Research On Optimal Scheduling Of Home Energy Management System With Distributed Energy

With the continuous growth of household electricity and the introduction of new energy sources,the power cost optimization problem of home users is being paid more and more attention,it is an effective way to deal with these problems by adopting the Home Energy Management System(HEMS).The structure of HEMS is introduced,the optimal scheduling model for HEMS is presented in this paper,it takes full account of the operation of household electrical equipment,distributed generation system,the charging and discharging of energy storage equipment and EV to optimize the home energy structure,HEMS is an automatic system which can adapt to the fluctuation of the home load and electricity price,which hopes to achieve the purpose of reducing energy consumption,ensuring the safe use of electricity,saving electricity cost and improving the reliability and stability of power grid,the main research contents are as follows:(1)The optimal scheduling algorithm of HEMS is analyzed,smart grid and demand response,smart home appliances and smart home,distributed generation energy storage and other related technologies are discussed,the paper also describes and analyzes the scheduling of energy,electrical equipment and future development direction in HEMS.(2)On the basis of taking into account the purchase of electricity from the grid at the right moment and combined with PV system power generation,a new optimization model of HEMS scheduling is proposed.The daily running state information of the household electrical appliances will be input to the dispatching system by the user in advance,at the same time,considering the power constraints of the grid and real-time electricity prices,the integer programming method and genetic algorithm are also introduced,in addition,the user satisfaction is also incorporated into the scheduling model for analysis.(3)Presenting a classification method based on a kind of home load with energy storage equipment and gives the corresponding mathematical description,the classification of household load equipment covers the basic household equipment,on the basis of the classification of equipment,the optimal operation decision model of household equipment in the environment of time-sharing electricity price is established,this model aims at minimizing user power costs and minimizing peak-valley differences,considering the coordination of multiple types of equipments and distributed new energy,in addition,the energy storage equipment and excess electricity to the grid is also taken into account.(4)Researching on home energy management issues with electric vehicles,wind power plants and energy storage,the energy management strategy is put forward,which takes into account of wind power output,electric vehicle charging and discharging power and time-sharing electricity price,at the same time,the charging and discharging management of EV and the travel demand of users are also taken into account.On the basis of above,a home energy management model based on the optimization of the charging and discharging power of electric vehicles and the economic optimal control target is established.The strategy can be more flexible to use the state of EV and energy storage for charging and discharging operation,and can maximize the use of renewable energy power generation.