Economic Optimization Dispatch Of New Power System Considering Carbon Measurement And Carbon Constraints

In the face of increasingly urgent challenges such as global energy security,environmental pollution and climate change.China is building a new power system dominated by renewable energy to provide important support for achieving the goal of"carbon peak and carbon neutral".Due to the significant fluctuation and intermittence of wind and photovoltaic generation,large-scale wind photovoltaic power generation connection makes it difficult to balance the system power across regions in different seasons and special periods,resulting in the phenomenon of abandoning wind and photovoltaic,and serious resource waste and economic loss.In addition,38%of the primary energy in rural China relies on firewood burning for heat.Energy supply technology is not only inefficient,wasteful of resources,but also seriously polluting the environment.Therefore,it is of great theoretical and practical significance to improve the consumption of clean energy in the new power system and the utilization level of energy efficiency in rural areas and promote green and low-carbon development.Faced with the above problems,this paper firstly reviews the development of the global carbon measurement system and the main carbon measurement methods.According to the actual data of large power generation enterprises at home and abroad,the accuracy of carbon measurement method in power generation industry is analyzed and verified.Secondly,the architecture of new interconnected power system with high proportion of new energy access and inter-regional power transmission under the target of "carbon peak" is analyzed,and the"cross-regional transmission-renewable generation-thermal electricity" is proposed.Considering the influence of weather conditions on wind and photovoltaic output,a high-proportion wind-photovoltaic wave moment uncertainty set is constructed by clustering of historical data of wind and photovoltaic output and the probability analysis of typical scenarios.Then the distributionally robust conditional value-at-risk is employed to characterize the risk of wind and photovoltaic.On this basis,a distributionally robust optimal dispatching model for new power systems is proposed,which considers economy,renewable generation,and low carbon operation simultaneously.To obtain a robust solution satisfying the requirements,the dual optimization theory is applied to transform the model into a traceable semi-definite programming problem.Taking the end-system of the new power system as the research object,case studies is performed for the proposed model.To put forward plans for high-proportion clean energy access and high-proportion inter-regional power transmission in 2025,2030 and 2035 to promote the realization of"carbon peak".Finally,the architecture and dispatching mode of zero-carbon rural energy supply system considering waste biomass-to-energy are analyzed under the background of new power system construction.The energy supply model of rural biomass-to-energy and the marginal carbon emission model of large power grid node are constructed.Considering the carbon sink of rural forestland and farmland,the optimization dispatch model of zero-carbon rural energy supply system considering biomass-to-energy and marginal carbon emission of large grid nodes is proposed.By solving the model and analyzing the example,it is verified that the proposed model can effectively reduce the dispatching cost of rural energy supply system,improve the utilization level of rural energy efficiency,and achieve zero carbon emission of rural energy supply system.Above all,this paper proposed "carbon peak" target under the new power system distributionally robust optimal operation model,consider waste biomass-to-energy and large power grid node marginal carbon zero carbon rural power supply system optimization dispatch model and so on,can effectively reduce carbon emissions,to achieve "double carbon" target in china to provide important theoretical support.