| 基于极化/去极化电流法的变压器油纸绝缘影响因素研究 |
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| 引用本文： | 彭永洪,王林,李永军,马强,杨平,周利军.基于极化/去极化电流法的变压器油纸绝缘影响因素研究[J].电气开关,2014(4):65-68. |
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| 作者姓名： | 彭永洪 王林 李永军 马强 杨平 周利军 |
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| 作者单位： | 国网四川省电力公司南充供电公司;西南交通大学电气工程学院; |
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| 摘 要： | 极化/去极化电流法作为一种新的反映变压器油纸绝缘状态的新方法,但环境因素尤其是温度和水分对油纸绝缘极化/去极化电流曲线有严重影响.为表征温度和水分对油纸绝缘极化/去极化电流特性变化规律,对极化/去极化电流法进行了建模,搭建了实验室测试平台,测试了油纸绝缘系统在不同温度和水分含量条件下的极化/去极化电流特性.结果表明：极化/去极化电流随温度升高、水分增加而增大,参数σ和a与温度和水分密切相关,可以作为评估油纸绝缘的绝缘状态的特征量.
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| 关 键 词： | 极化/去极化电流 温度 水分 油纸绝缘 变压器 |
Factors Influencing Polarization and Depolarization Current Characteristics of Oil Paper Insulation |
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| Affiliation: | PENG Yong-hong, WANG Lin , LI Yong-jun, MA Qiang, YANG Ping , ZHOU Li-jun (1. Nanchong Power Supply Company,State Grid Sichuan Electric Power Corporation ,Nanchong 617000, China; 2. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China) |
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| Abstract: | Polarization and depolarization current method, as a new way to reflect the status of oil paper insulation, wasseriously affected by environmental factors, especially temperature and moisture content. In order to characterize the vari-ation of the polarization and depolarization current of oil paper insulation at different temperatures and moisture contents,model of polarization and depolarization current method was established and an experimental system was designed tomeasure the polarization and depolarization current of oil paper insulation at different temperatures and moisture con-tents. The results show that the polarization and depolarization current increases with temperature and moisture content, itis concluded that parameter tr and a is closely related toparameters for the condition of oil paper insulation.temperature and moisture content, and can be as characteristic |
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| Keywords: | polarization and depolarization current temperature moisture content oil paper insulation transformer |
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