The University of Southampton
University of Southampton Institutional Repository

Space charge characteristics in oil and oil-impregnated pressboard and electric field distortion after polarity reversal

Space charge characteristics in oil and oil-impregnated pressboard and electric field distortion after polarity reversal
Space charge characteristics in oil and oil-impregnated pressboard and electric field distortion after polarity reversal
The formation of space charge in the oil/paper insulation under HVDC condition could influence the electric field distribution. In the case of HVDC converter transformer, the distortion of the electric field may affect its performance. It is, therefore, important to analyze factors that can affect space charge formation and dissipation characteristics such as temperature, moisture, electric stress and ageing process. This paper mainly focuses on the effect of electric stress and oil ageing on space charge characteristics in oil/paper insulation system. The pulsed electroacoustic technique (PEA) method was used to monitor space charge dynamics. This data was further incorporated into a model established using COMSOL software to estimate space charge impact on electric field distribution, with an emphasis on the electric field after polarity reversal operation. The results show that the electric field arising from the space charge formation is much higher compared to the average electric field after the polarity reversal operation. Moreover, the electric field caused by space charge decreases faster for the aged oil-impregnated pressboard compared to the fresh one, which could be related to different space charge dissipation characteristic related to the condition of the oil.
881-891
Huang, Bo
8213448b-060c-4d70-b898-d00c6ac754a5
Hao, Miao
fb7006e0-07c0-46f5-9279-e30a7d3bd614
Hao, Jian
01bbfea6-2a3e-40b3-bb0c-1c16d6dcd66d
Fu, Jin
ffe9caa5-b98c-41af-aac2-948ad3de0287
Wang, Qian
a9a64412-49cc-4ab7-9bb6-646551219d66
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Huang, Bo
8213448b-060c-4d70-b898-d00c6ac754a5
Hao, Miao
fb7006e0-07c0-46f5-9279-e30a7d3bd614
Hao, Jian
01bbfea6-2a3e-40b3-bb0c-1c16d6dcd66d
Fu, Jin
ffe9caa5-b98c-41af-aac2-948ad3de0287
Wang, Qian
a9a64412-49cc-4ab7-9bb6-646551219d66
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819

Huang, Bo, Hao, Miao, Hao, Jian, Fu, Jin, Wang, Qian and Chen, George (2016) Space charge characteristics in oil and oil-impregnated pressboard and electric field distortion after polarity reversal. IEEE Transactions on Dielectrics & Electrical Insulation, 23 (2), 881-891. (doi:10.1109/TDEI.2015.005413).

Record type: Article

Abstract

The formation of space charge in the oil/paper insulation under HVDC condition could influence the electric field distribution. In the case of HVDC converter transformer, the distortion of the electric field may affect its performance. It is, therefore, important to analyze factors that can affect space charge formation and dissipation characteristics such as temperature, moisture, electric stress and ageing process. This paper mainly focuses on the effect of electric stress and oil ageing on space charge characteristics in oil/paper insulation system. The pulsed electroacoustic technique (PEA) method was used to monitor space charge dynamics. This data was further incorporated into a model established using COMSOL software to estimate space charge impact on electric field distribution, with an emphasis on the electric field after polarity reversal operation. The results show that the electric field arising from the space charge formation is much higher compared to the average electric field after the polarity reversal operation. Moreover, the electric field caused by space charge decreases faster for the aged oil-impregnated pressboard compared to the fresh one, which could be related to different space charge dissipation characteristic related to the condition of the oil.

Text
TDEI_4_2.pdf - Version of Record
Restricted to Repository staff only
Request a copy

More information

Accepted/In Press date: 12 November 2015
Published date: April 2016
Organisations: EEE

Identifiers

Local EPrints ID: 402981
URI: http://eprints.soton.ac.uk/id/eprint/402981
PURE UUID: dd9a2654-6021-4561-9663-3d5f90780442

Catalogue record

Date deposited: 21 Nov 2016 14:13
Last modified: 16 Dec 2019 19:36

Export record

Altmetrics

Contributors

Author: Bo Huang
Author: Miao Hao
Author: Jian Hao
Author: Jin Fu
Author: Qian Wang
Author: George Chen

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×