Simulation model of radial vibration for a large hydro-turbine generator unit and its application

Author

Xu, Yong ; Li, Zhaohui ; Lai, Xide

Author_Institution

Sch. of Hydropower & Inf. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

3

fYear

2011

fDate

8-9 Sept. 2011

Firstpage

191

Lastpage

195

Abstract

Simulating to predict the dynamic response of large hydro-turbine generator units (hydro-units) is of great significance. In this paper, a rotordynamic model of radial vibration is presented, which takes into account guide bearing, thrust bearing, unbalanced magnetic pull, hydraulic force and unbalanced force. The brief and practical database method is employed to model the guide bearing. Taking advantage of the method, operating conditions can be considered in the simulation model. A novel algorithm, which can take account of both transient and steady-state analysis, is proposed to solve the model. Dynamic response for 125 MW hydro-units in Gezhouba Power Station is simulated. Compared with the simulation results, monitoring data from Optimal Maintenance System for Hydro power plants (HOMS) are analyzed.

Keywords

database management systems; hydroelectric power stations; maintenance engineering; power engineering computing; Gezhouba power station; database method; guide bearing; hydraulic force; hydro power plants; hydroturbine generator unit; optimal maintenance system; power 125 MW; radial vibration; rotordynamic model; simulation model; thrust bearing; unbalanced force; unbalanced magnetic pull; Dynamics; Force; Mathematical model; Rotors; Shafts; Simulation; Vibrations; Hydro-turbine Generator Unit; radial vibration; shaft system; simulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering and Automation Conference (PEAM), 2011 IEEE

Conference_Location

Wuhan

Print_ISBN

978-1-4244-9691-4

Type

conf

DOI

10.1109/PEAM.2011.6135043

Filename

6135043