Research On Multi-Scene Wind-Photovoltaic Coupling Hydrogen Production System

As the "carbon peaking and carbon neutrality " goal is proposed,the way to accelerate the transformation of energy structure has become our high quality and high level of social development.We will vigorously promote clean energy to replace high-carbon energy,renewable energy to replace traditional fossil energy,and increase the proportion of wind and photovoltaic power generation in the energy supply system.However,while renewable energy provides a lot of power,it also brings the problem of uneven and intermittent output.With the development of electrolytic water hydrogen production technology,the output response of electrolytic cell is more sensitive.A wind-photovoltaic coupling hydrogen production system is formed by combining wind-solar complementary power generation system with hydrogen production equipment.The rationality of the optimal configuration of system capacity will affect the economy and reliability of operation.This thesis studies the optimization configuration of the wind-photovoltaic coupling hydrogen production system under different objective functions in different scenarios.The main research contents are as follows:First of all,this thesis designs the system architecture of off-grid,grid-connected and non-grid-connected scenarios,describes the working principles of wind power units,photovoltaic units,hydrogen production units and energy storage units,establishes their respective mathematical models and provides the corresponding parameters,and studies the technical route of the optimization configuration of the wind-photovoltaic coupling hydrogen production system,which lays the foundation for the construction and solution of the system optimization configuration model in the following thesis.Secondly,this thesis introduces the process and characteristics of optimization configuration of microgrid based on HOMER software,and builds a system optimization configuration model based on the principle of optimal value in off-grid scenarios in MATLAB.The load loss rate is added into the penalty function as the constraint of hydrogen production stability,and the iterative enumeration method is used to solve the problem,and the above two methods are respectively given as examples.Then,this thesis reviews the application of the system in multiple scenarios,analyzes the solution of the multi-objective optimization problem,studies the influence of the time-of-use tariff mechanism on the charging and discharging strategy of the energy storage unit,sets 12 working modes and develops different energy management operation strategies for three types of scenarios.This thesis completes the system optimization configuration modeling targeting ASC(Annualized System Cost),LPSP(Loss of Power Supply Probability)and LREG(Loss of Renewable Energy Generation).And the GA algorithm of the improved radar map model is used to solve the above model.In this thesis,the optimal capacity configuration of the system in off-grid,grid-connected and non-grid-connected scenarios is analyzed and compared with the solution results of the multi-objective weighting algorithm,and one set of configuration results is taken as an example to analyze the working mode ratio under different influencing factors.Finally,to solve the problem of frequent modification of m function,this thesis writes the optimization configuration software of the wind-photovoltaic coupling hydrogen production system based on MATALB App Designer,which is convenient for scene selection and parameter input.