Title :
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
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;
Conference_Titel :
Power Electronics and Intelligent Transportation System (PEITS), 2009 2nd International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4244-4544-8
DOI :
10.1109/PEITS.2009.5407005
