An online monitoring system of friction fault based on acoustic emission technology

Author

Li, Yanqiu ; Cheng, Weiliang

Author_Institution

Key Lab. of Condition Monitoring & Control for Power Plant Equip. of Minist. of Educ., North China Electr. Power Univ., Beijing, China

Volume

1

fYear

2009

fDate

19-20 Dec. 2009

Firstpage

329

Lastpage

332

Abstract

Vibration signals are usually used to monitor friction fault between stator and rotor of steam turbine in fossil-fuel power plant indirectly, and the effect is not ideal due to the limitation of vibration meter and heavy mass of rotor. The reason why vibration signals can not monitor friction fault between stator and rotor of steam turbine is analyzed in this paper in theory. A method of monitoring friction fault between stator and rotor of steam turbine based on acoustic emission (AE) technology is supposed. An online monitoring system of friction fault for steam turbine is designed. It is shown that the monitoring system can measure friction fault between stator and rotor of steam turbine effectively and accurately and improve the reliability of steam turbine.

Keywords

acoustic emission; combined cycle power stations; power generation faults; acoustic emission technology; fossil-fuel power plant; friction fault; online monitoring system; rotor; stator; steam turbine; vibration meter; vibration signals; Acoustic emission; Blades; Condition monitoring; Equations; Friction; Power generation; Signal analysis; Stators; Turbines; Vibrations; acoustic emission; friction; monitoring; steam turbine;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Intelligent Transportation System (PEITS), 2009 2nd International Conference on

Conference_Location

Shenzhen

Print_ISBN

978-1-4244-4544-8

Type

conf

DOI

10.1109/PEITS.2009.5407005

Filename

5407005