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Influence of oil aging on the space charge dynamics of oil-immersed paper insulation under a DC electric field

Influence of oil aging on the space charge dynamics of oil-immersed paper insulation under a DC electric field
Influence of oil aging on the space charge dynamics of oil-immersed paper insulation under a DC electric field
The formation of space charge in oil/paper insulation system can lead to material degradation in the region of high electric field. Therefore, it is important to understand the factors that affect space charge formation in oil/paper insulation system. In this paper, the effect of oil aging on space charge dynamics in oil/paper insulation system is investigated using the pulsed electroacoustic (PEA) technique under a DC electric field at room temperature. The ultraviolet/visible (UV/vis) spectrum of the oil shifts to longer wavelengths, and the oil acidity increases as the aging time increases. It has been found that the oil property has a significant effect on the space charge distribution in the oil/paper insulation sample. The more the deterioration of the oil, the larger amount of negative and positive charges accumulated in the bulk of the oil/paper insulation sample. The total amount of slow moving charges, the surface trap energy density, and the electric field distortion of the oil/paper insulation sample increased with the degree of deterioration due to oil aging
oil aging, oil/paper insulation, space charge, pulsed electroacoustic, dc voltage, charge injection
1931-4973
1-11
Hao, Jian
01bbfea6-2a3e-40b3-bb0c-1c16d6dcd66d
Tang, Chao
dcd2c9bd-9fa4-4b23-bb5b-b0295aaba4cf
Fu, Jin
ffe9caa5-b98c-41af-aac2-948ad3de0287
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Wu, Gaolin
f3c6c771-b591-41df-a1b5-4cab09f41719
Wang, Qian
a9a64412-49cc-4ab7-9bb6-646551219d66
Hao, Jian
01bbfea6-2a3e-40b3-bb0c-1c16d6dcd66d
Tang, Chao
dcd2c9bd-9fa4-4b23-bb5b-b0295aaba4cf
Fu, Jin
ffe9caa5-b98c-41af-aac2-948ad3de0287
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Wu, Gaolin
f3c6c771-b591-41df-a1b5-4cab09f41719
Wang, Qian
a9a64412-49cc-4ab7-9bb6-646551219d66

Hao, Jian, Tang, Chao, Fu, Jin, Chen, George, Wu, Gaolin and Wang, Qian (2015) Influence of oil aging on the space charge dynamics of oil-immersed paper insulation under a DC electric field. IEEJ Transactions on Electrical and Electronic Engineering, 10, 1-11. (doi:10.1002/tee.22064).

Record type: Article

Abstract

The formation of space charge in oil/paper insulation system can lead to material degradation in the region of high electric field. Therefore, it is important to understand the factors that affect space charge formation in oil/paper insulation system. In this paper, the effect of oil aging on space charge dynamics in oil/paper insulation system is investigated using the pulsed electroacoustic (PEA) technique under a DC electric field at room temperature. The ultraviolet/visible (UV/vis) spectrum of the oil shifts to longer wavelengths, and the oil acidity increases as the aging time increases. It has been found that the oil property has a significant effect on the space charge distribution in the oil/paper insulation sample. The more the deterioration of the oil, the larger amount of negative and positive charges accumulated in the bulk of the oil/paper insulation sample. The total amount of slow moving charges, the surface trap energy density, and the electric field distortion of the oil/paper insulation sample increased with the degree of deterioration due to oil aging

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Published date: January 2015
Keywords: oil aging, oil/paper insulation, space charge, pulsed electroacoustic, dc voltage, charge injection
Organisations: EEE

Identifiers

Local EPrints ID: 384016
URI: http://eprints.soton.ac.uk/id/eprint/384016
ISSN: 1931-4973
PURE UUID: 58f06634-7921-4185-ae43-b94bdd95dbd4

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Date deposited: 07 Dec 2015 10:03
Last modified: 19 Jul 2019 20:27

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