Method for operating a gas turbine group
AssigneeALSTOM Technology Ltd
InventorsCarlos Diaz, Jurgen Hoffmann, Andreas Ullrich
Life of this patent
Estimating the term…
Abstract
A gas turbine group comprises a device, arranged in a suction-intake duct, for cooling a suction-intake airflow. The device is, for example, a device for injecting a liquid mass flow. The cooling device is activated automatically when a first limit temperature of the ambient air is overshot and is deactivated automatically when a second limit temperature is undershot. Stability of the automatic algorithm can be improved in that the second limit temperature can lie by a specific amount below the first limit temperature. In one embodiment, the limit temperatures are predetermined as a function of the position of an adjustable initial guide blade cascade.
Claims19
A method for operating a gas turbine group, comprising:
- measuring a temperature of ambient air (TAMB) and/or a temperature in an inflow duct of the gas turbine group to provide a temperature measurement value, upstream of a compressor of the gas turbine group, and
- automatically activating means, arranged upstream of the compressor of the gas turbine group, for cooling the supply airflow of the compressor when a first limit temperature for this measurement value is overshot, wherein the means for cooling are activated for a partially closed position of an adjustable initial guide blade cascade.
Dependencies are inferred from the claim text.