This paper is aimed at investigating the electric field, the positive-corona onset-voltage and current-voltage relationship of tree-shaped multi-needle-to-plane configurations. The configurations include 1, 5, 9, 13 and 17 needles arranged in one, two and three layers. The well-known charge simulation method was used to calculate the electric field in the gap spacing between positively-stressed needle-arrangements and opposite ground plane. Based ...
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