Title :
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
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;
Conference_Titel :
Power System Technology, 2002. Proceedings. PowerCon 2002. International Conference on
Print_ISBN :
0-7803-7459-2
DOI :
10.1109/ICPST.2002.1047500
