Abstract
This paper presents a comprehensive techno-economic analysis of different energy storage systems (ESSs) in providing low-voltage ride-through (LVRT) support for power electronics-based electrolyzer systems. A framework for analyzing the performance of a grid-integrated electrolyzer-ESS system is developed, taking into account realistic scenarios and accurate models. The system components consist of a 500 kW alkaline electrolyzer module integrated with a medium-voltage grid and three different commercially available ESSs based on Li-ion battery, Li-ion capacitor, and supercapacitor technology, respectively. The performance of these ESSs is extensively studied for three LVRT profiles, with a primary focus on the upcoming Danish grid code. In order to perform simulation studies, the system is implemented on the MATLAB®/Simulink®-PLECS® platform. The results demonstrate that all three energy storage technologies are capable of supporting the electrolyzer systems during low-voltage abnormalities in the distribution grid. The study also reveals that the supercapacitor-based technology seems to be more appropriate, from a techno-economic perspective, for fault ride-through (FRT) compliance.
| Original language | English |
|---|---|
| Article number | 527 |
| Journal | Batteries |
| Volume | 9 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 2023 |
| MoE publication type | A1 Journal article-refereed |
Funding
This research is part of the SENSE—Sustainable Energy Systems project—which is supported by the Energy Technology Development and Demonstration Program (EUDP), Denmark, under grant number 64019-00114.
Keywords
- LVRT
- electrolyzer
- energy storage
- green hydrogen
- grid code compliance
- power-to-X
