Method and system for testing an overspeed protection system of a powerplant machine

摘要

Embodiments of the present invention have the technical effect of automatically testing an overspeed protection system of a powerplant machine comprising at least one shaft. An embodiment of the present invention may automatically test the overspeed protection system while the powerplant machine is decelerating from full-speed-no-load (FSNL). Another embodiment of the present invention may automatically test the overspeed protection system of the powerplant machine while the powerplant machine is accelerating to FSNL.

主权项

1. A method of testing an overspeed protection system of a powerplant, the method comprising:
providing a powerplant comprising a powerplant machine, a shaft, and an operational control system, wherein the operational control system is configured for operating the powerplant machine and comprises an overspeed protection system configured for detecting an overspeed event associated with the shaft; determining whether the speed of the shaft is within a testing range; changing an overspeed trip value to a value within the testing range; and determining whether the overspeed protection system would operate to trip the powerplant machine; wherein the method reduces the possibility of a trip occurring during testing of the overspeed protection system.