DC field measurement in oil/pressboard composite insulation system by electro-optic Kerr effect
DC field measurement in oil/pressboard composite insulation system by electro-optic Kerr effect
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DOI：
10.1109/icdl.2002.1022752
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发表时间：
2002-11
期刊：
影响因子：
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通讯作者：
K. Kato;M. Wakamatsu;N. Inoue;R. Shimizu;Y. Nakagami;H. Okubo
中科院分区：
文献类型：
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作者：
K. Kato;M. Wakamatsu;N. Inoue;R. Shimizu;Y. Nakagami;H. Okubo
在油浸式电力变压器中，通常应用绝缘油/纸板（PB）复合绝缘系统。在系统中，电荷积累在油/PB界面和电场分布的变化取决于时间和油的条件。本文采用克尔电光场测量法直接测量了油/聚丁二烯复合绝缘系统中的直流电场。根据结果，他们提出了电荷行为模型。他们使用有限元法（FEM）计算电场分布，同时考虑到测量的电荷行为。最后，他们证实电荷模型很好地解释了实验结果，包括极性反转的情况。
In oil-immersed power transformers, an insulating oil/pressboard (PB) composite insulation system is generally applied. In the system, charges accumulate at the oil/PB interface and electric field distribution changes depending on time and oil condition. In this paper, the authors directly measured the DC electric field in oil/PB composite insulation system using Kerr electro-optic field measurement. From the results, they proposed the charge behavior model. They calculated the electric field distribution using the finite element method (FEM), taking account of measured charge behavior. Finally, they confirmed that the charge model explains the experimental results well, including in the case of the polarity reversals.