Multi-state load model for multiple hydrogen electrolysers operation in the power grid

This paper presents multiple hydrogen electrolysers integrations in the power grid and their operational strategies for better performance. Electrolysers have been considered as electrical loads and multi-state load model for the operation of an electrolysers have been proposed. Strategy for the operation of multiple electrolysers at different positions in a grid are formulated and Multi-State Round Robin strategy is proposed. The proposed strategy is validated by implementing that to a coastal power grid and to meet the hydrogen energy demand of vessels at the ports. Simulation has been conducted modeling the grid and electrolysers in DIgSILENT Power factory. A comparison has been performed between two state load model and multi state load model considering Multi-State Round Robin operational strategy. Line loading and hydrogen production are the considered performance indicators. The results show that the proposed model and strategy improves the hydrogen production and operational flexibility of the system. • Multi State load model is defined and proposed for electrolysers. • Multi-State Round Robin Strategy is proposed for multiple electrolysers operation. • Proposed strategy is implemented for electrolysers connected in a power grid. • Proposed strategy increases hydrogen production maintaining network constraints.