Collaborative planning and optimization for
electric-thermal-hydrogen-coupled energy systems with portfolio selection of
the complete hydrogen energy chain
Under the global low-carbon target, the uneven spatiotemporal distribution of
renewable energy resources exacerbates the uncertainty and seasonal power
imbalance. Additionally, the issue of an incomplete hydrogen energy chain is
widely overlooked in planning models, which hinders the complete analysis of
the role of hydrogen in energy systems. Therefore, this paper proposes a
high-resolution collaborative planning model for
electricity-thermal-hydrogen-coupled energy systems considering both the
spatiotemporal distribution characteristics of renewable energy resources and
the multi-scale bottom-to-top investment strategy for the complete hydrogen
energy chain. Considering the high-resolution system operation flexibility,
this paper proposes a hydrogen chain-based fast clustering optimization method
that can handle high-dimensional data and multi-time scale operation
characteristics. The model optimizes the geographical distribution and capacity
configuration of the Northeast China energy system in 2050, with hourly
operational characteristics. The planning optimization covered single-energy
devices, multi-energy-coupled conversion devices, and electric-hydrogen
transmission networks. Last but not least, this paper thoroughly examines the
optimal portfolio selection of different hydrogen technologies based on the
differences in cost, flexibility, and efficiency. In the Pareto analysis, the
proposed model reduces CO2 emissions by 60% with a competitive cost. This paper
provides a zero-carbon pathway for multi-energy systems with a cost 4% less
than the social cost of carbon $44.6/ton, and the integration of the complete
hydrogen energy chain reduces the renewable energy curtailment by 97.0%.
Besides, the portfolio selection results indicate that the system favors the
SOEC with the highest energy efficiency and the PEMFC with the fastest dynamic
response when achieving zero-carbon emissionsComment: 32 pages, 17 figure