Research On Generation Expansion Planning Considering Hydrogen Load

Hydrogen energy can be widely used in power,industry,transportation and municipal energy systems because of its advantages of flexible utilization forms and large scale long-term storage.Rich new energy electrolysis of water to produce hydrogen energy,hydrogen energy multi-form absorption,is conducive to the construction of new energy based new power system.The large-scale multi-form application of hydrogen energy will affect the structure and distribution of load in the future power system,which will bring challenges to the generation expansion planning of the system.To this end,this paper carries out research on generation expansion planning including hydrogen load from aspects of hydrogen load prediction and the impact of hydrogen load on new energy absorption capacity,mainly including:(1)Considering the industrial,transportation and municipal heating demand "hydrogen substitution",build the support vector machine(SVM)and grey GM(1,1)model combined load forecasting model more forms of hydrogen,and system-hydrogen storage process energy consumption and add/use hydrogen with hydrogen energy storage,hydrogen load transfer,hydrogen interruptible load flexible,establish more form hydrogen load equivalent electric load conversion model.(2)Based on the operation simulation method,the evaluation method of the influence of large-scale multi-form application of hydrogen energy on the new energy absorption capacity of the power system is proposed.Comprehensive consideration of power generation costs,environmental costs,load shedding penalty costs,hydrogen load compensation costs,and hydrogen storage equipment investment costs,the minimum total cost as the goal,running a simulation model is established,the cut expectations,abandon the wind load rate and the total cost as the hydrogen load to the new energy given ability evaluation index,hydrogen reveal the rule of load effect on new energy given capacity.(3)Finally,the generation expansion planning model is developed to take into account the hydrogen load impact.Under the constraint of power balance and other constraints,the power supply planning model is established to take into account the impact of hydrogen load and unify the investment decision of power supply,hydrogen production and storage equipment with the system operation simulation problem at the planning level,with the objective of minimizing the annualized cost of the system.In order to reduce the complexity of the model,the planning model adopts the "group planning" idea,that is,the expansion capacity of each type of power supply is planned from the level of power supply type.Finally,the results show that the total system cost decreases by 27.36%,the abandoned wind and light rate decreases to 6.38%,and the installed capacity of new energy increases to 53.20% compared with the power supply planning without hydrogen load,which verifies the rationality and effectiveness of the model.