Investigation of temperature rise and permissible load current of water-cooled generators with blockage of hollow sub-conductors

Author

Naghashan, M.R. ; Shoar, D. Hekmat

Author_Institution

Power & Water Inst. of Technol., Tehran

fYear

2005

fDate

26-26 Oct. 2005

Firstpage

85

Lastpage

88

Abstract

Temperature rise of insulation can be due to the blockage of the hollow sub-conductors in water-cooled bars. The objective of this project is to make a software simulator to analyze the problem in water-cooled generators in Iran. An experimental setup is constructed to recognize the hollow sub-conductor blockage and its effect on the permissible load current of the generator bar. Results of experiments are used to develop an evaluation software model. The model is applied in air and in hydrogen medium. Measured temperatures of various points on the generator bar show that the hot spot of the insulation can not be detected easily by normal slot RTDs in the machine

Keywords

bars; cooling; electric generators; electric machine analysis computing; hydrogen; machine insulation; temperature measurement; Iran; RTD; air medium; hydrogen medium; insulation temperature rise; software simulator; sub-conductor blockage; temperature measurement; water-cooled generator bar; Bars; Character generation; Conductors; Induction generators; Insulation; Land surface temperature; Power generation; Temperature measurement; Temperature sensors; Water;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation Conference and Electrical Manufacturing Expo, 2005. Proceedings

Conference_Location

Indianapolis, IN

Print_ISBN

0-7803-9145-4

Type

conf

DOI

10.1109/EEIC.2005.1566264

Filename

1566264