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Contamination Flashover Voltage Performance of Hydrophobic Polymer Insulators

Contamination Flashover Voltage Performance of Hydrophobic Polymer Insulators
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Flashover and Transformer Voltage

IEEJ Transactions on Industry Applications, 2010
This thesis stated many examples about transformer voltage on the direct current motor and generator that those were measured. They suggest that a flashover occurrence often has an indirect influence.
Kensho Sugimoto, Yuji Nakanishi, Noboru Morita   +2 more
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Flashover of a Liquid Conducting Film Part 1: Flashover Voltage

IEEE Transactions on Electrical Insulation, 1982
We have studied the phenomenon of flashover in a configuration related to that of flashover of high voltage insulators under polluted conditions: a glow discharge is struck at the surface of a liquid, and if the applied voltage is above a critical value, flashover occurs.
G. Peyregne, A. M. Rahal, C. Huraux
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Flashover voltage of artificially contaminated surfaces

Proceedings of the Institution of Electrical Engineers, 1971
Tests were carried out to analyse the influence of geometrical and physical parameters of a contaminating layer on the flashover of small flat surfaces. The wet-contaminant method was used, and the alternating and direct flashover voltages were related to different values and distributions of thickness, width and resistivity of the contaminant layer ...
B. Macchiaroli, M. Rea
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Flashover Mechanism of High Voltage Insulators

IEEE Transactions on Power Apparatus and Systems, 1979
The elementary phenomenon involved in flashover of high voltage insulators is the propagation of a discharge at the surface of an electrolyte. The study reveals two requirements: 1-Electrical conditions (applied voltage and discharge current) have to be fulfilled so that the discharge can be sustained by the power source throughout the elongation ...
A. Rahal, C. Huraux
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Minimum Flashover Voltage of Iced Insulators

IEEE Transactions on Electrical Insulation, 1983
Experimental studies were performed in a 4.8×2.8×3.5 m3 cold room with a HV transformer of 124 kVA, 120 kV. Atmospheric ice was accreted on a vertical string of three types of insulators: a classic glass insulator and two long-rod synthetic insulators. The results obtained show that flashover occurs at the lowest voltage with hard rime formed at -12°C ...
L. C. Phan, H. Matsuo
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Effects of soluble constituents on insulator flashover performance and flashover voltage prediction

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), 2015
Pollution materials affect insulator flashover performance, and there is long-term significance in researching it. In this paper, common kinds of nitrates were used as the soluble pollution, and the ac flashover tests of typical glass insulator were carried out. During the tests, the samples were polluted by dipping method. Also, up-and-down method was
Dongdong Zhang, Zhijin Zhang, Zhongyi Yang, Youchao Liu, Xingliang Jiang   +4 more
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Polluted insulator flashover model for ac voltage

IEEE Transactions on Dielectrics and Electrical Insulation, 1995
Considerable theoretical and experimental research on polluted insulators has yet to yield a perfect generalized mathematical model which can predict accurately critical flashover voltages and currents. In this paper an ac model has been proposed especially applicable to static arcs.
P.S. Ghosh, N. Chatterjee
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Flashover voltage of contaminated insulators

Conference Record of the 1988 IEEE International Symposium on Electrical Insulation, 2003
Methods have been developed for the calculation of flashover voltage of contaminated circular strip models and outdoor insulators of practical but simple geometric shape. The criteria for discharge elongation and the assumptions made are examined. A typical flow diagram of the programs for evaluating the critical values using the equations derived is ...
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DC Flashover Voltage Characteristics of Contaminated Insulatirs

IEEE Transactions on Electrical Insulation, 1981
An investigation was made of the influence of the dc power source on the withstand voltage ofntam-contaminated insulators. A thyristor-controlled power source was found stiff enough for the tests. DC contamination tests on various insulators were also carried out. The dc withstand voltage is generally lower than the ac one (rms).
T. Fujimura, K. Naito, Y. Suzuki
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