Electricity-hydrogen coupled integrated energy system:Resilience quantification and multi-objective optimization
In recent years,interest in electricity-hydrogen coupled integrated energy system is growing to enhance system resilience.This paper proposes a quantitative evaluation method of energy system resilience with high time resolution(hourly level),and constructs a bottom-up multi-objective optimization model to plan the park-level electricity-hydrogen coupled integrated energy system,to cope with the triple dilemma of the energy system(economic-environmental-resilience),and to assess the benefits of the application of electricity-hydrogen coupled technology to integrated energy system.In this paper,the methods and models proposed are applied to the energy system of an industrial park along the southeast coast of China as a case study,and multi-objective optimization is carried out under four carbon emission limitation scenarios according to the disturbance pattern of extreme events on the energy system in order to determine the optimal solution under each scenario.The results of the case studies indicate that,due to the current high cost of electricity-hydrogen coupled technology applications,electric-hydrogen coupled technology applications are of greater value only when both environmental and resilience of the energy system are required.With the strengthening of carbon emission constraints,the net present value cost of the economics objective function increases from 4.48×1010 RMB in the global scenario to 4.74×1010 RMB in the strongest carbon emission limitation scenario,which is an increase of 5.80％.The resilience indicator,on the other hand,decreases by 21％from 5 061.62 MWh to 4 184.01 MWh,and the electricity-hydrogen coupling significantly improves the environmental and resilience of the system.The optimal solution shows that hydrogen storage is not only an effective solution for long-term energy storage across seasons,but its unique advantages in short-term energy storage are also worthy of attention.Finally,comparing the new method of quantitative evaluation of resilience proposed in this paper with the representative previous method,it can improve the net present value of the optimized solution by 0.9％,the minimum level of system energy supply by 5.19％,and the system resilience by 12.57％.
electricity-hydrogen couplingintegrated energy systemextreme weatherresilience quantificationmulti-objective optimization
万方数据
维普
