温度对油纸绝缘极化去极化电流的影响

发布时间：2018-07-11 14:59

本文选题：变压器 + 油纸绝缘　；参考：《电工技术学报》2014年04期

【摘要】：温度是影响介电响应方法测量结果的重要因素之一。为解决温度对极化去极化电流的影响,本文参照变压器绕组绝缘结构制作了油纸绝缘样品,测量了油纸样品在不同温度下的极化去极化电流,并提出了消除温度对极化去极化电流影响的新方法。结果表明:极化去极化电流均随温度升高而增大;极化去极化电流随测量时间逐渐减小并趋于稳定,去极化电流的"拐点"出现的时间随温度升高而减小;不同温度下的极化去极化电流均可通过时间平移因子和幅值平移因子移动到一条主曲线,消除了测试温度的影响;极化去极化电流的时间平移因子和幅值平移因子均满足Arrhenius方程,且利用时间平移因子和幅值平移因子分别求得油纸绝缘样品的活化能相差不大,约为61kJ/mol。
[Abstract]:Temperature is one of the important factors affecting the measurement results of dielectric response method. In order to solve the effect of temperature on the polarization depolarization current, the oil paper insulation sample was made according to the insulation structure of transformer winding, and the polarization depolarization current of the oil paper sample at different temperature was measured. A new method to eliminate the effect of temperature on the polarization depolarization current is proposed. The results show that the polarization depolarization current increases with the increase of temperature, the polarization depolarization current decreases and tends to be stable with the measurement time, and the time of the "inflection point" of the depolarization current decreases with the increase of temperature. The polarization depolarization current at different temperatures can be moved to a main curve by time translation factor and amplitude translation factor, which eliminates the influence of test temperature. The time translation factor and amplitude translation factor of polarization depolarization current both satisfy the Arrhenius equation, and the activation energy of oil-paper insulation samples obtained by using the time translation factor and amplitude translation factor is about 61kJ / mol.
【作者单位】：广东电网公司电力科学研究院;重庆大学输配电装备及系统安全与新技术国家重点试验室;国网重庆市电力公司电力科学研究院;云南省电力科学研究院(集团)有限公司;
【基金】：国家重点基础研究发展计划(973计划)(2009CB724505-1) 云南省电力科学研究院和重庆市百名杰出科技领军人才培养计划资助项目
【分类号】：TM855.1

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