Volume 54

Lab-field multi-energy platform: electrolyzer, redox flow battery, and lithium-ion battery energy storage system Chunyang Zhao, Xin Jin, Bugra Kayaalp, Chao Liu, Magnus Klintström, Frank Alan Hauer, Shi You, Chresten Træholt

Abstract

The recent transition in the power system brings challenges like load and demand imbalance, intermittent renewable energy recourses, and the risk of lumping load from power-to-X applications. The battery energy storage system (BESS) is a viable solution for short-term and long-term balancing. Combined with the upcoming major load type of the electrolyzer, we propose the lab-field multi-energy system platform for validating a demonstration of a virtual power plant for grid-connection synergies. Based on the field tests, we summarize the characteristics of the redox flow BESS, lithium-ion BESS, and electrolyzer. The response time of these components varies from one second for the redox flow BESS to a few hours for the electrolyzer. As these components have different response times, efficiency, and capacity, our work provides a reference for the hardware performance and lays the foundation for further implementation and optimization.

Keywords power-to-X, all-iron redox flow battery, anion exchange membrane electrolyzer, ancillary service, virtual power plant, grid connection