Modelling an electrolyser in a graph-based framework

Abstract

We propose an electrolyser model for steady-state load flow analysis of multi-carrier energy networks, where the electrolyser is capable of producing hydrogen gas and heat. We show that there are boundary conditions that lead to a well-posed problem. We derive these conditions for two cases, namely with a fixed and non-fixed ratio between gas and heat output. Furthermore, the derived conditions are validated numerically.