The interaction between the INGRID simulator and the Energy management System by TECNALIA

Description:  The INGRID project aims to exploit, on a large industrial real scale, a solid state hydrogen based energy storage technology, storing the excess of electricity in the form of hydrogen. The hydrogen, generated by electrolysis of water, is stored by absorption in Magnesium hydride disks, to be used for industrial purposed (open loop) or to generate electricity (close loop) when required.

The INGRID Energy Management System (EMS) decides when the hydrogen is generated, absorbed and desorbed to generate electricity according to different objective functions. However, before connecting the EMS to a real INGRID plant, a validation and tuning process has to be followed by the use of the INGRID Simulator. It simulates a real plant generating providing the state evolution of the plant components according on initial and boundary conditions. The former establish the initial state of the INGRID plant in time cero. The latter represent the external conditions that affect the proper operation to the plant such as the energy price, RES generation foreseen, 24 hydrogen and electric vehicle (EV) recharging demand, or the DSO energy absorption capacity.

The architecture of the INGRID simulator and its communication with the EMS is depicted in the following figure.

The main components of the INDGRID simulator are the water electrolyzer (WE), the hydrogen solid storage system (HSS) and the fuel cell module that generates the electricity (FC). They generate the evolution of the main process variables: the hydrogen level and the fuel cell hydrogen demand. Besides, other components of the simulators generate the boundary conditions:

  • The RES Simulator generates the excess of electricity considering wind turbines, solar panels and other energy sources. 
  • The Intelligent Dispatcher (ID) generates the energy demand for Electric Vehicle recharging according to different vehicle arrival and departure models. 
  • The Hydrogen module (H2 sale) generates the hydrogen demand and price profile and the 24 hour energy price.

Both data, process variables and boundary conditions, are sent periodically to the EMS that, through a TCP/IP real time bidirectional communication between the EMS and the INGRID Simulator.

INGRID - High-capacity hydrogen-based green-energy storage solutions for grid balancing
Work partially supported by European Community under the ENERGY programme of the 7th FP for RTD - project INGRID, contract 296012. The Author is solely responsible for the content of this paper. It does not represent the opinion of the European Community, and the European Community is not responsible for any use that might be made of data appearing therein.

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