Switchable Fuel Cell Electrolysis System For Grid-Related Purposes Using Real Bus Depot Data

The combination of gas-to-power and power-to-gas plants in a multi-energy system leads to an increase in the resilience of the participating grids and sectors through the resulting combination of electricity and hydrogen as energy carrier. Especially with regard to the electrical energy supply, the fluctuating feed-in of renewable energy generation plants such as wind and photovoltaic plants can be counteracted in this way. This article shows possible applications of a novel switchable fuel cell electrolysis system for grid-related purposes and its potential for stabilizing electrical energy systems. The primary use case of the system investigated herein is an emergency power supply and its main advantages compared to conventional emergency power supplies are i) the ability to be operated with green hydrogen, ii) that the system is nearly maintenance-free due to the permanent operation, and iii) potential for cost reduction for the operator. The technical description and simulative investigation of the application cases peak shaving and power factor correction are presented in this article. By choosing different time intervals in the combined simulation environments of the hydrogen and electrical domains, the overall simulation time is reduced. It is further concluded that the system presented here is very well suited for peak shaving and reactive power compensation.