Unusual cases of gassing in transformers in service

被引：20

作者：

Höhlein, I ^{[1
]}

机构：

[1] Siemens AG, PTD T, Transformer Factory, D-90461 Nurnberg, Germany

来源：

IEEE ELECTRICAL INSULATION MAGAZINE | 2006年 / 22卷 / 01期

关键词：

stray gassing; transformer oils; hydrogen; ethane; methane; catalytic phenomena;

D O I：

10.1109/MEI.2006.1618968

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：

Stray gassing in transformers is a phenomenon that occurs when some types of insulating oils are heated at relatively low temperatures producing hydrogen or hydrocarbons. Hydrogen formation caused by stray gassing may be due to strongly hydro-treated oils and is also strongly affected by the transformer material such as grain-oriented or zinc-plated steels and varnishes. This effect may be due to the manufacturing of highly refined oils through hydro-treatment and also catalytic reactions of the oil with metallic surfaces. Uninhibited oils can produce saturated hydrocarbons because of stray gassing with no increase in hydrogen, which may be related to oxidation. The production of methane and ethane during the first years of service may be triggered catalytically by the transformer materials.

引用

页码：24 / 27

页数：4