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    Impact of high PV penetration on distribution transformer insulation life

    Access Status
    Fulltext not available
    Authors
    Pezeshki, H.
    Wolfs, Peter
    Ledwich, G.
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Pezeshki, H. and Wolfs, P. and Ledwich, G. 2014. Impact of high PV penetration on distribution transformer insulation life. IEEE Transactions on Power Delivery. 29 (3): pp. 1212-1220.
    Source Title
    IEEE Transactions on Power Delivery
    DOI
    10.1109/TPWRD.2013.2287002
    ISSN
    0885-8977
    School
    Department of Electrical and Computer Engineering
    URI
    http://hdl.handle.net/20.500.11937/30357
    Collection
    • Curtin Research Publications
    Abstract

    The reliable operation of distribution systems is critically dependent on detailed understanding of load impacts on distribution transformer insulation systems. This paper estimates the impact of rooftop photovoltaic (PV) generation on a typical 200-kVA, 22/0.415-kV distribution transformer life under different operating conditions. This transformer supplies a suburban area with a high penetration of roof top photovoltaic systems. The transformer loads and the phase distribution of the PV systems are significantly unbalanced. Oil and hot-spot temperature and remnant life of distribution transformer under different PV and balance scenarios are calculated. It is shown that PV can significantly extend the transformer life.

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