The Research And Design Of Hydraulic Generator Vibration Monitoring System

With the development of Hydropower, lots of hydraulic generators have been put into practice. Vibration is one of the main factors that influence running security and life-span of generators. So vibration on-line monitoring is very important for generator fault diagnosis.A complete on-line monitoring system includes many aspects. Signal data collection and signal processing are foundmental. They are key parts in an on-line monitoring system. Traditional fault monitoring system uses simple MCU as its main controller. Its monitoring nodes are less and its real time performance is worse. Vibration monitoring system using microcomputer as the main controller cost a lot. Considering this, this paper puts forward a hydraulic generators vibration on-line monitoring system based on can bus. This paper uses digital signal processor TMS320F2812 as the main controller of on-line monitoring system. This system uses its built-in high speed analog to digital converter module to sample local data and also uses its built-in can module to form can bus network. It has many advances such as high real time performance, fast communication speed, low coat and so on.This paper designs and develops a hydraulic generator Vibration Monitoring System. Firstly it decribes the importance of hydraulic generators on-line monitoring and introduces the general situation of vibration on-line monitoring theory. After that it puts forwards the main contents of this paper. Secondly it analyses the characteristic and the cause of vibration from hydraulic generators. Then it introduces key technique which vibration on-line monitoring needs and gives the whole structure of hydraulic generator Vibration Monitoring System. Thirdly, this paper decribes main functions of this system and analyses transportation capability of can bus. And it also analyses the real-time performance. Lastly this paper introduce the hardware design and the soft design in details.