Research On Capacity Configuration Optimization Of Photovoltaic Hydrogen Production Project With Energy Storage

With the rapid economic development,problems such as climate change,the shortage of fossil energy supply and environmental pollution have attracted people’s attention.Hydrogen,with its outstanding advantages of sustainable production,easy storage and zero pollution,has become the future development direction.In response to the call of national energy-saving and emission reduction policies,the use of renewable energy such as solar energy to produce hydrogen has become a new trend.However,hydrogen production from renewable energy sources such as solar energy has disadvantages such as poor reliability and intermittency.Energy storage batteries can achieve energy transfer,which is a favorable way to compensate for the aforementioned shortcoming.But the addition of energy storage will bring huge investment costs,greatly affecting the unit hydrogen production cost of photovoltaic hydrogen production projects.In addition,in photovoltaic hydrogen production projects that consider energy storage,the capacity of energy storage batteries and electrolyzer is mutually constrained.Therefore,on the basis of considering the unit hydrogen production cost of photovoltaic hydrogen production projects that take into account energy storage,it is essential to conduct research on the optimal capacity configuration of energy storage batteries and electrolyzers.The optimization of component capacity configuration can not only ensure the economic,stable,and efficient operation of the project,but also promote the promotion and application of renewable energy hydrogen production projects such as solar energy in various fields.This article first calculates the unit hydrogen production cost of off-grid photovoltaic hydrogen production projects considering energy storage.This paper systematically analyzes the cost composition of off-grid photovoltaic hydrogen production projects that include energy storage,and discusses the impact of technological progress rates on the unit hydrogen production cost of off-grid photovoltaic hydrogen production projects that include energy storage.Finally,the levelized cost of hydrogen production(LCOH)is calculated to accurately reflect the economics of off-grid photovoltaic hydrogen production projects that include energy storage.Secondly,taking the hydrogen production cost of off-grid photovoltaic hydrogen production projects equipped with energy storage as a component of the objective function,and considering the impact of multiple uncertain factors on the optimal capacity configuration of electrolyzers and energy storage batteries,a robust optimization model is constructed to further study the optimal capacity configuration problem of photovoltaic hydrogen production projects equipped with energy storage.That is,the article comprehensively considers the impact of multiple uncertain factors such as photovoltaic output,green card price,and hydrogen energy demand on project capacity configuration and project revenue.By establishing a robust optimization model and solving it,the optimal capacity configuration for photovoltaic hydrogen production projects that take energy storage into account is ultimately given.Finally,the feasibility and effectiveness of the model established in this paper are verified by a simulation case analysis based on the A project.Taking relevant parameters such as photovoltaic,energy storage,and hydrogen energy demand in the region where Project A is located as raw data for example analysis,the impact of multiple uncertainties such as photovoltaic output,green card price,and hydrogen energy demand on the optimal capacity configuration of a photovoltaic hydrogen production project that takes into account energy storage will be considered on this basis,and a comparative analysis will be conducted with capacity configuration results under eight scenarios that do not consider uncertainties.This article mainly contributes to the following three aspects.Firstly,the unit hydrogen production cost of photovoltaic hydrogen production projects that take into account energy storage is accurately calculated and analyzed.Secondly,based on the consideration of uncertain factors such as photovoltaic output,green certificate prices,and hydrogen energy demand,the capacity optimization configuration of photovoltaic hydrogen production projects considering energy storage is carried out.Finally,a robust optimization model is established to address the impact of uncertainty in photovoltaic output,green card prices,and hydrogen energy demand on project capacity configuration and project returns,ultimately resulting in a risk-resistant project capacity configuration.