Authors: AD. Hino
Year: 2024
Industry: SCO2
Keywords: Use FSE, Transient, Dynamic, Validation, Verification
ABSTRACT
The STEP dynamic simulation model has been developed by GTI Energy utilizing Flownex Simulation Environment (Flownex SE) to model the 10 MWe sCO2 Brayton test facility in San Antonio, Texas. Flownex SE is an object-oriented simulation environment developed in the late 1980’s that is ISO 9001:2008 and NQA1 compliant and has been verified in the nuclear industry. GTI Energy has generated models for both the Simple Brayton Cycle (Simple Cycle) and Recompression Brayton Cycle (RCBC) configurations that will be tested in the facility. The primary purpose of the model is to provide simulation results which would help in the operational analysis of the test program. Transient simulations that have been completed include startup, shutdown, load level changes, trips, etc. Control loop algorithms have been incorporated in the model to help determine adequate control methodologies for the test facility. Additionally, the dynamic model has been incorporated into a plant Simulator that operators can use to train on. With the completion of commissioning of all major components required for Simple Cycle operation, and the Simple Cycle test series successfully performed, this paper will discuss the verification process of the model components utilizing commissioning data, how the Simulator was developed, and the validation of the Simple Cycle model using test data.