大型汽轮发电机定子绕组端部振动抑制措施的探索  

Exploration on the vibration suppression measures of the stator winding end structure of large turbogenerator

作　　者：金泱 王新 潘建伟 戴程鹏 王展宏 钱坤 JIN Yang;WANG Xin;PAN Jian-wei;DAI Cheng-peng;WANG Zhan-hong;QIAN Kun(Zhejiang Energy Group R&D,Hangzhou Zhejiang 311121,China;Zhejiang Provincial Key Laboratoryof Energy Conservation&Pollutant Control Technology for Thermal Power Hangzhou Zhejiang 311121,China;Zhejiang Zheneng Taizhou Second Electric Power Generation Co.,Ld.,Taizhou Zhejiang 317109,China)

机构地区：[1]浙江浙能技术研究院有限公司,浙江杭州311121 [2]浙江省火力发电高效节能与污染物控制技术研究重点实验室,浙江杭州311121 [3]浙江浙能台州第二发电有限责任公司,浙江台州317109

出　　处：《能源工程》2020年第6期68-72,共5页Energy Engineering

摘　　要：针对某电厂1号发电机出现绕组端部振动过大情况,为了降低发电机绕组端部振动幅值,通过对该发电机运行状态下出水温度、冷氢温度、负荷等运行参数与端部振动幅值的相关性进行了梳理,制定了相应的调试方案。通过降低定冷水流量,同时提高定冷水进水和冷氢温度,单独提高定冷水进水温度三种方式,观察发电机端部振动幅值的变化情况。试验证明提高定冷水进水温度,提高发电机冷氢温度对发电机端部振动具有一定的抑制作用。Generator in a power plant had the problem of excessive vibration at the end of winding. In order to reduce the amplitude of vibration at the end of the generator windings, in this paper, the correlation between the operating parameters such as stator cooling water temperature, cold hydrogen temperature, load and the vibration amplitude at the end of the generator winding is studied. The corresponding commissioning plan was made through observing the changes in vibration amplitude at the end of the generator winding by reducing the flow of cooling water, increasing the temperature of stator cooling water and cold hydrogen, and only increasing the temperature of stator cooling water separately. The test proved that increasing the temperature of stator cooling water and cold hydrogen have a certain suppression effect on the vibration at the end of the generator windings.

关 键 词：发电机 端部振动 抑制﹔固有频率 温度 

分 类 号：TM311[电气工程—电机]