| In today’s world,the long-term use of fossil fuels has caused serious environmental pollution.In addition,fossil energy is not renewable,and its development mode is unsustainable.Therefore,all the countries in the world are seeking a new path of energy development.As an important part of renewable energy generation,distributed photovoltaic generation has advantages of less contamination,higher economical efficiency and greater flexiblility,which has been widely applied now.Furthermore,as an emerging energy management tool,energy efficiency management system can be used to realize the efficient utilization of energy,so it has enormous economic potential,which has also been widely concerned by the international community.In this thesis,household distributed photovoltaic generation and energy management technology are combined,and a home energy management APP-applied system with distributed photovoltaic power station is designed.Firstly,the functional requirements of energy management system with household distributed photovoltaic power station are analyzed,and based on it,the system structure is designed,including the hardware structure and software structure.The hardware structure is composed of distributed photovoltaic generation subsystem,smart home subsystem and controller subsystem,and the software structure adopts the combination of C/S mode and B/S mode,thus combining the advantages of the two modes successfully.Secondly,the data acquisition schemes of photovoltaic power station and energy storage system are designed,which correspond to the field control layer of energy management system.The work modes of photovoltaic power station and energy storage system are analyzed,and according to the different situations,the corresponding communication formats and communication schemes are designed.Through the system experiment,the data of photovoltaic power station and energy storage system are acquired successfully.Thirdly,the network communication scheme of the system is designed,which is the communication management layer of energy management system.Based on several existing real-time communication schemes,the Socket communication scheme is selected to realize the communication.And then the Socket communication scheme based on TCP protocol and NAT traversal scheme based on UDP protocol are designed.Through comparison,the Socket communication scheme under TCP protocol is adopted,and the home gateway and server programming are finished.Finally,the test is carried out under the actual system environment,which proves the feasibility of the communication scheme.Finally,based on MVC mode,the home energy management client APP under the Android operation system is designed,which corresponds to the control layer of the energy management system.In the end,this project is applied in practice,which proves its feasibility and effectiveness. |
