MATEC Web Conf.
Volume 139, 20172017 3rd International Conference on Mechanical, Electronic and Information Technology Engineering (ICMITE 2017)
|Number of page(s)||4|
|Published online||05 December 2017|
Analysis and Aesearch of White Spot on Creepage Discharge in oil-Pressboard Interface
1 State Grid Jibei Electricity Power Maintenance Company, Beijing
2 BeiJing Power Equipment Group co., LTD., Beijing
Creepage discharges on oil impregnated pressboard is one of the most dangerous transformer insulation fault, which can cause the gas action even transformer housing cracking accident. “White spot” is creepage important phenomena in the process of insulation board along the surface, so it is necessary to study the insulation board along the surface of creepage “white spot” in the process of growth characteristics. This paper set up a insulating paper along the surface of creepage “white spot” in the process of growth characteristics of observation platform. Numerical example was calculated under different aging degree creepage cardboard along the surface of the “white spot” in the process of change, statistics and analysis of the “white spot” length, angle and size variation, which is very practical to the production practice.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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