A thermal model for the water-cooled stator bars of the synchronous generator

Author

Junqing, Li ; Heming, Li

Author_Institution

Dept. of Electr. Power Eng., North China Electr. Power Univ., Baoding, China

Volume

2

fYear

2002

fDate

2002

Firstpage

756

Abstract

The paper presents a thermal model of the water-cooled stator bars in a large synchronous generator using the equivalent thermal network method. A stator bar is studied, the copper strands and cooling water are divided into elements simultaneously and the temperature of cooling water is also calculated. Then, simple element and more elements analysis methods are used to calculate the temperature of stator bars. A stator bar of a QFQS-200-2 turbo-generator is computed with the proposed methods. The calculated and the measured results are analyzed and the proposed method is validated to be correct.

Keywords

cooling; machine theory; stators; synchronous generators; thermal analysis; turbogenerators; QFQS-200-2 turbogenerator; cooling water; copper strands; equivalent thermal network method; more elements analysis; simple element analysis; synchronous generator; thermal model; water-cooled stator bars; Cooling; Copper; Fault diagnosis; Heat transfer; Monitoring; Stator bars; Synchronous generators; Temperature; Thermal engineering; Water heating;

fLanguage

English

Publisher

ieee

Conference_Titel

Power System Technology, 2002. Proceedings. PowerCon 2002. International Conference on

Print_ISBN

0-7803-7459-2

Type

conf

DOI

10.1109/ICPST.2002.1047500

Filename

1047500