Flexible Operation Strategy for Source and Load of Integrated Energy System Considering Efficient Utilization of Hydrogen Energy and Flexible Thermal and Electric Output
To further leverage the advantages of efficient utilization of hydrogen energy and build a green and low-carbon energy system,an integrated energy system(IES)source load flexible operation strategy considering efficient utilization of hydrogen energy and flexible load is proposed.Firstly,two improvements are made to the source-side energy supply model.One is to introduce a hydrogen energy utilization model that includes wind power hydrogen production,gas mixed hydrogen,multi energy hydrogen utilization,and hydrogen storage.Considering the heat loss during the electrolysis water and methane reaction process,a waste heat recovery device is introduced to construct an efficient hydrogen energy utilization model taking into account waste heat recovery.In response to the issue of insufficient flexibility in traditional cogeneration,a thermoelectric flexible output model with electric boilers and organic rankine cycles is constructed to decouple the limitations of traditional cogeneration in terms of"heat to electricity"and"electricity to heat".Secondly,the flexible electrical and thermal loads with transferability,reducibility,and translatability on the load side are introduced to alleviate the peak valley difference between electrical and thermal loads,and combined with the source side to form a flexible source load operation model.Finally,taking into account the costs of tiered carbon trading,equipment operation and maintenance,wind abandonment,and energy procurement,a integrated energy system flexible optimization operation model is established.The example simulation uses the CPLEX solver to solve the flexible operation model of the proposed comprehensive energy system source load,and sets different scenarios for comparisons.The results show that compared to conventional hydrogen energy utilization models,the total cost and carbon emissions of the system are reduced by 1.92％and 4.22％respectively when considering the hydrogen energy efficient utilization model with heat recovery.Moreover,the introduction of the CHP improved model further reduces the total cost and carbon emissions by 4.08％and 7.32％,achieving low-carbon,economical,and flexible operation of the system.
efficient utilization of hydrogen energycombined heat and power(CHP)flexible outputelectric heating flexible loadorganic rankine cycleintegrated energy system(IES)
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