Study On Coordinated Optimal Operation Of Wind Power System Considering Environment And Economy

As the global energy and environment problem is becoming more and more serious,as a single power generation cost for a single goal of traditional economic load dispatch has not meet the requirements of national"energy conservation and emissions reduction"macro strategy,at the same time,considering the economic benefits of environment and economy.Environmental economic dispatch has come to widespread attention.In addition,the rapid development of wind power has also promoted the cleanliness of the power system.However,the randomness and uncontrollability of wind power output increase the difficulty of power system dispatching.This article aims at the above requirements to make some improvements to the traditional scheduling model to adapt to the development of today's society.According to the above theoretical study,this paper conducts the following research on joint thermal-fired scheduling problems considering environmental costs and carbon rights trading.First,the desulfurization and denitrification technologies were introduced,and the methods commonly used in China for desulfurization and denitrification were introduced.The operating costs of the desulfurization and denitrification devices were analyzed.Then the impact of environmental costs on the joint deployment of the winds and fires was studied.Then,the principle of carbon rights trading and the initial carbon emissions were introduced.Several allocation methods of quotas,the last calculation of carbon rights transaction costs based on China's carbon rights quotas,and then analyze the impact of the joint management of carbon rights trading.Secondly,in order to take into account the safety of the power grid and reduce the emission of pollutants at the same time,we proposed a wind and fire combined power generation scheduling model that considers environmental costs and network constraints,and constructed a wind-fired combined power generation scheduling system that considers the environmental costs of desulfurization,denitrification,and network transmission constraints.The model,on the premise of ensuring the safe operation of the power grid,not only reduces the emission of SO₂and NO_x,but also increases the capacity of the wind power network.This model takes the minimum cost of the system as the goal.Based on the traditional wind power economic dispatching,comprehensive consideration is given to factors such as the composition of the thermal power plant,environmental costs,operating costs of wind power,and network transmission constraints,and the model is solved by an improved genetic algorithm.The simulation example compares the traditional wind power dispatching method and the method of this paper.The validity of the model and the effectiveness of the proposed method are demonstrated to extend the grid's wind power consumption space,save scheduling costs,and improve environmental benefits.Finally,in order to take into account the low-carbon emissions of systems and the economy of electricity production,a new low-carbon economic dispatch model is proposed.The model includes consideration of thermal power operation costs,wind power operation costs,and environmental costs after carbon rights trading.The uncertainty of wind power increases the system's rotating reserve capacity,which increases the carbon emissions of thermal power units.For this reason,carbon dioxide emissions of thermal power are compensated for when calculating carbon emissions.The simulation example compares the three scheduling modes and analyzes the impact of carbon price changes on the scheduling results.The effects of changes in carbon trading prices on total carbon emissions and economic costs are analyzed.The results show that the proposed model is effective and feasible.The research work in this paper can provide the basis for the power dispatching department to arrange the economic scheduling plan before the day.