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Influence of copper on the by-products of different oil-paper insulations

Influence of copper on the by-products of different oil-paper insulations
Influence of copper on the by-products of different oil-paper insulations
Transformer failure caused by the corrosion of copper material in transformer attracts great attention of researchers and engineers. In this paper, Karamay No. 25 naphthenic mineral oil, Karamay No. 25 paraffinic mineral oil, Kraft paper and copper were used to compose four combinations of oil-paper insulation samples. The ageing by-products and dielectric properties of the four combinations of oil-paper insulation samples were compared after they were thermally aged at 130°C. 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 insulation oils and reduce their AC breakdown voltage. The content of copper substance dissolved in insulating oil increases with ageing time at firstand then decreases. The paper aged in the oil-paper insulation sample with copper has higher moisture content than the one without copper. Results of energy dispersive spectroscopy (EDS) in the scanning electron microscope (SEM) show that there is copper product deposited on the surface of insulation paper. The insulation oil and paper aged in the oil-paper insulation sample with copper have higher dielectric loss and conductivity than that without copper.
1742-6588
12007
Hao, Jian
01bbfea6-2a3e-40b3-bb0c-1c16d6dcd66d
Liao, Ruijin
e10ba49b-110d-4e1d-a102-b1a4e4a0b7e2
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Ma, Chao
98b1a76f-532e-4c2a-b7ad-eda30409dd6b
Hao, Jian
01bbfea6-2a3e-40b3-bb0c-1c16d6dcd66d
Liao, Ruijin
e10ba49b-110d-4e1d-a102-b1a4e4a0b7e2
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Ma, Chao
98b1a76f-532e-4c2a-b7ad-eda30409dd6b

Hao, Jian, Liao, Ruijin, Chen, George and Ma, Chao (2011) Influence of copper on the by-products of different oil-paper insulations. Journal of Physics: Conference Series, 310, 12007.

Record type: Article

Abstract

Transformer failure caused by the corrosion of copper material in transformer attracts great attention of researchers and engineers. In this paper, Karamay No. 25 naphthenic mineral oil, Karamay No. 25 paraffinic mineral oil, Kraft paper and copper were used to compose four combinations of oil-paper insulation samples. The ageing by-products and dielectric properties of the four combinations of oil-paper insulation samples were compared after they were thermally aged at 130°C. 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 insulation oils and reduce their AC breakdown voltage. The content of copper substance dissolved in insulating oil increases with ageing time at firstand then decreases. The paper aged in the oil-paper insulation sample with copper has higher moisture content than the one without copper. Results of energy dispersive spectroscopy (EDS) in the scanning electron microscope (SEM) show that there is copper product deposited on the surface of insulation paper. The insulation oil and paper aged in the oil-paper insulation sample with copper have higher dielectric loss and conductivity than that without copper.

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Published date: 12 August 2011
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 272668
URI: http://eprints.soton.ac.uk/id/eprint/272668
ISSN: 1742-6588
PURE UUID: 79c97cf6-27b3-49c3-9512-b6ea4d0792d1

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Date deposited: 16 Aug 2011 08:31
Last modified: 25 Nov 2019 20:58

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