Protection coordination of an inverter generation based microgrid for an unbalanced distribution system

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    CIRED 2018 Ljubljana WS - 0200 - 20869.pdf (517.9Kb)
    Paper number
    0200
    Conference name
    CIRED 2018 Ljubljana Workshop
    Conference date
    7 - 8 June 2018
    Conference location
    Ljubljana, Slovenia
    Peer-reviewed
    Yes
    Metadata
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    Authors
    Bello, Mobolaji, Electric Power Research Institute (EPRI), The United States of America
    Maitra, Arindam, Electric Power Research Institute (EPRI), The United States of America
    Dugan, Roger, Electric Power Research Institute (EPRI), The United States of America
    Gebeyehu, Araya, Southern California Edison (SCE), The United States of America
    Araiza, Jorge, Southern California Edison (SCE), The United States of America
    Weng, Dean, Electric Power Research Institute (EPRI), The United States of America
    McGuinness, Sean, Electric Power Research Institute (EPRI), The United States of America
    Abstract
    In this paper we examine the protection issues that must be dealt with, to successfully operate a microgrid when the utility experiences a grid outage. Changes in fault current levels within microgrids under grid-tied and islanded conditions present challenges to developing robust and reliable protection schemes. These schemes must provide an effective response in both gridconnected and islanded mode and the transition between these modes. In this study, a section of an actual residential community located in the western part of the United States (U.S.) was considered as part of the microgrid evaluation. A sizing analysis was conducted to select the appropriate sizes of DER; simulated using DER-CAM analysis. The two DERs considered for the study included solar PV and Battery Energy Storage System (BESS). This paper highlights the protection coordination issues when an existing unbalanced distribution system encompassing a residential subdivision is converted into a microgrid with generation sources with low fault contribution. It further explains the strategy to coordinate protection devices during grid connected and islanded microgrid operating regimes.
    Publisher
    AIM
    Date
    2018-06-07
    Published in
    • CIRED 2018 Ljubljana Workshop on Microgrids and Local Energy Communities
    Permanent link to this record
    https://www.cired-repository.org/handle/20.500.12455/1234
    http://dx.doi.org/10.34890/382
    ISSN
    2032-9628
    ISBN
    978-2-9602415-1-8

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