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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Saito, T. Suzuoki, Y. Komori, F. Uchida, K. |
| Copyright Year | 2005 |
| Description | Author affiliation: Nagoya Univ., Japan (Saito, T.; Suzuoki, Y.) |
| Abstract | In order to clarity the mechanism of electrical-tree inception and propagation from a water tree within polyethylene, we carried out simultaneous observation of partial discharge (PD) characteristics, electrical-tree inception and propagation and associated light emission. The AC electrical-tree inception voltage increased with increasing water-tree degradation, which was attributed to field moderation due to space charge formed in the water-tree region. To investigate the intrinsic tree inception process without the effect of field moderation, tree inception and propagation under impulse-voltage application and under dry condition was studied. The increase in tree-inception voltage under impulse voltage was much higher than AC-tree-inception voltage, suggesting increase in the intrinsic breakdown strength in and/or near water-tree region. The drying of water-tree region led to lower tree inception voltage and this is consistent with the above presumption. |
| Starting Page | 540 |
| Ending Page | 543 |
| File Size | 1494399 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780392574 |
| DOI | 10.1109/CEIDP.2005.1560739 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-10-16 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Trees - insulation Degradation Needles Electrodes Partial discharges Breakdown voltage Steel Optical propagation Polyethylene Educational institutions |
| Content Type | Text |
| Resource Type | Article |
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