In this paper, the dielectric strength was improved by the insulating barrier which was interposed and moved in position, between three typical electrode systems (sphere-sphere, sphereplate, and rod-plate) in oil insulations. The respective electric f...
In this paper, the dielectric strength was improved by the insulating barrier which was interposed and moved in position, between three typical electrode systems (sphere-sphere, sphereplate, and rod-plate) in oil insulations. The respective electric field form was analyzed by using the two dimensional finite element methods and compared the above analized results with experimental results discharge characteri8stics for the positive impulse breakdown voltage.
Conculsions obtained from theses analyses and comparisons were as follows;
1. The effect of barrier systems was most effective in the non-uniform electric field form
2. It was found that the dielectric strength rises when a barrier is located to the high voltage source electrode.
3. The results of analysis of electric field form were higher than the experimental dielectric strength, but the latter was found to have close relation with the distribution of electric field form.