Low-Carbon Economic Dispatch Of Integrated Energy System With Power To Gas

As the energy crisis and environmental issues become more urgent,making full use of typical clean renewable energy such as wind power is an effective way to resolve the current conflict between energy supply and environmental pollution.The randomness and intermittent nature of wind power will affect the safe and stable operation of the power system,and there will be abandonment.The power-to-gas technology can eliminate the surplus wind power and supply the obtained natural gas to the gas turbine or storage,and build a bridge of gas-electric two-way integration to promote the integration of the power system and the natural gas network.The research on the two-way interactive electric-gas interconnected integrated energy system is of great significance in improving the flexibility,safe and stable operation of the power system,and reducing environmental pollution.On the basis of summarizing the existing literature,the concept and development history of the electric-gas interconnected integrated energy system are expounded.Combined with the actual characteristics of each equipment,the structure and mathematical model of the electric-gas interconnected integrated energy system are introduced.Aiming at the existing abandonment problem,the wind power plant is abandoned and the wind power is smoothed.Based on the power-to-gas technology to dissipate the wind power to produce hydrogen,the methanation reaction is added to obtain methane that can be directly utilized and stored.An electro-pneumatic integrated energy system model for power-to-gas devices,gas turbines and wind farms is proposed.The objective function of the model is to maximize the net benefit of the system.The gas turbine and electrolyzed water output are the decision variables of the system,and the different scenarios are analyzed.Abandoned wind conditions and income.The results show that the integrated energy system with power-to-gas technology can effectively reduce the wind;when the capacity configuration of the electrolyzer and methanator is optimal,the system is more economical.In order to solve the problem of energy shortage and high carbon dioxide emissions,consider the energy flow model and safety constraints of power-converted power systems and natural gas systems,and establish a low-carbon economic dispatch model for electric-gas interconnected integrated energy systems with power-to-gas technology,and introduce economics.The conversion coefficient converts the carbon dioxide emissions into the economic dimension and is included in the objective function,and together with the system operating cost constitutes the objective function with the lowest comprehensive cost.The simulation results show that the proposed model can effectively balance the low carbon and economy of the system operation.Taking different economic conversion factors will result in optimal scheduling results with low carbon and economical focus.In the context of sustainable green development,the use of power-to-gas technology to absorb wind power can smooth wind power output,providing a possibility for large-scale storage and transportation of renewable energy;taking carbon emissions into the objective function through economic conversion factors,Taking into account the economics and low carbon of the system,the flexibility of the system operation is enhanced.