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DC characterization of isoparaffinic insulation oil
IEEE Transactions on Dielectrics and Electrical Insulation ( IF 3.1 ) Pub Date : 2020-10-01 , DOI: 10.1109/tdei.2020.008729
Nils Lavesson , Lars Walfridsson , Joachim Schiessling

Converter transformers in HVDC stations are subject to both AC and DC stresses. With new oils entering the market it is important that these are characterized both for AC and DC. This paper focuses on DC characterization of one such oil, which is an isoparaffinic oil produced using a gas to liquid production process. The results are compared to mineral oil as reference. The isoparaffinic oil is shown to have a very high resistivity. In fact, the resistivity is so high that it is more resistive than impregnated pressboard with low moisture content. This is a dielectric risk which must be considered if the oil is to be used in converter transformers.

中文翻译:

异链烷烃绝缘油的直流表征

HVDC 站中的换流变压器同时承受交流和直流应力。随着新油进入市场,重要的是这些油具有交流和直流特性。本文重点介绍一种此类油的 DC 表征,该油是一种使用气液生产工艺生产的异链烷烃油。将结果与作为参考的矿物油进行比较。异链烷烃油显示出具有非常高的电阻率。事实上,电阻率是如此之高,以至于它比含水量低的浸渍纸板更具电阻性。如果将油用于换流变压器,则必须考虑到介电风险。
更新日期:2020-10-01
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