Aging of paper insulation in natural ester dielectric fluid

被引：61
|
作者：
McShane, CP [1 ]
Rapp, KJ [1 ]
Corkran, JL [1 ]
Gauger, GA [1 ]
Luksich, J [1 ]
机构：
[1] Dielectr Fluids Grp, Cooper Powe Syst, Waukesha, WI 53188 USA
来源：
2001 IEEE/PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION, VOLS 1 AND 2: DEVELOPING NEW PERSPECTIVES | 2001年
关键词：
aging; dielectric liquids; dielectric materials; insulation; insulation life; life estimation; oil insulation; paper insulation; power transformers; transformers;
D O I：
10.1109/TDC.2001.971319
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Aging of transformer insulation paper in natural ester (vegetable oil) dielectric fluid is compared to that in conventional transformer oil. Scaled steel aging vessels containing copper, aluminum, thermally upgraded paper, and dielectric fluid (mineral oil and natural ester) were aged at 130, 150, and 170degreesC for 500, 1000, 2000, and 4000 hours. Paper degradation after aging is determined using paper tensile strength and degree of polymerization measurements. The paper in natural ester aged at slower rates than did paper in conventional transformer oil, taking 58 times longer to reach end-of-life. Results obtained for mineral oil samples are similar to predictions based an IEEE transformer loading guide calculations. Mechanisms for the slower aging rate are proposed.
引用
收藏
页码：675 / 679
页数：5
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