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    Coordinated operation of a grid scale energy storage system with tap changer for voltage control on primary substations

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    CIRED 2019 - 1994.pdf (458.4Kb)
    Paper number
    1994
    Conference name
    CIRED 2019
    Conference date
    3-6 June 2019
    Conference location
    Madrid, Spain
    Peer-reviewed
    Yes
    Metadata
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    Authors
    Nieto, Alejandro, UK Power Networks Services, United Kingdom
    Efstratiadi, Maria-Aliki, UK Power Networks Services, United Kingdom
    Coughlan, Kieran, UK Power Networks Services, United Kingdom
    Currie, Alastair, UK Power Networks Services, United Kingdom
    Do, Sam, UK Power Networks, United Kingdom
    Abstract
    On-Load Tap Changers (OLTC) are used by Distribution Network Operators (DNOs) to regulate the output voltage of transformers and thus manage the voltage at grid and primary substations. An Energy Storage System (ESS) is equipped with power electronics interfaces which are capable of supporting the voltage control in different network points while delivering ancillary services in parallel to the electricity grid.The aim of this paper is to propose an alternative scheme of voltage control which uses reactive power from an ESS, optimising the utilisation and thus extending the life of OLTCs used on distribution networks. The proposed ESS Co-ordinated Voltage Control Service (CVCS) has been developed and assessed in a real 6MW/10MWh ESS connected on the secondary (11kV) side of an HV/MV substation in the UK.The trial results showed that a grid scale ESS is suitable and effective in providing voltage support across a full load cycle (24 hours), while allowing a lifetime extension and maintenance deferral of OLTC’s in primary substations.
    Publisher
    AIM
    Date
    2019-06-03
    Published in
    • CIRED 2019 Conference
    Permanent link to this record
    https://cired-repository.org/handle/20.500.12455/680
    http://dx.doi.org/10.34890/902
    ISSN
    2032-9644
    ISBN
    978-2-9602415-0-1

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