High frequency modeling of protection/measurement current transformers for partial discharge detection

Faisal Peer Mohamed, Wah Hoon Siew, John Soraghan

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

3 Citations (Scopus)


This paper investigates the choice of using preinstalled protection and measurement current transformers (CTs) for the detection of high frequency partial discharge (PD) signals in medium voltage cables by conducting frequency response analysis (FRA) of these CTs and by frequency response modeling. Researchers have developed many high frequency models, mainly for the transient behavior of CTs. While the energy of the high frequency signals in these models is very high, the energy content associated with PDs is very low. The transformer core behavior will be different in both cases and, as far as the authors could ascertain, there is little information on the FRA of such CTs for low energy high frequency input. A high frequency model of the current transformer is presented. The Jiles-Atherton model is used to analyse the behavior of the CT core in a high frequency partial discharge environment. A method for obtaining model parameters such as parasitic capacitances, leakage inductance, winding resistance, and iron loss component is proposed.
Original languageEnglish
Title of host publication2009 Proceedings of the 44th International Universities Power Engineering Conference (UPEC)
Place of PublicationNew York
Number of pages5
ISBN (Print)9781424468232
Publication statusPublished - 2009
Event44th International Universities Power Engineerting Conference - Glasgow, United Kingdom
Duration: 1 Sep 20094 Sep 2009


Conference44th International Universities Power Engineerting Conference
Country/TerritoryUnited Kingdom


  • frequency response
  • partial discharges
  • current transformers
  • high frequency modeling
  • protection
  • measurement


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