Modelling of large-sized electrolysers for realtime simulation and study of the possibility of frequency support by electrolysers
B. W. Tuinema (TU Delft - Intelligent Electrical Power Grids)
M. Ebrahim Adabi (TU Delft - Intelligent Electrical Power Grids)
Patrick K.S. Ayivor (TenneT TSO B.V.)
V. Garcia Suarez (DNV GL)
Lian Liu (TU Delft - Intelligent Electrical Power Grids)
A.D. Perilla Guerra (TU Delft - Intelligent Electrical Power Grids)
Zameer Ahmad (TU Delft - Photovoltaic Materials and Devices)
Jose Luis Rueda Rueda (TU Delft - Intelligent Electrical Power Grids)
M. A.M.M. van der Meijden (TenneT TSO B.V., TU Delft - Intelligent Electrical Power Grids)
Peter Palensky (TU Delft - Intelligent Electrical Power Grids)
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Abstract
Hydrogen as an energy carrier holds promising potential for future power systems. An excess of electrical power from renewables can be stored as hydrogen, which can be used at a later moment by industries, households or the transportation system. The stability of the power system could also benefit from electrolysers as these have the potential to participate in frequency and voltage support. Although some electrical models of small electrolysers exist, practical models of large electrolysers have not been described in literature yet. In this publication, a generic electrolyser model is developed in RSCAD, to be used in real-time simulations on the real-time digital simulator. This model has been validated against field measurements of a 1 MW pilot electrolyser installed in the northern part of The Netherlands. To study the impact of electrolysers on power system stability, various simulations have been performed. These simulations show that electrolysers have a positive effect on frequency stability, as electrolysers are able to respond faster to frequency deviations than conventional generators.