Research On Low-carbon Economic Dispatch Of Regional Integrated Energy System Considering Wind Power Utilization

In recent years,with the rapid development of China’s economy,the energy supply model based on traditional fossil energy sources has made environmental problems increasingly prominent.There are a large number of wind power resources in northern China,and its rapid development has led to insufficient system acceptance capacity and serious abandoned wind problems.Under the national dual carbon target policy,how to promote energy structure transformation,renewable energy consumption,and reduce carbon emissions has become the current focus of research.The integrated energy system provides new ideas for achieving coordinated operation of different energy sources,improving wind power acceptance capacity,and reducing carbon emissions.This thesis considers introducing power to gas equipment and carbon trading mechanisms into regional integrated energy systems,and analyzes their effects on system economy,wind power utilization,and carbon emissions.Firstly,the architecture of regional integrated energy system was established based on energy hub,which was divided into energy supply side,energy conversion coupling side,and energy output side.analyzing the working principle of each part of equipment and establishing there mathematical modeling.In response to the difficulties in establishing the matrix of complex energy hub model,this thesis gives a general matrix modeling method to reduce the difficulty of matrix establishment,and the energy hub model matrix clearly displays the flow of energy between different forms of the system,which lays the theoretical foundation for the subsequent research.Secondly,this thesis analyzes the mechanism of wind abandonment by power to gas technology and proposes the control strategy of wind abandonment start-stop of power to gas equipment.Establish an economic dispatch model for a regional comprehensive energy system based on power to gas equipment,with the overall operating cost of the system as the optimization objective.The improved particle swarm optimization algorithm is used to solve the model.In order to solve the problem of particle swarm algorithm falling into local optima and improve convergence speed,the particle inertia weight and learning factor are adjusted through adaptive relative progress,and the particles that do not meet the conditions are processed through constraint self adjustment.Through simulation analysis of numerical examples,the results show that the power to gas equipment adopts wind abandonment start-stop control strategy,and the electricity consumed is all wind abandonment electricity,which avoids energy loss;In addition,the introduction of power to gas equipment into the regional integrated energy system has further improved the system’s wind power utilization while reducing economic costs.Finally,based on the economic dispatch model,a carbon trading mechanism is introduced,and a dynamic penalty carbon trading mechanism with constraints is constructed according to the deviation of the actual carbon emissions of the system and the allocated carbon quota of the system.and the carbon emission cost is introduced into the system economic cost;to further stimulate the potential of the system to absorb wind power,allocate a certain carbon quota for wind power output;On this basis,a multi-objective scheduling model with the minimum system economic cost and the minimum system wind abandonment is established,and an improved multi-objective particle swarm optimization algorithm is used to solve the model,By using crowding strategy to update and maintain the external archive set of multi-objective particle swarm optimization algorithm,and introducing adaptive parameter adjustment strategy to balance the local search and global exploration capabilities of the algorithm.By comparing and analyzing numerical cases,the multi-objective scheduling model can better balance the system economy and wind power utilization capacity;and setting a reasonable dynamic penalty factor coefficient can further absorb wind power and achieve a low-carbon emission reduction effect of the system economy;a suitable carbon trading price can be set to better balance the low-carbon and economic aspects of the system.This thesis includes 30 figures,14 tables,and 82 references.