SUPPLEMENTAL WORKING FLUID HEATING TO ACCOMMODATE VARIATIONS IN SOLAR POWER CONTRIBUTIONS IN A CONCENTRATED SOLAR-POWER ENABLED POWER PLANT

摘要

Controlling a solar-fossil-fuel hybrid power plant to provide supplemental heat includes receiving concentrated solar power thermal energy from a concentrated solar power (CSP) field for use in a heat recovery steam generator (HRSG) that uses waste heat thermal energy from waste heat produced by a gas combustion process and the concentrated solar power thermal energy to produce steam to drive a steam generator. Supplemental fossil fuel generated heat is added to the (HRSG) such that the temperature of steam produced by the (HRSG) is maintained within an inlet operating tolerance of the steam generator when the concentrated solar power thermal energy contribution to the (HRSG) falls below a predetermined threshold.