Relationships between Methanol Marker and Mechanical Performance of Electrical Insulation Papers for Power Transformers under Accelerated Thermal Aging

被引：57

作者：

Arroyo, Oscar H. ^{[1
]}

Fofana, Issouf ^{[1
]}

Jalbert, Jocelyn ^{[2
]}

Ryadi, Mohamed ^{[3
]}

机构：

[1] Univ Quebec Chicoutimi, Canada Res Chair Insulating Liquids & Mixed Diele, 555 Blvd Univ, Chicoutimi, PQ G7H 2B1, Canada

[2] Inst Rech Hydro Quebec, Varennes, PQ J3X 1S1, Canada

[3] Elect France, R&D, F-92141 Clamart, France

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2015年 / 22卷 / 06期

关键词：

Alcohol markers; mechanical properties; tensile index; power transformer; degree of polymerization; methanol; ethanol; CELLULOSE DEGRADATION; MINERAL-OILS; ETHANOL;

D O I：

10.1109/TDEI.2015.005386

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：

The mechanical performance of two commercial papers used as solid insulation in power transformers, namely standard Kraft and a thermally upgraded Kraft paper, were studied during accelerated aging in Luminol oil at 170 degrees C. The results show a relationship between the degree of polymerization and the mechanical properties measured by tensile testing. A linear relationship was found between the mechanical properties of paper, the tensile index (Tidx), and the concentration of methanol present in the oil. The methanol chemical marker has been proven to be an accurate assessment tool for the aging of cellulosic paper. The results show a promising tool for correlating the methanol concentration in oil, as an indirect indicator, with the mechanical performance of the paper. This approach can be used to monitor the real state of the cellulose chains in the power transformer insulation paper.

引用

页码：3625 / 3632

页数：8

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