Short-Term Scheduling of Integrated Electric-Hydrogen-Thermal Systems Considering Hydroelectric Power Plant Peaking for Hydrogen Vessel Navigation

Abstract

Transporting hydrogen by vessels may be more cost-effective than hydrogen trailers and hydrogen tankers, but it is also more sensitive to environmental factors (e.g., river levels). In order to capitalize on the advantages of based-vessel waterway hydrogen chains, a new short-term scheduling strategy of integrated electric-hydrogen-Thermal systems considering the hydroelectric power plant peaking for hydrogen vessel (HV) navigation is proposed in this paper. First, a temporal-spatial operational model of waterway hydrogen chains is developed. In this model, the relationship between the electrolysis temperature, hydrogen production efficiency, and maximum available operational power of the reversible solid oxide fuel cell (RSOC) is modelled. The impact of the hydroelectric power plant underflow on HV transfer is also evaluated. On this basis, a flexible multi-day collaborative scheduling strategy of the electric-hydrogen integrated system is designed, where the main power source, i.e., thermoelectric plant (TEP), is allowed to operate in pure power generation mode or cogeneration mode to release the operation flexibility. This scheduling model is first linearized as a mixed-integer second-order conic programming (MISOCP) problem and then solved efficiently through a two-layer method. Finally, case studies on a modified IEEE 118-node power system verify the effectiveness of the proposed strategy.