Reformation of Stator Winding and its End Support Structure of TBB-800-2EY3 Turbo-Generator

doi:10.11930/j.issn.1004-9649.2014.5.97.4

Abstract

Abstract: Serious drawbacks exist in the design of stator winding support structure of TBB-800-2EY3 turbo-generator, resulting in several occurrences of faults, such as stator bar insulation wear-out and cooling water leakage during operation. After repaired in its original structure and resumed operation, similar faults occurred in the machine again. In order to eradicate the drawbacks mentioned above, this new techniques of design and manufacture for modern turbo-generators are introduced, which rebuilds the whole stator winding end support structure including stator winding, stator end plates and its screen structure. After the modification, the vibration magnitude of stator end winding, the additional copper loss, the total dc I²r loss and end plates loss were considerably diminished. The temperature rise of these parts was appreciably reduced also. The operational efficiency and reliability were improved as well.

Key words: turbo-generator, stator winding, stator end winding support structure, vibration, mode, losses, temperature rise

CLC Number:

TM311

SUN Shu-wen, WANG Shao-yu, HAN Chang-li, SONG Yu-ke, SHI Xiang-dong. Reformation of Stator Winding and its End Support Structure of TBB-800-2EY3 Turbo-Generator[J]. Electric Power, 2014, 47(5): 97-101.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.5.97.4

https://www.electricpower.com.cn/EN/Y2014/V47/I5/97

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