Research On Optimal Dispatch Of Integrated Energy System Based On Carbon Trading In Two Main Stages

The energy transition is urgent as climate warming becomes more and more pronounced,and the IES provides a new way to help achieve energy-saving and emission reduction.There is something else have brought new opportunities and helped to achieve that goal,including carbon peaking and carbon neutrality goals,carbon trading,and CCUS.Therefore,the association of IES and carbon trading emerges as the times require.At the same time,IES technology has grown considerably with the support of the progress of energy conversion,clean energy,distributed energy resource systems,and physical information transmission.So,the introduction of carbon trading into the cold-heat-gas-electricity IES is necessary.It can not only integrate various kinds and forms of resources but also realize a variety of heterogeneous energy sources.On the one hand,the resources come from nature,such as the sun,the wind,and the earth.On the other hand,they come from humans,including electricity,thermal energy,and cold energy.It also promotes the complementary utilization and joint growth of various energy sources.Over and above,it also improves the availability ratio of clean energy.As the assistance of the carbon trading market,it reduces and absorbs carbon emissions even more,which helps and opens up a new way to achieve these goals.To achieve the coordinated optimization of different energy,this work starts with a concise pure power system.In this system,there are PV,WP,and load.This algorithm aims to achieve minimize the cost incurred by running the system.Besides,it should meet the user’s energy demand and the capacity of this energy storage.Also,the power rate of work should be considered.To solve this problem,the fitness-dependent optimizer(FDO)is effective.So far,a power schedule has been realized.However,the performance shows that a single-energy system is helpless to fit the load and absorb the excess photovoltaic,even if the battery was used to help it smooth that load and avoid the phenomenon of photovoltaic rejection.Later,cooling,heating,and air coupling equipment were added to build a comprehensive energy system.The main aim of this system is the same as before,to reduce the cost,which is limited by the capacity of devices,the demand of users,and the power rate of this equipment.So,a complete comprehensive energy optimization dispatch has been realized.Compared with the pure electricity system,the IES can not only better meet the various demands about the energy of users,but also smooth the curve which is formed by the load demands.Also,it fits the generation and consumption of renewable energies.Afterward,carbon emission has been introduced into the IES that includes cool-heat-gas-electricity,which is friendly to the environment for its low-carbon while running.In this system,the direct emission is from the burning of natural gas which is unavoidable,while the indirect factor is the use of electricity.Even if clean energy has increased year by year,thermal power is still the highest share of power generation in China.That’s the reason why we say electricity could generate carbon emissions.Moreover,carbon capture and utilization technology can absorb part of the carbon emission directly,which can be achieved by adding power to gas(P2G)equipment in this system.For one thing,it can reduce carbon emissions,for the other thing it saves the financial expenditure for the system operator by burning less natural gas on the other hand.It is found that the addition of P2 G has little impact on the optimal functioning of the system,which can be seen in the experimental simulation.It is always started up with the state of gas boilers and gas turbines which can directly generate carbon dioxide.After that,it consumes a certain amount of electricity but reduced plenty number of carbon emissions which is substantial.Although the operating cost of this system is increased by adding the carbon emission cost,it is worthwhile to exchange the economic cost for the environmental benefit of the district.Finally,to better integrate the IES into the carbon trading market and mobilize the enthusiasm of users for energy conservation and emission reduction,a stepped carbon trading cost mechanism is introduced into this system.It is intelligible for the system operators to seek the lowest cost while running the system from an economic perspective.However,such an economy is at the expense of the environment.The emergence of a carbon trading market allows the system operators to obtain certain benefits from reducing carbon emissions.That is to say,they can choose to reduce system carbon emissions for money,and also realize financial benefits while protecting the environment.Furthermore,dual-subject carbon trading has been formulated to guide users to participate in this activity with enthusiasm,which fully utilizes the demand-side response.It also exchanges the guider from the traditional electricity price to the unit of energy price and carbon trading price.Therefore,it plays a good performance in the economy and carbon emission while giving full play to the initiative of users.