To balance exergy efficiency and economic cost of microgrids
and to ensure the accuracy and objectivity of the optimization results
a multi-objective capacity optimization method is proposed for hydrogen-based combined cooling
heating
and power (CCHP)independent microgrids
with a focus on exergy efficiency. First
the recovery of waste heat during the electricity-hydrogen-electricity conversion process is considered. An independent microgrid system is proposed
which includes wind and photovoltaic power systems
hydrogen storage systems
air source heat pumps
and absorption chillers. Secondly
the coupling relationship and energy utilization levels of various energy sources in the system are measured using exergy analysis. A multi-objective capacity optimization model is then created with the optimization goals of system's economic cost and exergy efficiency. Lastly
to acquire the best configuration results that consider system's economic cost and exergy efficiency
the -constraint approach in conjunction with CRITIC-TOPSIS is employed. The illustration verifies the validity of the proposed model and method
which can satisfy the demand of multiple loads in different typical day scenarios.
FACCI A L, UBERTINI S.Analysis of a fuel cell combined heat and power plant under realistic smart management scenarios[J]. Applied energy, 2018, 216: 60-72.
BUDAK Y, DEVRIM Y.Investigation of micro-combined heat and power application of PEM fuel cell systems[J]. Energy conversion and management, 2018, 160: 486-494.
ZHU X Y, GUI P P, ZHANG X X, et al.Multi-objective optimization of a hybrid energy system integrated with solar-wind-PEMFC and energy storage[J]. Journal of energy storage, 2023, 72: 108562.
YU S, FAN Y, SHI Z R, et al.Hydrogen-based combined heat and power systems: a review of technologies and challenges[J]. International journal of hydrogen energy, 2023, 48(89): 34906-34929.
LIU L T, ZHAI R R, HU Y D.Multi-objective optimization with advanced exergy analysis of a wind-solar-hydrogen multi-energy supply system[J]. Applied energy, 2023, 348: 121512.
KHOSRAVI A, KOURY R N N, MACHADO L, et al. Energy, exergy and economic analysis of a hybrid renewable energy with hydrogen storage system[J]. Energy, 2018, 148: 1087-1102.