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Breakdown characteristics of transformer oil at DC polarity reversal voltage
Author(s): 
Pages: 46-51
Year: Issue:  3
Journal: Electric Machines and Control

Abstract: 为了获得换流变压器中变压器油在极性反转电压下的击穿特性,使用一种三电极模型,在不同间隙和温度下,对变压器油隙进行了极性反转电压击穿实验研究.击穿结果表明:极性反转电压下,变压器油的击穿场强没有随油间隙增加而降低;变压器油的击穿场强与温度相关,在实验温度范围内,40℃时出现了最大值.监测流过油隙的电流,发现在极性反转后电流变化曲线出现了随温度明显变化的暂态过程.针对传统液体电导理论不能对实验结果进行...
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