Turbine speed and acceleration limiter

Abstract

Method for controlling steam admission into a steam turbine, the turbine comprising a high pressure casing, at least one reduced pressure casing and an admission steam control system, the high pressure casing and at least one reduced pressure casing comprising control valves for steam admission. The steam admission control system manages the following steps: determining at least one of the speed and the acceleration of the turbine; comparing the determined speed and/or acceleration respectively with a predefined speed threshold value and a predefined acceleration threshold value; when the determined speed and/or acceleration are superior to the predefined threshold value, the control system activates a speed and acceleration limiter.

Dependencies are inferred from the claim text.