Study on loss-of-life and insulation aging of traction transformer based on DGA

Author

Zhou, Lijun ; Wu, Guangning ; Chong, Su ; Wan, Hongl Iang

Author_Institution

Sch. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China

Volume

2

fYear

2005

Firstpage

483

Abstract

Characteristic of traction loads as well as aging mechanism of insulation is analyzed. Then computer simulation about temperature of winding is achieved. Based on results, a new experimental system is designed to study the relationship between insulating aging and traction loads. The gases dissolved in oil (GDO) of experiment transformer such as CO and CO₂ is monitored and analyzed. The affect of thermal surge on insulation aging is studied through comparing the GDO of transformer under surge loads and equivalent loads. Test results show that the traction loads seriously affect insulation aging and loss-of-life of traction transformer, which should not be neglected.

Keywords

ageing; carbon compounds; chemical analysis; insulation testing; power transformer insulation; power transformer testing; surges; thermal insulating materials; traction power supplies; transformer oil; transformer windings; CO; CO₂; computer simulation; gases dissolved; insulation aging mechanism; loss-of-life; oil; thermal surge; traction load characteristic; transformer; winding temperature; Aging; Computer simulation; Computerized monitoring; Dissolved gas analysis; Gases; Oil insulation; Petroleum; Power transformer insulation; Surges; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 2005. (ISEIM 2005). Proceedings of 2005 International Symposium on

Print_ISBN

4-88686-063-X

Type

conf

DOI

10.1109/ISEIM.2005.193594

Filename

1496194