Title :
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
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;
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
DOI :
10.1109/ICPADM.2009.5252501
