Patent ID: 11936189
Assignee: SIEMENS ENERGY, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F  Y | IPC F  H

Claim 12:
13. A method of controlling a power plant to regulate grid frequency, the power plant including a gas turbine and a steam turbine, the method comprising:
assigning a frequency regulation requirement to the power plant, the frequency regulation requirement including a total load the plant is required to output to correct for frequency drops in the grid frequency;
operating a plant controller including a first controller that controls the operation of the gas turbine and a second controller that controls the operation of the steam turbine;
setting a steam turbine droop setting using the second controller, the steam turbine droop setting based at least in part on a MW capacity of the steam turbine and a HRSG storage value;
setting a gas turbine droop setting using the first controller, the gas turbine droop setting based at least in part on the steam turbine droop setting and the frequency regulation requirement; and
resetting the steam turbine droop setting and the gas turbine droop setting at least once every ten second.