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고전압 전력기기 개발을 위한 기중 임펄스절연파괴특성에 관한 연구
강형구(Hyoungku Kang),김준연(Joon-Yeon Kim),석복렬(Bok-Yeol Seok),김동해(Dong-Hae Kim) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
To develop electrically reliable high voltage apparatuses, the experimental study on the electrical breakdown field strength is needed, as well as theoretical approach. In this paper, lightning impulse breakdown characteristics considering utilization factors are investigated for the establishment of insulation design criteria of an high voltage apparatus. The utilization factors are represented as the ratio of mean electric field to maximum electric field. Dielectric experiments are performed by using five kinds of sphere-plane electrode systems made of stainless steel. As a result, it is found that dielectric characteristics are affected by not only gap length but also utilization factor of electrode systems. The results are expected to be applicable to the design of high voltage apparatuses.