Heat transfer optimization of end winding rotor generator by the use of modified axial spacer: a case study
Authors:
- Y. Baskoro,
- I. Jaya,
- A. Glowacz,
- M. Sułowicz,
- W. Caesarendra
Abstract
This paper presents a case study of a rotor fault occurring in the rotor generator of a steam power plant located in Lontar, Banten Province, Indonesia. The steam power plant has 3 x 315 MV capacity and uses hydrogen in the cooling system. The issue arising during the operation was caused by heat transfer exceeding the normal level. The grounding of the rotor occurred through rising vibration and temperature, tripping the generator unit. During repairs, the axial spacer was replaced with a new model, where it is longer than the original, adding a bar spacer at a previously unavailable position and creating a cooling track profile. This is a case study on the replacement of the axial spacer model aimed at preventing the expansion of the winding, so as not to touch with each other, through the installation of a longer axial spacer and the addition of the spacer bar, and lastly adding the track profile to the cooling hydrogen gas flow thereby maximizing the cooling process from the end winding rotor generator. Heat transfer is an analysed parameter related to the model change of the axial spacer. The addition of a track cooling gas flow has been able to maximize the heat transfer process, which is simulated in this paper. The performance of the rotor generator increased through several parameters after the replacement of the axial spacer model.
- Record ID
- CUT2c0a4b7065ab4502a0451c2dec4a878e
- Publication categories
- ; ;
- Author
- Journal series
- Journal of Physics - Conference Series, ISSN 1742-6588, e-ISSN 1742-6596, [1742-6596]
- Issue year
- 2021
- Vol
- 1845
- Pages
- [1-9]
- Article number
- 012081
- Other elements of collation
- fot.; rys.; schem.; tab.; Bibliografia (na s.) - 8-9; Bibliografia (liczba pozycji) - 12; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 1845
- Substantive notes
- Inf. przy Vol.: The International Conference on Industrial Automation, Smart Grid and its Application (ICIASGA) 2020 4-5 November 2020, Jawa Timur, Indonesia
- Conference
- 1st International Conference on Industrial Automation, Smart Grid and its Application (ICIASGA), 2020, 04-10-2020 - 05-10-2020, Online, Indonezja
- Keywords in English
- heat transfer, optimization, winding, rotor, generator, modified axial spacer
- DOI
- DOI:10.1088/1742-6596/1845/1/012081 Opening in a new tab
- URL
- https://iopscience.iop.org/article/10.1088/1742-6596/1845/1/012081 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 40
- Publication indicators
- = 1
- Citation count
- 1
- Additional fields
- Indeksowana w: Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT2c0a4b7065ab4502a0451c2dec4a878e/
- URN
urn:pkr-prod:CUT2c0a4b7065ab4502a0451c2dec4a878e
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.