Distribution Transformer Frequency Response Analysis: Behavior of Different Statistical Indices during Inter-disk Fault

Venera Nurmanova, Adilet Sultanbek, Mehdi Bagheri, Roya Ahmadi Ahangar, Oveis Abedinia, Toan Phung, Gevork B. Gharehpetian

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

Abstract

Transformer Frequency Response Analysis (FRA) is one of the most efficient methods to examine the mechanical condition of the transformer without opening the transformer tank and extracting the active part. FRA is a comparative method, where the measured response curve is compared to the reference trace. In this study, various statistical indices for frequency response results interpretation are introduced and the influence of inter-disk fault on each method is evaluated via practical study. Performance of each indicator is discussed and the most reliable index for FRA results interpretation in inter-disk fault suggested. Practical study of inter-disk short-circuit is performed by the rheostat connected in parallel with the winding of distribution transformer. The voltage taps of the transformers are used in order to have the access to different percentage of the transformer winding. Thus by regulating transformer output voltage and emulating short-circuit, there is possibility to distinguish the critical values for "green", "yellow" and "red" zones for transformer FRA and condition evaluation. These critical zone values are advised to be used for assessing the transformer and FRA data via statistical indicators.

Original languageEnglish
Title of host publicationProceedings - 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728106526
DOIs
Publication statusPublished - Jun 2019
Event19th IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019 - Genoa, Italy
Duration: Jun 11 2019Jun 14 2019

Publication series

NameProceedings - 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019

Conference

Conference19th IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019
CountryItaly
CityGenoa
Period6/11/196/14/19

Keywords

  • correlation coefficient
  • frequency response analysis
  • frequency response interpretation
  • statistical indices
  • transformer analysis

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Environmental Engineering
  • Control and Optimization

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  • Cite this

    Nurmanova, V., Sultanbek, A., Bagheri, M., Ahangar, R. A., Abedinia, O., Phung, T., & Gharehpetian, G. B. (2019). Distribution Transformer Frequency Response Analysis: Behavior of Different Statistical Indices during Inter-disk Fault. In Proceedings - 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019 [8783252] (Proceedings - 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EEEIC.2019.8783252