Dielectric responses of new and aged transformer pressboard in dry and wet states

被引：8

作者：

Gielniak, J ^{[1
]}

Ekanayake, C ^{[1
]}

Walczak, K ^{[1
]}

Graczkowski, A ^{[1
]}

Gubanski, S ^{[1
]}

机构：

[1] Poznan Tech Univ, Inst Elect Power Engn, PL-60965 Poznan, Poland

来源：

Proceedings of the 2005 International Symposium on Electrical Insulating Materials, Vols, 1-3 | 2005年

关键词：

D O I：

10.1109/ISEIM.2005.193569

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：

This paper presents results of dielectric response measurements in frequency domain obtained at different temperatures for oil-impregnated pressboard samples (new and aged) containing different amount of moisture. Description of the sample preparation and the ageing procedure is also included. The dielectric responses were used for defining master curves and activation energies at the different humidity levels, to be later used in the modelling of diagnostic measurements on transformers. Spread of the results from samples containing similar amount of moisture are also presented.

引用

页码：386 / 389

页数：4