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Experimental investigation of temperature effect on corrosive sulfur formation in transformers

机译：温度对变压器中腐蚀性硫形成影响的实验研究

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This paper presents experimental findings of the effect of temperature on corrosive sulfur formation in transformers. To conduct the experimental study, new transformer oil was randomly selected and heated at 40, 60, 80, 120, and 150 °C temperature for 72 hours each along with copper strips wrapped with insulation paper and immersed in oil in accordance with IEC-62535 standard test covered conductor deposition (CCD). The oil, copper strips, and the insulation paper samples were evaluated using gas chromatography-sulfur chemiluminescence detector (GC-SCD), X-ray fluorescence spectroscopy (XRF), inductively coupled plasma optical emission spectrometry (ICP), and scanning electron microscopy (SEM) tests after 72 hours exposure at each temperature. The values so obtained, were analyzed and effect of temperature on various parameters was studied individually and as well as collectively. It was found that temperature plays an important role on corrosive sulfur formation process inside the transformers and hence the temperature of the oil should be kept within the allowed operating ranges for avoiding unforeseen failures.
机译：本文介绍了温度对变压器中腐蚀性硫形成的影响的实验结果。为了进行实验研究，随机选择了新的变压器油，并按照IEC-62535的规定，将其与绝缘纸包裹并浸入油中的铜条一起分别在40、60、80、120和150°C的温度下加热72小时。标准测试覆盖导体沉积（CCD）。使用气相色谱-硫化学发光检测器（GC-SCD），X射线荧光光谱法（XRF），电感耦合等离子体发射光谱法（ICP）和扫描电子显微镜对油，铜带和绝缘纸样品进行评估（在每个温度下暴露72小时后进行SEM）测试。分析如此获得的值，并分别或共同研究温度对各种参数的影响。已发现温度在变压器内部腐蚀性硫的形成过程中起着重要作用，因此油的温度应保持在允许的工作范围内，以避免不可预见的故障。

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