Postmortem Investigation of Power Transformers-Profile of Degree of Polymerization and Correlation With Furan Concentration in the Oil

被引：46

作者：

Leibfried, Thomas ^{[1
]}

Jaya, Michael ^{[2
]}

Majer, Norbert ^{[3
]}

Schaefer, Michael ^{[4
]}

Stach, Manfred ^{[5
]}

Voss, Stephan ^{[6
]}

机构：

[1] Karlsruhe Inst Technol, Inst Elect Energy Syst & High Voltage Technol IEH, D-76021 Karlsruhe, Germany

[2] Karlsruhe Inst Technol, D-76021 Karlsruhe, Germany

[3] TenneT TSO GmbH, D-95448 Bayreuth, Germany

[4] TransnetBW, D-70174 Stuttgart, Germany

[5] EON New Build & Technol GmbH, D-45896 Gelsenkirchen, Germany

[6] Siemens AG, D-90461 Nurnberg, Germany

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2013年 / 28卷 / 02期

关键词：

Concentration of furans in the oil; degree of polymerization; paper degradation; postmortem aging investigation of power transformers;

D O I：

10.1109/TPWRD.2013.2245152

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：

In this paper, postmortem aging investigations on insulation material of power transformers are presented. A methodology for taking paper samples in a systematical manner and a scheme for calculating an average degree of polymerization (DP) for the entire transformer out of the DP values of the individual paper samples will be shown. The typical DP profile in the axial direction of transformer coils will be explained using calculated distribution of losses within the coils of a 740-MVA generator stepup transformer. Further, correlations between the furan (2-FAL) concentration in the oil and the average DP of the investigated German GSU transformers and grid transformers are derived and compared with existing correlations.

引用

页码：886 / 893

页数：8

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