Space charge characteristics of multi-layer oil-paper insulation under different DC voltages
Tang, Chao, Chen, George, Fu, Mingli and Liao, Ruijing (2009) Space charge characteristics of multi-layer oil-paper insulation under different DC voltages. In, The 9th International Conference on Properties and Applications of Dielectric Materials, Harbin, China, 19 - 23 Jul 2009. IEEE, 914-917.
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Description/Abstract
In this paper, space charge in oil-paper insulation system has been investigated using the pulsed electroacoustic (PEA) technique. A series of measurements were carried out when the insulation system was subjected to different applied voltages. Charge dynamics in the insulation system during the volts-on, volts-off and decay have been analyzed. It has been found that homocharge injection occurred both at the anode and the cathode. Positive charges are observed to accumulate in the layers, which indicate that the oil-paper layer interfaces act as a barrier for positive charges. The decay tests showed that after 30min, about a quarter of space charges remained in the sample, about 90% charges disappeared after 2 hours. Finally, total charge variation in these tests were analyzed.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Additional Information: | Event Dates: 19 - 23 July 2009 |
| ISBNs: | 9781424443666 |
| Keywords: | Space Charge, Oil-paper, DC Voltage, Multi-layer |
| Divisions: | Faculty of Physical and Applied Science > Electronics and Computer Science > EEE |
| Item ID: | 267784 |
| Date Deposited: | 18 Aug 2009 09:42 |
| Last Modified: | 23 Aug 2012 03:51 |
| Contributors: | Tang, Chao (Author) Chen, George (Author) Fu, Mingli (Author) Liao, Ruijing (Author) |
| Date: | 19 July 2009 |
| Additional Information: | Event Dates: 19 - 23 July 2009 |
| Status: | Published |
| Publisher: | IEEE |
| Further Information: | Google Scholar |
| ISI Citation Count: | 0 |
| URI: | http://eprints.soton.ac.uk/id/eprint/267784 |
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