排灌机械工程学报Issue(6)：505-510,6.DOI:10.3969/j.issn.1674-8530.13.1046
调速器液压随动系统故障诊断系统
Fault diagnose system of governor hydraulic servo system
摘要
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 sys-tem,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 con-verter 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 de-cision basis for the operating of high efficiency and daily maintenance.关键词
液压随动系统/水轮机调速器/分布式物理图网建模/故障诊断/FMECAKey words
hydraulic servo system/hydro turbine governor/distributed physical grid model/fault diagnose/FMECA分类
能源科技引用本文复制引用
范明树,郭江,张珂斐,袁方,曾洪涛..调速器液压随动系统故障诊断系统[J].排灌机械工程学报,2014,(6):505-510,6.基金项目
国家自然科学基金资助项目 （）
