Moisture solubility for differently conditioned transformer oils

被引：58

作者：

Du, Y ^{[1
]}

Mamishev, AV ^{[1
]}

Lesieutre, BC ^{[1
]}

Zahn, M ^{[1
]}

Kang, SH ^{[1
]}

机构：

[1] MIT, Dept Elect Engn & Comp Sci, Electromagnet & Elect Syst Lab, Cambridge, MA 02139 USA

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2001年 / 8卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1109/94.959706

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

It is important to monitor the moisture content of transformer oil in a transformer. One parameter of particular interest is the moisture solubility of transformer oil. It has been reported that transformer oils under different conditions have different solubility. Measurements of solubility for four different types of conditioned oil are presented in this paper: fresh Shell Diala AX oil, lab-aged Shell Diala A oil, Texas Utility used transformer oil, and Ramapo Substation used transformer oil. To avoid the difficulty of achieving full saturation, this paper proposes an alternative method of measuring the moisture solubility in transformer oil using a relative humidity sensor. It utilizes the linearity between the relative humidity of the oil and the moisture content of the oil, to measure the solubility indirectly. The measured results of fresh oil, lab-aged oil, and the Texas Utility oil are very close, and only Ramapo oil shows different sensor response characteristics and solubility.

引用

页码：805 / 811

页数：7

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