Research on Energy Storage Configuration of Composite Power Station Combined with Electric Hydrogen Generation System
Renewable energy composite power station(RECPS) formed by the complementary power generation of various new energy power supply has the advantage of new energy grid connectivity,but only relying on the complementary nature of various new energy power generation is still unable to effectively consume new energy power in large-scale power abandonment.To meet the demand for effective consumption of new energy in RECPS,the electric-hydrogen hybrid energy system (EHHES) coupled with electric energy storage and electric hydrogen generation system is constructed,and the EHHES operation strategy is formulated.On this basis,the hybrid system configuration model is established with the objective of maximizing the net present value of the EHHES,comprehensive considering the benefits of the grid connectivily of the RECPS,the benefits of carbon emission reduction,and the costs and benefits of the whole process of hydrogen production,storage,transportation,and distribution.The simulation results show that when EHHES is configured,the system can effectively consume new energy and reduce power abandonment,but it is not commercialized at present.Sensitivity analysis of factors affecting the economics of EHHES is carried out.The analysis results show that in a short period of time,the cost reduction of the electric hydrogen generation system cannot achieve the commercialization of EHHES;however,with the development of low-carbon economy and shared energy storage,RECPS configured with EHHES is still the development direction in the future.
Electric energy storageElectric hydrogen generation systemElectric-hydrogen hybrid energy system(EHHES)Renewable energy composite power station(RECPS)Capacity allocationEconomic analysis
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