摘要
由于TBB-800-2EY3型汽轮发电机定子端部绕组支撑结构等的设计存在严重弊病,导致运行中数次发生线棒磨损、漏水故障。按原结构修复投运后再次发生类似故障。为根除上述弊病,采用当代汽轮发电机设计、制造新技术,改造800 MW大容量汽轮发电机定子端部绕组的支撑结构、定子绕组、定子压圈及屏蔽结构。发电机改造后,定子端部绕组的振动值、定子绕组的附加铜损耗和基本铜损耗以及压圈的损耗与温升均大幅度降低,发电机的效率和运行可靠性均有提高。
Serious drawbacks exist in the design of stator winding support structure of TBB-800-2EY3 turbo-generator, resulting in several occurrences of fauhs, such as stator bar insulation wear-out and cooling water leakage during operation. After repaired in its original struchure and nesumed operation, similar faults occun＇ed 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 slrnctlJre including slator winding, stator end plates and its screen struetm~. After the modification, the vibration magnitude of stator end winding, the additional copper loss, the total de loss and end plates loss were considerably diminished. The temperature rise. of these parts was appreciahly reduced also. The operational efficiency and reliability were improved as well.
出处
《中国电力》
CSCD
北大核心
2014年第5期97-101,共5页
Electric Power
关键词
汽轮发电机
定子绕组
定子端部绕组支撑结构
振动
模态
损耗
温升
turbo-generator
stator winding
stator end winding support structure
vibration
mode
losses
temperature rise
