Simulation models for supporting the solar thermal power plant operator

Highlights: • STPP performance model could be used to maximize power production and profit. • IGV angle and fuel mass flow selection to maximize profit for an operation type. • STPP performance model could be used for components health assessment. • STPP performance model could be used for optimum restoration time. -- Abstract: The benefits that may accrue for the operators of Solar Thermal Power Plants by integrating simulators to everyday operation and maintenance management is demonstrated by using a simulation environment allowing steady state and transient modelling. Two representative STPPs are used as test cases, namely a hybrid solar gas turbine plant and a solar steam turbine plant. The plants operation is simulated for different operating modes utilizing annual meteorological data. Component faults that may occur during operation, such as mirror soiling and misalignment are studied. The effects of different operating modes on performance and operability are established and evaluated. The effect of components degradation on performance is assessed, the overall plant performance deterioration is quantified, and the possibility for selecting optimal maintenance planning is discussed.