Research On Wind Power Accommodation Low-carbon Economic Dispatch Considering Thermal Storage And Carbon Capture Devices

Global warming makes the reduction of greenhouse gas emissions imminent, because of the large amount of CO2 emission, CO2 emission reduction in power industry is very important. The rapid development of wind power has made an important contribution for energy saving and emission reduction in electric power industry, but with the installed capacity growing, the consumptive problem has become an important factor to restrict the development of wind power, especially in the northern China, cogeneration units accounted for a large proportion, in the winter heating period, because of its operation mode, the thermal storage device have high force output, which makes the power grid’s ability of acceptance of wind power limited, and a lot of wind power is abandoned.To solve the above problem, this paper proposes using thermal storage device to solve the peak shaving problem of the cogeneration unit. At the same time, using the auxiliary functions of carbon capture equipment in improving the peak shaving capacity of the system, study on low carbon economic dispatch of power system with wind power included. The main research contents are as follows:Firstly, analyze the thermoelectric coupling operation characteristics of the units, and study on the principle of using thermal storage device to improve the peak-load regulation ability of the cogeneration unit; and analyze the auxiliary function of carbon capture equipment in flexible operation mode on changing the peak-load regulation ability of the units.Secondly, aiming at the problem of waste wind in the northern China, this paper proposed a power system optimal scheduling model with cogeneration power plant with thermal storage device configured and carbon capture power plant included. The scheduling model take two objectives into account, the lowest total power consumption cost and the least CO2 emissions. The MOBCC algorithm is used to solve the model. Derive the formulas to calculate the minimum thermal storage capacity and the heat release rate of the thermal storage device, under the condition of certain load and wind. Though the numerical simulation, the accommodation situation of wind power in different scenarios and the economic cost and carbon emissions of the system are analyzed.Finally, the carbon trading mechanism is led into the low carbon economic dispatch model of power system, with wind power and cogeneration units and thermal storage device included. Though the numerical simulation, this paper analyzes economic efficiency and emission reduction effect brought by the thermal storage device, and the effect of different carbon trading price for CO2 emission reduction.