Estimation and computation of transfer function parameters from FRA data for analyzing transformer winding deformation and displacements

Author

Prameela, M. ; Yadav, K. Sahitya ; Murthy, G. Radhakrishna ; Nirgude, Pradeep M.

Author_Institution

Vignan Univ., Guntur, India

fYear

2012

fDate

24-28 July 2012

Firstpage

1

Lastpage

4

Abstract

In this paper, experimental investigation carried out on a transformer to obtain frequency response data under various deformation/displacements physically simulated to study and identify the various parameters that influence the frequency responses is presented. Transfer Function using real-rational polynomial function model was computed from the Frequency Response Analysis data. Various transfer function parameters were computed for reference and simulated faulty Frequency Response Analysis data. These parameters are then analyzed to relate changes to characterize the defects by correlating with type and position of the deformation/displacement. The analysis presented based on the transfer function characteristic parameter changes will help in diagnosing transformer winding deformations/displacements.

Keywords

deformation; fault diagnosis; frequency response; parameter estimation; polynomials; power transformers; transfer functions; transformer windings; FRA data; fault diagnosis; real-rational polynomial function model; simulated faulty frequency response analysis data; transfer function parameter estimation; transformer winding deformation analysis; transformer winding displacement analysis; Capacitance; MATLAB; Monitoring; Transfer functions; Frequency Response Analysis; Real-rational polynomial; Transfer Function; Winding deformation and displacements;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials (ICPADM), 2012 IEEE 10th International Conference on the

Conference_Location

Bangalore

ISSN

2160-9225

Print_ISBN

978-1-4673-2852-4

Type

conf

DOI

10.1109/ICPADM.2012.6318961

Filename

6318961