Bushing characteristic impacts on on-line Frequency Response Analysis of transformer winding

Mehdi Bagheri, Mohammad Salay Naderi, Trevor Blackburn, B. T. Phung

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

19 Citations (Scopus)

Abstract

Diagnosis of electrical equipment, particularly n and power transformers has been quite important for quite a long time. Frequency Response Analysis (FRA) has been introduced years ago and has been employed as an off-line diagnosis test since last decade to investigate transformer mechanical integrity. As smart high voltage monitoring concept is under developing, on-line transformer winding deformation diagnosis has been investigated and discussed significantly over the last years. Hence, on-line diagnosis method implementations have become important accordingly. This study has concentrated on issues arising while on-line FRA is going to be employed on transformers. Existing off-line and on-line transformer winding deformation diagnosis methods are discussed and an on-line frequency response analysis measurement setup is proposed. A profound insight to the challenges associated with on-line FRA measurement has been provided. Influence of on-line setup on frequency response trace sensitivity, accuracy and interpretation has been highlighted. In the end, practical study has been performed on a 66 kV interleaved winding connected various types of capacitive bushings to explore the boundary condition for on-line FRA setup design and to address fundamental challenges.

Original languageEnglish
Title of host publicationPECon 2012 - 2012 IEEE International Conference on Power and Energy
Pages956-961
Number of pages6
DOIs
Publication statusPublished - Dec 1 2012
Externally publishedYes
Event2012 IEEE International Conference on Power and Energy, PECon 2012 - Kota Kinabalu, Malaysia
Duration: Dec 2 2012Dec 5 2012

Publication series

NamePECon 2012 - 2012 IEEE International Conference on Power and Energy

Other

Other2012 IEEE International Conference on Power and Energy, PECon 2012
CountryMalaysia
CityKota Kinabalu
Period12/2/1212/5/12

Keywords

  • Frequency response analysis
  • On-line diagnosis
  • Transformer
  • Winding deformation

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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