Turbine control system
AssigneeABB Schweiz AG
InventorsCamilo Lopez, Mark Foltz, Steve Miller
Life of this patent
Estimating the term…
Abstract
A turbine control system is provided for decreasing the response time between readings of the speed of the turbine and changing a valve position in response thereto. The speed control system includes a speed probe that detects the speed of the turbine and a turbine valve that controls the flow of fluid or gas from or to the turbine. A controller receives a speed signal from the speed probe and sends valve position commands to the turbine valve. The controller also sends support functions to the turbine valve. The controller sends the valve position commands at a faster rate than the support functions.
Claims20
A turbine control system, comprising:
- a speed probe detecting a speed of a turbine;
- a turbine valve controlling a flow of a fluid or a gas to or from the turbine;
- a controller in communication with the speed probe and the turbine valve, the controller receiving a speed signal from the speed probe, and the controller sending a first signal and a second signal to the turbine valve, the first signal comprising a valve position command to change a position of the turbine valve in response to the speed signal and the second signal comprising a support function that does not command a change in position of the turbine valve in response to the speed signal,
- wherein the controller outputs the first signal at a faster rate than the second signal.
Dependencies are inferred from the claim text.