Experimental verification of HVDC test sources requirements for pollution tests

Journal Article · Sat Apr 01 04:00:00 EST 1995 · IEEE Transactions on Power Delivery

DOI:https://doi.org/10.1109/61.400831· OSTI ID:64437

Chagas, F A ^[1]; Kuffel, E ^[2]

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1. CEPEL-Centro de Pesquisas de Energia Eletrica, Rio de Janeiro (Brazil)
2. 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--
• Journal Information: IEEE Transactions on Power Delivery, Journal Name: IEEE Transactions on Power Delivery Journal Issue: 2 Vol. 10; ISSN 0885-8977; ISSN ITPDE5
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
ELECTRICAL INSULATORS
FLASHOVER
HVDC SYSTEMS
POWER TRANSMISSION LINES
SURFACE CONTAMINATION