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Influence of copper on the by-products and dielectric properties of different oil paper insulation

Influence of copper on the by-products and dielectric properties of different oil paper insulation
Influence of copper on the by-products and dielectric properties of different oil paper insulation
Transformer failure caused by the corrosion of copper material in transformer attracts great attention of researchers and engineers [1-2]. In this paper, 25# naphthenic transformer oil, 25# paraffinic transformer oil, Kraft paper and copper were used to compose four combinations of oil-paper insulation samples. The by-products resulted from thermal ageing processes at 130°C and changes in dielectric properties of the four combinations of oil-paper insulation samples were compared. The influence of copper on the by-products and dielectric properties of different oil-paper insulations was obtained. The results show that copper can accelerate the ageing rate of insulating oils and reduce their breakdown voltage. Copper has different effect on the furfural concentration in the naphthenic oil and paraffinic oil. The paper aged in the oil-paper insulation system with copper has higher moisture content than that without copper. The SEM results show that there is copper products depositing on the insulating paper surface. The insulation oil and paper aged with copper have higher dielectric loss and conductivity than that without copper.
Hao, Jian
01bbfea6-2a3e-40b3-bb0c-1c16d6dcd66d
Liao, R
23f38936-cf09-4873-8e23-493d61da4e97
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Ma, C
4186d3a5-1e0d-4b24-a116-a783cfe3eef9
Hao, Jian
01bbfea6-2a3e-40b3-bb0c-1c16d6dcd66d
Liao, R
23f38936-cf09-4873-8e23-493d61da4e97
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Ma, C
4186d3a5-1e0d-4b24-a116-a783cfe3eef9

(2011) Influence of copper on the by-products and dielectric properties of different oil paper insulation. Dielectrics 2011, United Kingdom. 13 - 15 Apr 2011.

Record type: Conference or Workshop Item (Poster)

Abstract

Transformer failure caused by the corrosion of copper material in transformer attracts great attention of researchers and engineers [1-2]. In this paper, 25# naphthenic transformer oil, 25# paraffinic transformer oil, Kraft paper and copper were used to compose four combinations of oil-paper insulation samples. The by-products resulted from thermal ageing processes at 130°C and changes in dielectric properties of the four combinations of oil-paper insulation samples were compared. The influence of copper on the by-products and dielectric properties of different oil-paper insulations was obtained. The results show that copper can accelerate the ageing rate of insulating oils and reduce their breakdown voltage. Copper has different effect on the furfural concentration in the naphthenic oil and paraffinic oil. The paper aged in the oil-paper insulation system with copper has higher moisture content than that without copper. The SEM results show that there is copper products depositing on the insulating paper surface. The insulation oil and paper aged with copper have higher dielectric loss and conductivity than that without copper.

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More information

Published date: 13 April 2011
Additional Information: Event Dates: 13 - 15 April 2011
Venue - Dates: Dielectrics 2011, United Kingdom, 2011-04-13 - 2011-04-15
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 272201
URI: http://eprints.soton.ac.uk/id/eprint/272201
PURE UUID: 11c49c99-60fb-4b3e-89f3-d0e74b0f9f14

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Date deposited: 16 Apr 2011 11:10
Last modified: 18 Jul 2017 06:34

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Contributors

Author: Jian Hao
Author: R Liao
Author: George Chen
Author: C Ma

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