|
|
Fault diagnose system of governor hydraulic servo system |
Fan Mingshu, Guo Jiang, Zhang Kefei, Yuan Fang, Zeng Hongtao |
School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei 430072, China |
|
|
Abstract The normal operation of the governor hydraulic servo system has great influences on the operating characteristics and economic performance indicators of the whole hydro unit. In the practical situations that only basic online-monitoring and fault diagnose are achieved in present governing system, based on the analysis of the physical structure, the operating principle and fault mechanism of the hydraulic servo was studied using the improved fault mode effects and critical analysis(FMECA)which is used for the clarity of the function, fault mode, fault reason and fault effect of the equipment to qualitative analysis, and the distributed physical grid model of the hydraulic servo was established. According to the characteristic indexes obtained by the simulation model, a fault diagnose method was proposed. Simulation analysis taken from the jam faults of hydrovalve in the starting up procedure was given, and based on the different output of the frequency, guide vane opening, electro-hydraulic converter and PID, the corresponding fault was estimated. From the case analysis, this method is proved to be simple, reliable and accurate,and the fault in the system can be allocated which provides the decision basis for the operating of high efficiency and daily maintenance.
|
Received: 04 November 2013
|
|
|
|
[1]Shafieea M, Chukovab S. Maintenance models in wa-rranty: A literature review [J]. European Journal of Operational Research, 2013, 229(3): 561-572.[2]Song Guangxiong, He Yongyong, Chu Fulei. HYDES: A web-based hydro turbine fault diagnosis system [J]. Expert Systems with Applications, 2008, 34(1): 764-772.[3]肖志怀,许湘莲,郭江,等.基于多层次信息融合的水轮机调速器故障诊断[J].武汉大学学报:工学版, 2007, 40(4): 100-104. Xiao Zhihuai, Xu Xianglian, Guo Jiang, et al. Application of sort sensor and FMECA to fault diagnosis of hydro turbine governor [J]. Engineering Journal of Wuhan University, 2007, 40(4): 100-104.(in Chinese)[4]Kishor N, Saini R P, Singh S P. A review on hydro-power plant models and control [J]. Renewable & Sustainable Energy Reviews, 2007, 11(5): 776-796.[5]周叶,潘罗平,唐澍,等.对水电机组状态检修技术推行困境的思考[J].水电厂自动化, 2013,34(4): 19-23. Zhou Ye, Pan Luoping, Tang Shu, et al. Consideration on measurement technique promotion of hydro governor[J].Hydropower Plant Automation, 2013, 34(4): 19-23.(in Chinese)[6]王国彪,何正嘉,陈雪峰,等.机械故障诊断基础研究“何去何从”[J].机械工程学报, 2013, 49(1): 63-72. Wang Guobiao, He Zhengjia, Chen Xuefeng, et al. Basic research on machinery fault diagnosis—What is the prescription [J]. Journal of Mechanical Enginee-ring, 2013, 49(1):63-72.(in Chinese)[7]黄万全.水轮机调速器液压随动系统的比较分析[J]. 青海电力, 2003(增刊): 18-19. Huang Wanquan. Compare analysis of hydraulic turbine governor′s hydraulic pressure moving system[J]. Qinghai Electric Power, 2003(S1): 18-19.(in Chinese)[8]Liu Huchen, Liu Long, Liu Nan. Risk evaluation app-roaches in failure mode and effects analysis: A literature review [J]. Expert Systems with Applications, 2013, 40(2): 828-838.[9]李浩,邱超凡.模糊FMECA方法在液压系统可靠性分析中的应用[J].液压气动与密封,2012(1):38-42. Li Hao, Qiu Chaofan. Application of fuzzy FMECA in analysis of hydraulic system reliability [J]. Hydraulics Pneumatics & Seals, 2012(1): 38-42.(in Chinese)[10]Lee Y S, Kim D J, Kim J O. New FMECA methodology using structural importance and fuzzy theory [J].IEEE Transactions on Power Systems, 2011,26(4):2364-2370.[11]Gawthrop P, Scavarda S. Special issue on bond graphs [J].Journal of Systems and Control Engineering, 2002, 216(1): 1-5.[12]陈燚涛. 水轮机调速系统优化维护理论与实践[D].武汉:华中科技大学自动化学院, 2005.[13]赵建钢,李朝晖.闸门液压系统分布式物理图网建模及仿真研究[J].系统仿真学报,2002,14(6):695-697. Zhao Jiangang, Li Zhaohui. Modeling and simulation of hydraulic system of water gate using the distributed physical net modeling approach[J]. Journal of System Simulation, 2002, 14(6): 695-697.(in Chinese)[14]王科社,马驰,孙江宏.基于Matlab/Simulink的液压挖掘机液压系统仿真分析[J].北京信息科技大学学报,2012,27(1):27-30. Wang Keshe, Ma Chi, Sun Jianghong. Simulation ana-lysis of excavator hydraulic system based on Matlab/Simulink [J]. Journal of Beijing Information Science & Technology University, 2012, 27(1): 27-30.(in Chinese)[15]Li Wei, Vanfretti L, Chompoobutrgool Y. Development and implementation of hydro turbine and governor mo-dels in a free and open source software package [J]. Simulation Modelling Practice and Theory, 2012(24): 84-102. |
|
|
|