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    Residual Magnetic Flux of Transformer at Power System Accident

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    CIRED 2019 - 110.pdf (828.4Kb)
    Paper number
    110
    Conference name
    CIRED 2019
    Conference date
    3-6 June 2019
    Conference location
    Madrid, Spain
    Peer-reviewed
    Yes
    Metadata
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    Authors
    Himata, Yukihiko, Tokyo Denki University, Japan
    Nakajima, Takashi, Tokyo Denki University, Japan
    Koshizuka, Tadashi, Tokyo Denki University, Japan
    Maruyama, Shiro, Toshiba Energy Systems & Solution Corporation, Japan
    Saito, Minoru, Toshiba Energy Systems & Solution Corporation, Japan
    Maejima, Hiroyuki, Toshiba Energy Systems & Solution Corporation, Japan
    Abstract
    When a transformer is being energized, a large magnetizing inrush current flows depending upon the closing phase of circuit breakers and the residual magnetic flux in the iron core. One of the suppressing the magnetizing inrush current method is controlling closing phase of the circuit breaker. For the controlled switching, to grasp condition of residual magnetic flux in the iron core is essential. Ample studies demonstrate that residual magnetic flux for no-load transformers. The residual magnetic flux for three-phase three-leg transformer had been investigated. However, little is known about residual magnetic flux after fault current interruption.In this paper, the residual magnetic fluxes after interruption at one line ground (1LG) and two lines short-circuited (2LS) faults in isolated neutral system were investigated with experiments and calculations.
    Publisher
    AIM
    Date
    2019-06-03
    Published in
    • CIRED 2019 Conference
    Permanent link to this record
    https://cired-repository.org/handle/20.500.12455/382
    http://dx.doi.org/10.34890/606
    ISSN
    2032-9644
    ISBN
    978-2-9602415-0-1

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