Experimental simulation of effects of copper sulphide on insulation system of transformers
Experimental simulation of effects of copper sulphide on insulation system of transformers
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DOI：
10.1109/tdei.2014.004408
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发表时间：
2015-02
影响因子：
3.1
通讯作者：
F. Khan;J. S. Rajan
中科院分区：
文献类型：
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作者：
F. Khan;J. S. Rajan
矿用变压器油中腐蚀性硫磺的存在影响了变压器绝缘系统的性能。本文介绍并讨论了在硫化铜存在下，纸油绝缘的电压、电流特性和绝缘电阻的实验研究结果。提出了硫化铜迁移模型，解释了泄漏电流增大和绝缘电阻减小的原因。讨论和解释了电压电流特性中存在的两个区域，一个取决于纸油绝缘的绝缘性能，另一个取决于半导体硫化铜的绝缘性能。
The presence of Corrosive sulphur in mineral transformer oil affects the performance of insulation system of transformers. In this paper results of experimental investigations carried out on voltage current characteristics and insulation resistance of paper oil insulation in presence of copper sulphide are presented and discussed. A model for copper sulphide migration is proposed to explain the increase in leakage current and reduction in insulation resistance. Existence of two regions in voltagecurrent characteristics, one dependent on the insulation properties of paper oil insulation and other due to semi-conducting copper sulphide is discussed and explained.