植物油对变压器导线磁漆绝缘击穿电压的影响

N. Dung, N. Long, L.Q. Khuong
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引用次数: 0

摘要

研究了变压器导线在米油、玉米油和花生油中的绝缘击穿电压。实验分别在新条件和旧条件下进行。结果表明,无论在新工况还是旧工况下,植物油的击穿电压均高于矿物油。老化过程对植物油和矿物油的击穿电压均有显著影响。植物油中的搪瓷绝缘体比矿物油中的绝缘体耐更高的击穿电压。老化过程对搪瓷绝缘的击穿电压有负向影响。大大降低了搪瓷绝缘的击穿电压。同时还观察到,搪瓷绝缘显著提高了压板面击穿电压。而且,在老化条件下,这种增强作用在植物油中更为明显。
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Influence of Vegetable Oils on Breakdown Voltages of Enamel Insulation of Transformer Wire
This paper investigates breakdown voltages of enamel insulation of transformer wire in rice oil, corn oil and peanut oil. Experiments were performed with both new and aged conditions. It was found that vegetable oils show higher breakdown voltages in comparison with mineral oil for both new and aged conditions. Ageing process significantly affected the breakdown voltages of both vegetable oils and mineral oil. Enamel insulation in vegetable oils withstood higher breakdown voltages than in mineral oil. Ageing process had a negative effect on the breakdown voltage of enamel insulation. It greatly reduced the breakdown voltage of enamel insulation. It was also observed that enamel insulation markedly enhanced surface breakdown voltages of pressboard. Moreover, this enhancement is more pronounced in vegetable oils under aged condition.
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