Application of FEM for understanding the electric field distribution in copper sulphide contaminated paper-oil insulation of power transformer

Author

Rudranna, N. ; Krishnan, V. ; Rajan, J. Sundara

Author_Institution

Dept. of Electr. & Electron. Eng., R.V. Coll. of Eng., Bangalore, India

fYear

2009

fDate

19-23 July 2009

Firstpage

73

Lastpage

76

Abstract

Power transformers are failing due to the formation and migration of copper sulphide in to paper insulation. The copper sulphide is formed due to the interaction of sulphur present in the oil with copper conductor. This paper presents FEM simulation of the copper sulphide contaminated model of paper oil insulation and analysis of the consequent field distortions. The results indicate increase in electric stress across paper insulation due to field distortion. An effort is made to validate the experimentally obtained partial discharge inception voltages.

Keywords

copper compounds; electric fields; finite element analysis; partial discharges; power transformers; transformer insulation; FEM simulation; copper sulphide contaminated paper-oil insulation; electric field distribution; field distortions; finite element method; paper insulation; partial discharge inception voltages; power transformer; Analytical models; Conductors; Copper; Dielectrics and electrical insulation; Oil insulation; Partial discharges; Petroleum; Power transformer insulation; Power transformers; Stress; Finite Element method (FEM); Partial discharge (PD); Power and converter transformer; corrosive sulphur;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the

Conference_Location

Harbin

Print_ISBN

978-1-4244-4367-3

Electronic_ISBN

978-1-4244-4368-0

Type

conf

DOI

10.1109/ICPADM.2009.5252501

Filename

5252501