(371q) Modeling and Advanced Process Control of Supercritical Carbon Dioxide (sCO2)-Based Energy System
AIChE Annual Meeting
2019 AIChE Annual Meeting
Computing and Systems Technology Division
Interactive Session: Systems and Process Control
Tuesday, November 12, 2019 - 3:30pm to 5:00pm
In this study, a rigorous steady-state off-design model in Aspen Plus is updated and exported to Aspen Plus Dynamics to study the dynamic performance under disturbances in the form of periodic step changes in inputs. For the control study, a multi-input-multi-output system from the sCO2 RCBC is selected. The control objective is load setpoint tracking by manipulating inventory (system mass), turbine inlet temperature control by manipulating the primary heater input, and main compressor inlet temperature control by manipulating water flow to the main cooler. System identification techniques are used to derive simplified dynamic models for testing MPC, BIO-CS , and agent-based control strategies . In addition, open-loop dynamic studies are performed to evaluate operability and further assist the application of controllers on the system. The results will demonstrate the potential of such control strategies to tackle multiple challenges, including the nonlinearities of the advanced energy system.
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