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Influence of the Combustion Flame on the Dielectric Strength of an Air Gap due to Fire Occurrence  

김인식 (경일대학교 전기공학과)
하장호 (삼척산업대학교)
Publication Information
Fire Science and Engineering / v.16, no.1, 2002 , pp. 30-38 More about this Journal
Abstract
Occurring fire or burning bushes beneath overhead power lines have caused system disturbances in many countries. In this study, various tests in the simulated condition of power lines were conducted so as to investigate the reduction in insulation strength caused by combustion flame. Characteristics of the ac and dc flashover voltages in the vertical needle-plane, sphere-plane and rod-plane electrode system were investigated when the combustion flames were present near the high-voltage electrode. As the results of an experimental investigation, It was found that the average reduction characteristics of flashover voltages with the sphere-plane system, in comparison with the no-flames case, were about 1/3 times when the ac voltages were applied.
Keywords
Combustion flames; Flashover voltage; Air gap;
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  • Reference
1 M. Hara, J. Suehiro, S. Sumiyoshitani, and M. Akazaki, ;'Mode and Characteristics of Corona Discharge in High Temperature Air', Trans. on IEE Japan, Vol. 107-A, No.8, pp.379-386(1987)
2 H. Kiwaki and S. Komeji, 'Electerical Properties of Combustion Flames', Journal of Applied Physics Japan, Vol. 41, No. 10, pp.l077-1084 (1972)
3 M. Nagata, I. Miyachi, and Y. Tokoi, 'Breakdown Characteristics of High Temperature Air', Trans. on IEE Japan, Vol. 104, No.6, pp.299-306(1984)
4 F. A. Williams, 'Combustion', Encyclopedia of Physical Science and Technology, VoL 3, pp.211-235, Academic Press, Orlando, Florida(1987)
5 H. J. West and D. W. Mcmullan, 'Fire Induced Flashovers of EHV Transmission Lines', IEEEPES Winter Meeting, New York, Paper A73047-2, February(1978)
6 Electric Power Research Institute, 'lransmission Line Reference Book, 345 kV and Above/Second Edition', pp.381-419(1989)
7 이광식, 이동인, 김인식 외,'컴퓨터시스템에 의한 저온에서의 질소가스에 대한 방전특성 측정', 한국조명.전기설비학회 논문지, 제 8권,제4호, pp.30-37(1994)
8 K. Koyama and T. Sekiguchi, 'The Measurement of the Electrical Conductivity of Seeded Flame Plasmas', Trans. on IEE Japan, Vol. 87-6, No. 945, pp.1145-31151(1987)