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Experimental studies of influence of different electrodes on bridging in contaminated transformer oil

Experimental studies of influence of different electrodes on bridging in contaminated transformer oil
Experimental studies of influence of different electrodes on bridging in contaminated transformer oil
Contaminated transformer oil has been tested under non uniform electric fields and the effect of different electrode systems presented in this paper. Three different electric fields were examined i.e. DC, AC and DC biased AC. These experiments revealed that with all the different electrodes arrangements, contaminated particles always formed bridges between electrodes under DC electric field. The bridges were thicker and more particles were attracted with more uniform electric field (spherical electrode) than with a divergent electric field (needle-plane).
HVDC transformer, failure, contamination, dielectrophoresis, drag force, bridging
2433-2441
Mahmud, S.
158ca15c-3bae-472c-8822-6cdf0ea3b616
Chen, G.
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Golosnoy, I.O.
40603f91-7488-49ea-830f-24dd930573d1
Wilson, G.
8fd34f42-b70e-48a6-b256-cd6f938aa8c1
Jarman, P.
a9793465-653f-4d51-ad8c-3fb313393aaa
Mahmud, S.
158ca15c-3bae-472c-8822-6cdf0ea3b616
Chen, G.
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Golosnoy, I.O.
40603f91-7488-49ea-830f-24dd930573d1
Wilson, G.
8fd34f42-b70e-48a6-b256-cd6f938aa8c1
Jarman, P.
a9793465-653f-4d51-ad8c-3fb313393aaa

Mahmud, S., Chen, G., Golosnoy, I.O., Wilson, G. and Jarman, P. (2015) Experimental studies of influence of different electrodes on bridging in contaminated transformer oil. IEEE Transactions on Dielectrics & Electrical Insulation, 22 (5), 2433-2441. (doi:10.1109/TDEI.2015.004846).

Record type: Article

Abstract

Contaminated transformer oil has been tested under non uniform electric fields and the effect of different electrode systems presented in this paper. Three different electric fields were examined i.e. DC, AC and DC biased AC. These experiments revealed that with all the different electrodes arrangements, contaminated particles always formed bridges between electrodes under DC electric field. The bridges were thicker and more particles were attracted with more uniform electric field (spherical electrode) than with a divergent electric field (needle-plane).

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sm_ieee_diel_22_2015_p2433.pdf - Accepted Manuscript
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More information

Accepted/In Press date: 21 February 2015
Published date: October 2015
Keywords: HVDC transformer, failure, contamination, dielectrophoresis, drag force, bridging
Organisations: EEE

Identifiers

Local EPrints ID: 383953
URI: http://eprints.soton.ac.uk/id/eprint/383953
PURE UUID: 41677292-01e4-45b5-8918-059e121567e3

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Date deposited: 12 Nov 2015 14:47
Last modified: 28 Oct 2019 20:37

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Contributors

Author: S. Mahmud
Author: G. Chen
Author: I.O. Golosnoy
Author: G. Wilson
Author: P. Jarman

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