Hydropower Solutions, a ProTRAX Engineering Study
Big Creek Hydro Chain
Brent Buffington of Southern California Edison (SCE) and Kyle Greene of TRAX Energy Solutions jointly presented “Building Hydroelectric Control Systems to Increase Operational Flexibility in High and Low Inflow Scenarios” at the CEATI Hydropower Conference in Palm Springs, CA. The presentation highlighted the background of the major SCE/TRAX venture in hydro controls: the Big Creek Hydroelectric Project.
TRAX upgraded the controls for the Big Creek Hydroelectric Project in response to SCE’s increased need for flexibility in the CAISO market due to the significant increase in variable renewables. Some of the project goals included minimizing the mileage to achieve MW setpoints, increasing the achievable Big Creek ramp rate, minimizing transitions through rough loading zones, and expanding the real-time visibility with a custom TRAX HMI. The result of the project gave SCE much greater flexibility to respond to the CAISO demand while reducing future maintenance costs.
OPERATIONAL IMPROVEMENTS
MARKET IMPROVEMENTS
VISIBLE CHANGE ‒ SCE reported immediate improvement after implementing the TRAX controls updates
Source:https://www.sce.com/about-us/community/camp-edison/big-creek
TRAX has delivered a carbon capture simulator for a 150 MW coal-fired unit that models the capture of the full flue gas stream. The system provides both CO2 and SO2 capture, delivering the captured CO2 to a pipeline for industrial use and underground storage.
—CO2 and SO2 capture
—Sulfuric acid plant
—CO2 and SO2 amines filtration and purification
—CO2 compression
—CO2 pipeline and cavern
As shown below, TRAX built a modular simulation replicating the plant layout using our software, ProTRAX. ProTRAX contains a full suite of modules specific to carbon capture functions and can model a wide variety of processes. TRAX also virtually replicated the user interface that appears in the plant.
Upon initial delivery, the TRAX simulator was used to debug control logic and processes prior to site installation and to provide operations training prior to plant startup. There was a clear need to begin training operators as early as possible since they had multiple unfamiliar systems to learn.
Thanks to the ProTRAX simulator, our customer gained considerable insight into control functionality and system interactions, resulting in modification to some control logic and correction of simple errors. TRAX was able to assist with controls tuning, and helped in development of initial plant Operating Procedures.
The latest upgrade brings the model into alignment with the as-built plant condition by updating and tuning the simulator models to match the current plant dynamics. In addition, TRAX has updated the simulator controls and HMI graphics to the as-built state. Keeping the simulator aligned with the current plant condition is critical to maintaining a positive training value, and is of paramount importance to the customer.