Considering Demand Response And Wind Power Uncertainty Of Electricity-Hydrogen Integrated Energy System Economic Dispatch

As technology advances,people’s demand for energy is increasing,bringing with it increasing carbon emissions and increasingly serious environmental pollution problems.In the context of the "double carbon" policy and the coupling of multiple energy sources,integrated energy systems have emerged.Hydrogen is the ideal clean energy source,and its use in combination with other energy sources can significantly reduce carbon emissions.At the same time,the intermittent and uncertain nature of grid-connected clean energy generation can have a significant impact on the power grid,which needs to be taken into account.On this basis,this paper establishes a model of an integrated electricity-hydrogen energy system combining electrical energy and hydrogen energy,combining the demand response on the load side and considering the uncertainty of wind power to realise the economic dispatch of the integrated energy system.Firstly,the physical structure of the electricity-hydrogen integrated energy system is constructed,the electricity system and the hydrogen energy system are studied separately,and the two systems are coupled by means of fuel cells and electrolytic cells,which are devices for the interconversion of electricity and hydrogen energy.Based on the above structure,mathematical models of the electric power network,the hydrogen energy network and the coupling elements are developed respectively.Secondly,in order to promote wind power consumption and reduce carbon emissions,this paper develops a price-based demand response model based on a logistic function of load shifting rate,which is used to simulate the actual electricity consumption load of customers.The model is combined with an integrated electricity-hydrogen energy system,and the objective function is to minimise economic costs and to carry out low carbon economic dispatch.The example verifies the suppression of wind abandonment by demand-side response,the promotion of hydrogen production from wind power and the superiority of the proposed load transfer rate model.Finally,considering the volatility and uncertainty of wind power,the Latin hypercube sampling method is used to generate wind power scenarios,and the scenario reduction method considering Kantorovich distance is used to reduce the generated scenarios to obtain typical wind power output scenarios,and the scheduling model of the electrichydrogen integrated energy system considering the uncertainty of wind power is established.By considering the uncertainty of wind power,the system operation under uncertainty is provided for decision makers.In combination with demand response,the wind abandonment can also be restrained under uncertainty,and the wind power consumption and economic operation of the system can be realized.