Optimal dispatch of electricity-hydrogen integrated energy system based on mobile energy storage and hydrogen trailer

An electricity-hydrogen integrated energy system effectively relieves the dispatch pressure on distribution networks with a high penetration of renewable energy sources, but simultaneously places higher demands on flexible dispatch and fast transportation of multiple energy forms, including electricity and hydrogen. Aiming at the problem that existing trailer-based battery energy storage and hydrogen transportation models are often not considered and unified at the same time, this paper proposes a cooperative optimisation method for mobile energy storage and hydrogen trailers based on continuous-time dispatching. Firstly, a graph-theory-based model is developed to represent both the transportation and distribution networks; secondly, the models for mobile energy storage and hydrogen trailers are formulated using the electric vehicle routing problem with time windows, and the coupling between the transportation and distribution networks is achieved through dispatching plan feasibility constraints and scheduling time equivalent discretisation constraints; finally, an objective fun ction including voltage deviation costs, voltage violation penalties, curtailment penalties and logistics costs is constructed, and the validity of the proposed model is verified by the simulation calculations.