Integration of reversible solid oxide cells with methane synthesis (ReSOC-MS) in grid stabilization: A dynamic investigation

Bin Chen, Yashar S. Hajimolana, Vikrant Venkataraman, Meng Ni, P. V. Aravind

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

The power to gas concept is promising for the next generation of electrochemical energy storage and grid stabilization technologies. The fuel produced from electricity-driven fuel production can be an efficient energy carrier for excessive grid power. Here, a reversible solid oxide cell(s) system integrated with methane synthesis (ReSOC-MS) is proposed for the grid stabilization application at Mega Watts class. CH 4 can be synthesized at grid surplus conditions and can be a transportation friendly energy carrier. A control strategy is proposed for this combined system, based on the grid state and H 2 tank state of the system for the normal solid oxide fuel cell (SOFC) mode and solid oxide electrolysis cell (SOEC) mode. Simulation results of these two operational modes demonstrate that the ReSOC-MS can achieve 85.34% power to gas efficiency in SOEC mode and 46.95% gas to power efficiency in SOFC mode. Dynamic simulations of stepping grid state for 5000 s operation show that the power to gas efficiency can be higher than 70%, thereby successfully demonstrating the capability of grid-balancing and methane production.

Original languageEnglish
Pages (from-to)558-567
JournalApplied Energy
Volume250
DOIs
Publication statusPublished - 2019

Keywords

  • Dynamic simulation
  • Grid stabilization
  • Hydrogen storage
  • Methane synthesis
  • Power control strategy
  • Power-to-X
  • Reversible solid oxide cell

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