NDLI: Cavitations Monitoring and Diagnosis of Hydropower Turbine on Line Based on Vibration and Ultrasound Acoustic

Content Provider	IEEE Xplore Digital Library
Author	Su-Yi Liu Shu-Qing Wang
Copyright Year	2007
Description	Author affiliation: Wuhan Univ. of Sci. & Eng., Wuhan (Su-Yi Liu)
Abstract	The cavitations erosion in hydropower turbines is always a restrict factor of their profitability, which leads to the requirements of periodic inspections and repairs. Detection of cavitations in hydropower turbines with adequate and accurate methods has always been the main goal for hydro-generators researchers in order to diminish or even eliminate its damaging consequences. In the present paper, A multiplex approach was introduced for cavitations detection in which vibratory & ultrasonic sensors are employed and mounted at the lower guide gearing in the direction +X and -Y on the draft tube manhole door and on the head cover etc. A case study of cavitations detection in a large Kaplan turbine is performed in order to detect the cavitations occurrence and to quantify its aggressiveness. Such analysis allows identifying the operating conditions associated with a high erosion risk, which may be taken into account for optimizing turbine operation in order to extend inspections and repairs interval.
Starting Page	2976
Ending Page	2981
File Size	538770
Page Count	6
File Format	PDF
ISBN	9781424409723
DOI	10.1109/ICMLC.2007.4370657
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-08-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hydroelectric power generation Hydraulic turbines Ultrasonic imaging Blades Frequency Pollution measurement Condition monitoring Vibration measurement Acoustical engineering Inspection Ultrasound Cavitations Monitoring Diagnosis Vibration
Content Type	Text
Resource Type	Article

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