Diagnosis and Treatment of the Shaft Vibration Problem for an Ultra Super-critical 700MW Unit

2018 2nd International Workshop on Renewable Energy and Development

能源学;经济学

Yan, Tao^1 ; Wan, Zhonghai^1 ; Chen, Wen^1 ; Cai, Wen^1 ; Hong-Yan, Yang^2

Jiang Xi Electric Power Science and Research Institute of National Grid, Jiangxi Province, Nanchang

330096, China^1

Shanghai Pengken Energy Technology Co.LTD, Shanghai

200090, China^2

关键词: Even orders;    Second orders;    Shaft vibrations;    Ultra super critical;    Vibration problem;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/153/4/042034/pdf
DOI  :  10.1088/1755-1315/153/4/042034

来源: IOP

【 摘 要 】

In this article, there existed a second order unbalance on LP1 shaft of a Super-critical 700MW unit. It can be derived from the mathematical model of flexible and symmetrical shaft vibration characteristics that there are two specific balancing methods, symmetrical for handling odd orders and symmetrical reverse for even orders. The symmetrical reverse balancing method is proved to be effective to solve the second order vibration problems.