Protection of MVDC grids for the production of green hydrogen

Authors

  • D.M. Larruskain Department of Electrical Engineering, Faculty of Engineering of Bilbao, Universidad del País Vasco UPV/EHU Alameda Urquijo s/n, 48013 Bilbao (Spain) Phone/Fax number: +0034 946 014970 Author
  • P. Eguia Department of Electrical Engineering, Faculty of Engineering of Bilbao, Universidad del País Vasco UPV/EHU Alameda Urquijo s/n, 48013 Bilbao (Spain) Phone/Fax number: +0034 946 014970 Author
  • E. Torres Department of Electrical Engineering, Faculty of Engineering of Bilbao, Universidad del País Vasco UPV/EHU Alameda Urquijo s/n, 48013 Bilbao (Spain) Phone/Fax number: +0034 946 014970 Author
  • V. Valverde Department of Electrical Engineering, Faculty of Engineering of Bilbao, Universidad del País Vasco UPV/EHU Alameda Urquijo s/n, 48013 Bilbao (Spain) Phone/Fax number: +0034 946 014970 Author
  • A. Blazquez Department of Electrical Engineering, Faculty of Engineering of Bilbao, Universidad del País Vasco UPV/EHU Alameda Urquijo s/n, 48013 Bilbao (Spain) Phone/Fax number: +0034 946 014970 Author

DOI:

https://doi.org/10.24084/repqj21.260

Keywords:

Direct Current, Electrolyzer, Hydrogen, Grid, Protection

Abstract

Green hydrogen production from renewable energy sources has a big potential to reduce energy dependence on fossil fuel, contributing to the global goal set by the international community of net zero emissions by 2050. Electrolyzers are connected to grid with power stages that can be designed as active devices with high control capability and a remarkably fast operation. Nevertheless, in the present, they must overcome some challenges in order to ensure a reliable operation. This paper addresses the concept of protection of DC grids with electrolyzers fed from renewable energy sources. The topologies of the grid are discussed as well as protection features and fault clearing strategies. A new dynamic model for multi megawatt PEM electrolyzer is introduced. Finally, a case study with a PEM electrolyzer in a MVDC system is included.

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Published

2024-01-03

Issue

Vol. 21 No. 2 (2023)

Section

Articles