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

Claim 6:
7. A power plant operable to provide primary frequency control for a grid, the power plant comprising:
a gas turbine operable to power a first generator that is synchronized to the power grid and to produce an exhaust gas, the gas turbine operated at a power level that defines a non-zero first MW margin and including a first control system having a first droop setting;
a heat recovery steam generator (HRSG) operable to generate high pressure steam in response to the passage of the exhaust gas through the HRSG;
a steam turbine operable to power a second generator that is synchronized to the power grid, the steam turbine operated at a power level that defines a non-zero second MW margin and including a second control system having a second droop setting, the second droop setting set to a value based at least in part on the second MW margin, wherein the first control system calculates the first droop setting based at least in part on the first MW margin, the second droop setting, the second MW margin, and a regional required total droop for the combination of the gas turbine and the steam turbine.