Application of the Impulse Response of Transformer Winding for Detection of Internal Turn-to-Turn Short Circuits

Mozon Shadid, Noureddine Harid, Braham Barkat, Ashwin Manjunath

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Several techniques are currently used to monitor internal defects in power transformers. These are very useful for reducing failure rates and extending the service life of transformers. One of the most sensitive techniques is the frequency response analysis method that injects a swept frequency ac signal into the transformer winding and analyses differences between the measured output signal and a benchmark reference signal. This paper applies the impulse voltage method for the diagnosis of turn-to-turn short circuit faults inside a transformer winding. The input signals are a set of impulse voltages of different shapes instead of the standard ac signals of variable frequency. The merits of this method compared with the standard swept frequency method are a shorter time for testing and for signal analysis. The output results are processed to produce a frequency response plot of the winding. Measurement results on a small test transformer show that the plots are closely similar to those obtained using the swept frequency method. In this initial study, impulse voltages are used to emulate the naturally occurring transients in power systems such as switching events and tap changer operations. The sensitivity of the method is verified by applying statistical techniques to interpret the measured frequency response in different frequency bands.

Original languageBritish English
Title of host publication2022 57th International Universities Power Engineering Conference
Subtitle of host publicationBig Data and Smart Grids, UPEC 2022 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665455053
DOIs
StatePublished - 2022
Event57th International Universities Power Engineering Conference: Big Data and Smart Grids, UPEC 2022 - Istanbul, Turkey
Duration: 30 Aug 20222 Sep 2022

Publication series

Name2022 57th International Universities Power Engineering Conference: Big Data and Smart Grids, UPEC 2022 - Proceedings

Conference

Conference57th International Universities Power Engineering Conference: Big Data and Smart Grids, UPEC 2022
Country/TerritoryTurkey
CityIstanbul
Period30/08/222/09/22

Keywords

  • fault diagnosis
  • Frequency response analysis
  • impulse method
  • statistical parameter
  • Transformer

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