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    Variations of supraharmonic emissions in low voltage networks

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    CIRED 2019 - 55.pdf (1.079Mb)
    Paper number
    55
    Conference name
    CIRED 2019
    Conference date
    3-6 June 2019
    Conference location
    Madrid, Spain
    Peer-reviewed
    Yes
    Metadata
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    Authors
    Rönnberg, Sarah , Luleå University of Technology, Sweden
    Gil de Castro, Aurora, University of Cordoba, Spain
    Espin Delgado, Angela, Luleå University of Technology, Sweden
    Abstract
    This paper describes and presents measurements of supraharmonic emission in low voltage grids in Europe, North America and Asia. One-minute average values for 2 kHz grouped components are given and a total supraharmonic distortion (TSHD) value is calculated for the frequency band 2 to 150 kHz. Statistical analyses are performed, investigating the site and time dependency of supraharmonic voltages. Results show that the average values are, with a 90% confidence within an interval of 0.09-0.56% of fundamental (FND) but higher values can occur. Based on analyses of these measurements some early conclusions can be drawn:Supraharmonic emission are present in low voltage gridsThe magnitudes and frequencies vary between sites and over timeThere is a daily pattern but also some randomness when supraharmonics appear
    Publisher
    AIM
    Date
    2019-06-03
    Published in
    • CIRED 2019 Conference
    Permanent link to this record
    https://cired-repository.org/handle/20.500.12455/116
    http://dx.doi.org/10.34890/234
    ISSN
    2032-9644
    ISBN
    978-2-9602415-0-1

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