On-load tap-changer influence on frequency response analysis of transformer: A case study

Mehdi Bagheri; Svyatoslav Nezhivenko; B. T. Phung; Vahid Behjat

doi:10.1109/DEMPED.2017.8062394

On-load tap-changer influence on frequency response analysis of transformer: A case study

Mehdi Bagheri, Svyatoslav Nezhivenko, B. T. Phung, Vahid Behjat

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

Frequency Response Analysis (FRA) has been used as a comparative diagnosis method to explore mechanical defects in transformer. FRA is quite sensitive method and it can be influenced by different factors in transformer simply; however, this sensitivity will make it superior rather than other transformer winding deformation diagnosis techniques. This study has concentrated on tap-changer position influence on FRA signature. Practical study is performed on a 33 kV, 40 MVA three-phase core type transformer to examine on-load tap-changer (OLTC) position on frequency response spectrum in different frequency bands in Bode diagram. Oscillations in different frequency bands are discussed and their fluctuations are interpreted. Low-frequency band oscillations of FRA spectrum due to tap position changes are analyzed and discussed in detail. Distinguishing the tap-changer influence on FRA spectrum from winding deformation is quite crucial for FRA data interpretation.

Original language	English
Title of host publication	Proceedings of the 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	455-460
Number of pages	6
Volume	2017-January
ISBN (Electronic)	9781509004096
DOIs	https://doi.org/10.1109/DEMPED.2017.8062394
Publication status	Published - Oct 6 2017
Event	11th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017 - Tinos, Greece Duration: Aug 29 2017 → Sept 1 2017

Conference

Conference	11th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017
Country/Territory	Greece
City	Tinos
Period	8/29/17 → 9/1/17

Keywords

Frequency Response Analysis (FRA)
OLTC
Transformer tap-changer
Transformer winding deformation

ASJC Scopus subject areas

Electrical and Electronic Engineering
Energy Engineering and Power Technology

Access to Document

10.1109/DEMPED.2017.8062394

Cite this

Bagheri, M., Nezhivenko, S., Phung, B. T., & Behjat, V. (2017). On-load tap-changer influence on frequency response analysis of transformer: A case study. In Proceedings of the 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017 (Vol. 2017-January, pp. 455-460). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/DEMPED.2017.8062394

On-load tap-changer influence on frequency response analysis of transformer: A case study. / Bagheri, Mehdi; Nezhivenko, Svyatoslav; Phung, B. T. et al.
Proceedings of the 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017. Vol. 2017-January Institute of Electrical and Electronics Engineers Inc., 2017. p. 455-460.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Bagheri, M, Nezhivenko, S, Phung, BT & Behjat, V 2017, On-load tap-changer influence on frequency response analysis of transformer: A case study. in Proceedings of the 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017. vol. 2017-January, Institute of Electrical and Electronics Engineers Inc., pp. 455-460, 11th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017, Tinos, Greece, 8/29/17. https://doi.org/10.1109/DEMPED.2017.8062394

Bagheri M, Nezhivenko S, Phung BT, Behjat V. On-load tap-changer influence on frequency response analysis of transformer: A case study. In Proceedings of the 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017. Vol. 2017-January. Institute of Electrical and Electronics Engineers Inc. 2017. p. 455-460 doi: 10.1109/DEMPED.2017.8062394

Bagheri, Mehdi ; Nezhivenko, Svyatoslav ; Phung, B. T. et al. / On-load tap-changer influence on frequency response analysis of transformer : A case study. Proceedings of the 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017. Vol. 2017-January Institute of Electrical and Electronics Engineers Inc., 2017. pp. 455-460

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abstract = "Frequency Response Analysis (FRA) has been used as a comparative diagnosis method to explore mechanical defects in transformer. FRA is quite sensitive method and it can be influenced by different factors in transformer simply; however, this sensitivity will make it superior rather than other transformer winding deformation diagnosis techniques. This study has concentrated on tap-changer position influence on FRA signature. Practical study is performed on a 33 kV, 40 MVA three-phase core type transformer to examine on-load tap-changer (OLTC) position on frequency response spectrum in different frequency bands in Bode diagram. Oscillations in different frequency bands are discussed and their fluctuations are interpreted. Low-frequency band oscillations of FRA spectrum due to tap position changes are analyzed and discussed in detail. Distinguishing the tap-changer influence on FRA spectrum from winding deformation is quite crucial for FRA data interpretation.",

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AB - Frequency Response Analysis (FRA) has been used as a comparative diagnosis method to explore mechanical defects in transformer. FRA is quite sensitive method and it can be influenced by different factors in transformer simply; however, this sensitivity will make it superior rather than other transformer winding deformation diagnosis techniques. This study has concentrated on tap-changer position influence on FRA signature. Practical study is performed on a 33 kV, 40 MVA three-phase core type transformer to examine on-load tap-changer (OLTC) position on frequency response spectrum in different frequency bands in Bode diagram. Oscillations in different frequency bands are discussed and their fluctuations are interpreted. Low-frequency band oscillations of FRA spectrum due to tap position changes are analyzed and discussed in detail. Distinguishing the tap-changer influence on FRA spectrum from winding deformation is quite crucial for FRA data interpretation.

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On-load tap-changer influence on frequency response analysis of transformer: A case study

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