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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kist, K. Badent, R. Brand, M. Schwab, A.J. |
| Copyright Year | 1999 |
| Description | Author affiliation: Inst. of Electr. Energy Syst. & High-Voltage Technol., Karlsruhe Univ., Germany (Kist, K.) |
| Abstract | This paper presents results from the experimental study of the charge and light emission behaviour of prebreakdown phenomena in insulating oil. The investigations were carried out in the strong non-uniform field of a 85 mm point-plane geometry with square-wave voltages up to 600 kV. The pre-breakdown phenomena were evaluated by recordings of charge and correlated light emission, as well as high-speed photographs. Previous investigations have evidenced a strong temporal correlation between light pulses and current pulses or charge steps, resp., at positive voltages with amplitudes close to the 50%-breakdown voltage. Now, this correlation is also proven for higher voltages for polarities. While at low voltages, primary streamers show a linear rise of charge which changes subsequently into a step-wise growth, high overvoltages result in the occurence of faster secondary streamers with an exponential charge increase. The initiation of a tertiary streamer leads to a dramatic rise of the charge, i.e. during some nanoseconds the output range (4000 nC) of the charge sensor is saturated. |
| Starting Page | 451 |
| Ending Page | 454 |
| File Size | 257180 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780354141 |
| DOI | 10.1109/CEIDP.1999.807832 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1999-10-17 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Oil insulation Petroleum Charge measurement Electric breakdown Current measurement Optical propagation Photography Breakdown voltage Cameras Testing |
| Content Type | Text |
| Resource Type | Article |
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