Iegs Low Carbon Economy Scheduling Considering Liquid Storage Carbon Capture Technology And Dual Demand Response

The integrated electricity-gas system(IEGS)integrates multiple energy structures of electric energy and natural gas,and improves energy utilization efficiency and reduces system carbon emissions by coordinating and controlling various energy systems.It is of practical significance to introduce liquid storage carbon capture technology on the power supply side to implement low-carbon transformation of traditional thermal power units.In addition,the dual demand response is used to achieve peak load shifting on the load side,and the power consumption of the electric load in each period is flexibly adjusted to provide a control method for the low-carbon economic operation of the system.Based on the above background,this paper determines the research object as an electric-gas integrated energy system.At the same time,starting from the supply and demand side of the integrated energy system,the optimal scheduling problem of the integrated energy system considering the liquid storage carbon capture technology,power-to-gas technology and the load-side dual demand response mechanism considering user satisfaction is studied.The specific contents and results are as follows:Firstly,according to the overall framework of the electricity-gas integrated energy system,the working principles of the main components of the liquid storage carbon capture system(LSCCS),the coupling equipment gas turbine and the power to gas(P2G)device and the load side dual demand response in the system are analyzed,and the mathematical model of each component unit is established,which lays a mathematical theoretical foundation for the subsequent optimal scheduling of the system.Secondly,the correlation between liquid storage carbon capture technology and P2G technology in the utilization of CO2 raw materials in the integrated electricity-gas energy system is analyzed,and a joint operation mode of LSCCS and P2G is proposed.The solution storage is used to adjust the amount of CO2 processed by the liquid storage carbon capture system at each time period,so as to provide sufficient carbon source for the P2G device to synthesize natural gas,and solve the carbon storage problem caused by the capture of CO2 in the liquid storage carbon capture system and the CO2 raw material supply problem of the P2G device.Based on this joint operation mode,a low-carbon economic dispatch model based on LSCCS and P2Gjoint operation is established.The example shows that the combined operation mode of LSCCS and P2G is more conducive to reducing the carbon emissions of the system and improving the consumption rate of clean energy than introducing liquid storage carbon capture equipment and power-to-gas device alone.Finally,the source-load low-carbon complementary mechanism is used to combine the liquid storage carbon capture technology on the power side with the dual demand response on the load side.The source-load low-carbon complementary mechanism during the peak and trough periods of the load is analyzed,and a low-carbon economic dispatch model considering liquid storage carbon capture technology and dual demand response is established.The results of the example show that the j oint operation mode of LSCCS and P2G on the power supply side realizes the recycling of carbon,and the dual demand response on the load side flexibly adjusts the electric load of each period and consumes wind power.The cooperation between the two further promotes the low-carbon economic operation of the electricity-gas integrated energy system.