This paper presents an on-line failure diagnostic method for steam turbine hydraulic governing system. This method uses the estimated values of friction on sliding valves to calculuate the corresponding dead band. Und...This paper presents an on-line failure diagnostic method for steam turbine hydraulic governing system. This method uses the estimated values of friction on sliding valves to calculuate the corresponding dead band. Under load rejection, the steam turbine's additional overspeed caused by these dead bands are studied through computer simulation. This on-line detection of dead bands can realize the failure detection of blockage fault of sliding valves.展开更多
文摘This paper presents an on-line failure diagnostic method for steam turbine hydraulic governing system. This method uses the estimated values of friction on sliding valves to calculuate the corresponding dead band. Under load rejection, the steam turbine's additional overspeed caused by these dead bands are studied through computer simulation. This on-line detection of dead bands can realize the failure detection of blockage fault of sliding valves.