Transfer function characterization for HFCTs used in partial discharge detection

Hu, Xiao and Siew, W. H. and Judd, Martin D. and Peng, Xiaosheng (2017) Transfer function characterization for HFCTs used in partial discharge detection. IEEE Transactions on Dielectrics and Electrical Insulation, 24 (2). pp. 1088-1096. ISSN 1070-9878 (https://doi.org/10.1109/TDEI.2017.006115)

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Abstract

High frequency current transformers (HFCTs) are widely employed to detect partial discharge (PD) induced currents in high voltage equipment. This paper describes measurements of the wideband transfer functions of HFCTs so that their influence on the detected pulse shape in advanced PD measurement applications can be characterized. The time-domain method based on the pulse response is a useful way to represent HFCT transfer functions as it allows numerical determination of the forward and reverse transfer functions of the sensor. However, while the method is accurate at high frequencies it can have limited resolution at low frequencies. In this paper, a composite time-domain method is presented to allow accurate characterization of the HFCT transfer functions at both low and high frequencies. The composite method was tested on two different HFCTs and the results indicate that the method can characterize their transfer functions ranging from several kHz to tens of MHz. Results are found to be in good agreement with frequency-domain measurements up to 50 MHz. Measurement procedures for using the method are summarized to facilitate further applications.

ORCID iDs

Hu, Xiao, Siew, W. H. ORCID logoORCID: https://orcid.org/0000-0003-4000-6856, Judd, Martin D. and Peng, Xiaosheng;
  • Item type:Article
    ID code:59243
    Dates:
    Date
    Event
    24 April 2017
    Published
    11 December 2016
    Accepted
    Notes:(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:22 Dec 2016 14:13
    Last modified:20 Nov 2024 01:12
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/59243
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