Experimental verification of HVDC test sources requirements for pollution tests
- CEPEL-Centro de Pesquisas de Energia Eletrica, Rio de Janeiro (Brazil)
- Univ. of Manitoba, Winnipeg (Canada). Dept. of Electric and Computer Engineering
This paper presents the results of tests conducted to verify the effect of the voltage source on the critical flashover voltage of dc insulators under pollution. Tests were performed under 3 pollution levels using voltage sources with different voltage drop x leakage current characteristics. A data acquisition system was used to record all current pulses above a certain pre selected current pulse duration, which made possible a complete analysis of current pulses and voltage drops characteristics. The experimental results show that the present restrictions imposed on the dc voltage sources can probably be relaxed. Also from the experimental data collected it was found that the insulator tested presents a constant impedance x current characteristic. This characteristic can be useful in checking theoretical models for polluted insulator flashover.
- OSTI ID:
- 64437
- Report Number(s):
- CONF-940702-; ISSN 0885-8977; TRN: IM9528%%96
- Journal Information:
- IEEE Transactions on Power Delivery, Vol. 10, Issue 2; Conference: 1994 Institute of Electrical and Electronic Engineers/Power Engineering Society (IEEE/PES) summer meeting, San Francisco, CA (United States), 24-28 Jul 1994; Other Information: PBD: Apr 1995
- Country of Publication:
- United States
- Language:
- English
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