Life prediction for transformer winding insulated with epoxy resin and thickness-reduced paper through voltage endurance tests

Author

Zhuang, Qikai ; Morshuis, Peter H F ; Djairam, Dhiradj ; Smit, Johan J. ; Xu, Zhongrong

Author_Institution

High voltage Technol. & Manage., Delft Univ. of Technol., Delft, Netherlands

fYear

2012

fDate

17-20 Sept. 2012

Firstpage

115

Lastpage

118

Abstract

This paper investigates the epoxy resin coated paper-oil insulation between windings wires of a transmission power transformer. Voltage endurance test has been performed separately on the epoxy-resin layer and on the complete insulation. The test result reveals the voltage vs. lifetime characteristics of the epoxy resin layer, which further supports the life prediction on the complete insulation. The predicted lifetime ensures the reliability of the investigated insulation design and further suggests the possibility to reduce the thickness of the paper insulation layer.

Keywords

epoxy insulation; power transformer insulation; transformer oil; transformer windings; epoxy resin coated paper-oil insulation; paper insulation layer; thickness-reduced paper; transformer winding; transmission power transformer; voltage endurance tests; winding wires; Cavity resonators; Epoxy resins; Estimation; Insulation; Reliability; Windings; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

High Voltage Engineering and Application (ICHVE), 2012 International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4673-4747-1

Type

conf

DOI

10.1109/ICHVE.2012.6357066

Filename

6357066