| The development of new energy and renewable energy is one of the engines for a new round of world economic growth. The construction of smart power grids, the formation of electricity as well as the center of energy allocation system, are the solution for the development of green low carbon energy to ensure the sustainable energy supply, which is important guarantee of social development in the future. On the bases of the present condition of the National Olympic Sports Center, this thesis articulated the planning and design of smart micro grid to promotione the rational use of solar photovoltaic technology and its storage technology, application of automation technology in tele-communication system, and ensurance of the green, efficient and high quality power supply of the National Olympic Sports Center.Aiming at the smart micro-grid planning and design for the National Olympic Sports Center, the thesis focuses on the following four aspects:master scheme of the smart micro power grid planning and design, the design of the solar photovoltaic power generation system, the design of the energy storage system, and the design of the micro power distribution automation system.First of all, this thesis describes the key points of the scheme design of the following subjects:the grid structure, soloar photovoltaic power generation, energy storage, and smart power distribution. With the comparison of different grid structure schemes, the solution is the dual-emitter (switching station) power supply scheme. This thesis explains the design of each section for the grid structure, and completes the master scheme of smart micro grid planning and design. By comparing and analyzing three different PV schemes, the best solution to this design is the distributed photovoltaic setup and local access scheme. As for the Yingdong Natatorium, the photovoltaic power generation system is designed and is dedicated to the electric vehicles, including the sloar photovoltaic power generation system structure, main technical features of design as well as the electrical circuit design for the electric vehicle recharge by taking full consideration of the recharge needs of the electric vehicle outside the natatorium. Finally, the issue of of photovoltaic power generation system power capacity prediction was discussesd, thus the solar photovoltaic power generation system design was finished. Secondly, this thesis analyzed the different characteristics of various energy storage devices. Based on the comparasion and analysis, the liquid flow battery for centralized energy storage is the best solution for the smart micro grid, and the master design of the energy storage system is completed. Finally, this thesis fully elaborates the main function and structure of the micro grid energy management system. The distribution system is divided into three categories:the master station system, the subsystem, and the terminal system. This paper explains the main functions of each category, and the master design of the distribution automation system block diagram.The design of this case fully displays the great impact of contemporary information, latest development of the material technology, storage technology and grid structure on the power grid. The optimization and auto-adaption control in different sections of the Olympic Sports Center makes its power grid more secure, reliable, clean and efficient smart micro grid system, which thus shows promotion of micro-grid, green energy, energy conservation and other advasing concepts. |
PDF Full Text Request