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  • An Investigation on the Influence of Tap Changer on Frequency Response Analysis

    Author(s)
    Yousof, M. F. M.
    Ekanayake, Chandima
    Saha, Tapan
    Griffith University Author(s)
    Ekanayake, Chandima MB.
    Year published
    2015
    Metadata
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    Abstract
    Tap changer in power transformer has a high failure rate thus its condition requires extra attention. In this paper, the possibility of using Frequency Response Analysis to monitor tap changer status was explored. Initial study showed that the settings in tap changer can influence the frequency response of HV and LV windings. In addition, the low frequency region of the inductive inter-winding response was used to calculate the winding turns ratio. By simulating a faulty tap changer, the frequency response was able to show clear variations especially on the short circuit test. With the findings, a flow chart was proposed, ...
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    Tap changer in power transformer has a high failure rate thus its condition requires extra attention. In this paper, the possibility of using Frequency Response Analysis to monitor tap changer status was explored. Initial study showed that the settings in tap changer can influence the frequency response of HV and LV windings. In addition, the low frequency region of the inductive inter-winding response was used to calculate the winding turns ratio. By simulating a faulty tap changer, the frequency response was able to show clear variations especially on the short circuit test. With the findings, a flow chart was proposed, which can be served as a guideline to determine the condition of tap changer based on the changes in the response. The chart also considered other types of fault.
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    Conference Title
    Proceedings of the 2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM)
    DOI
    https://doi.org/10.1109/ICPADM.2015.7295434
    Subject
    Electrical and Electronic Engineering not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/123484
    Collection
    • Conference outputs

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