Dynamic Modeling and Simulation of Pumped Thermal Energy Storage

Team: Kaeden Teague and Dr. Hailei Wang

Background

  • PTES provides grid-scale, long-duration energy storage
  • Energy storage is necessary due to the variability in solar and wind power
Annual electricity from wind and solar %

Objectives

  • Model realistic operation with ramp-up and shutdown processes
  • Demonstrate load following capabilities with inventory control
  • Investigate the effects of partial load operation
    • Round-trip efficiency
    • Stability of state points

Storing Heat Energy

Storing Heat Energy

Producing Electricity

Producing Electricity

Methods

  • Developing a dynamic model and system controller in Simulink (using the Simscape library)
  • Wind power generation and power demand datasets are inputs to the controller
diagram 1
diagram 2

References

[1] Raade, J., “Seasonal Energy Storage: A Technical and Economic Framework,” United States Energy Association, 2022.

[2] Bollinger, B., “Repowering Coal Plants as Pumped Thermal Energy Storage,” Malta Inc., 2022.