Research On Optimal Dispatching Of Virtual Power Plant Considering Multi-type Energy

Since the new century,the development of social economy in the mining of traditional fossil fuels lead to lack of fossil energy storage,plus a definitive mining cause irreversible damage to the natural environment,the development of energy transformation,the use of traditional energy sources for power generation will gradually shift to clean energy generation,represented by wind power,photovoltaic power generation of clean energy development is rapid,considering the use of clean energy such as wind power and solar energy power generation has the advantage of low pollution,renewable,research scholars at home and abroad in recent years,the energy supply to aim for clean energy.Although this kind of energy has the characteristics of low carbon and environmental protection,the output characteristics of wind turbine generation and photovoltaic system generation are also intermittent,volatile and random,which makes the output of distributed energy not stable,thus leading to the problem of poor power supply reliability and stability of energy generation.The virtual power plant can aggregate all types of distributed power supply,controllable load and energy storage system,and rationally optimize the distribution of all types of energy output through coordination and control technology,so as to reduce the generation cost,increase the income of the virtual power plant,promote the consumption of clean energy and reduce environmental pollution at the same time.First of all,in this paper,the virtual power plant development status of domestic and foreign current situation of the development of detailed research and summarized,the concept of virtual power plants,typical structure,operation control mode is analyzed,at the same time,combination of virtual power plant unit was made in detail respectively,and the distributed energy to various distributed energy principle is introduced and the mathematical model of the distributed energy is described,and the operation of the virtual power plant characteristics made detailed introduction.Second,consider the environmental cost of virtual power plant operation optimization model is set up,the wind power,energy storage devices as well as combined gas turbine to form a virtual power plant,considering the gas turbine power output from the pollution gas effect on the environment,to build the virtual plant model with target of minimizing the total cost,considering the characteristics of energy model,through the comparative analysis before and after the optimization results indicate that the virtual power plant can allocate various types of energy output,compared with before optimization priority given clean energy,gas turbine overall output reduction,reducing the pollution of the environment,optimize the environment of virtual power plant after cost and comprehensive cost are decreased,Increased the economy of the virtual power plant model.Then,based on the prices of demand side response strategy to optimize the user load,this paper proposes a consists of demand side response,wind power,photovoltaic,virtual power plant operation optimization of gas turbine control method,in view of the scenery of renewable energy output uncertainty problems,make full use of the characteristics of various components and the virtual power plant complementary advantages,design reasonable operation strategy,establish the virtual power plant yield as the objective function,considering the constraint conditions of each type of energy at the same time,through the example simulation analysis,technology demand side response can guide the user side way more reasonable,peak sharpening effect significantly,at the same time make the virtual power plant yield is the largest.Finally,the main content of this paper is summarized,and the future research direction is prospected.