Study On Low-carbon Scheduling Of Power System Based On Csp And Carbon Capture Technology

The energy crisis and environmental pollution have led to profound changes in the power industry,and the realization of clean energy replacement and low-carbon power is the main development direction of the future power system.In recent years,the installed capacity of wind power in China has been increasing year by year.However,due to its inherent fluctuation,the supply side schedulability of power system is reduced after large-scale wind power is connected to the grid,so the phenomenon of wind abandoning and power rationing is becoming more and more serious.Although traditional thermal power can reduce its volatility by adjusting output to match wind power,it will make it impossible for thermal power units to operate stably in the optimal design range,which will not only greatly affect the economy,but also aggravate carbon emissions.Therefore,it is urgent to study the use of schedulable new energy and reduce carbon emissions of thermal power units to promote low-carbon scheduling of power systems.As an emerging form of solar power generation,CSP has excellent controllability and scheduling capability,which can promote power substitution through reasonable scheduling of photothermal power generation.Carbon capture technology can effectively reduce the carbon emissions of fossil fuel units,reduce environmental pollution caused by the power industry,and carbon capture technology has the ability to cooperate with renewable energy.Therefore,this paper fully exploits the cooperation capacity of CSP,CCS and DG,coordinates and dispatches all kinds of power generation units,in addition to studies the methods to promote the consumption of landscape and realize the low-carbon dispatching of power system.Based on the analysis of the basic operating mechanism of CSP,this paper first researches the conversion process of sunlight-thermal-electricity and the working principle of CSP,analyzed the influence of each component on the operating characteristics of CSP,and then studied the output time-shift characteristics and scheduling capacity of CSP.Then,based on the analysis of the basic structure of the carbon capture system,the working principle of the carbon capture power plant is studied,and it is concluded that the carbon capture unit can promote the generation of renewable energy.Besides,the renewable energy can also provide energy consumption for the carbon capture system.This shows that carbon capture plants and renewable energy have complementary capabilities.Then,a multi-source joint scheduling model based on the regulation characteristics of CSP is proposed to optimize the cost.In addition to the traditional power system constraints,the model also considers the power dispatching and thermal dispatching of CSP.The model explores the capacity of CSP to promote the consumption of new energy by taking electric power substitution as tfhe core.By using the CPLEX solution model,the example results show that CSP has strong schedulability and can effectively improve the consumption scale of wind power and photovoltaic.CSP can absorb renewable energy with renewable energy,and it plays an important role in electric power substitution.Finally,in order to promote electric power substitution and low-carbon development,a virtual power plant is formed by integrating wind power,CSP and carbon capture plant.A coordinated optimal scheduling model of wind-csp-carbon capture virtual power plant considering the uncertainty of source charge is proposed.In this model,flizzy theory is introduced to express the uncertainty of wind power and load through fuzzy parameters.Considering the operation cost of each power station and the constraints of grid safety operation,the simulation results verify that the proposed model can effectively promote wind power consumption by solving the model with CPLEX optimization software.The model can promote electric power substitution and low-carbon development.