The future development of smart grid to break nine major technologies

Smart grid construction is a systematic project and long-term work involving all aspects of society. From 1999, Tsinghua University proposed the concept of digital power system, opened the prelude to the research of digital power grid in China so far, China has made many achievements in the field of smart grid. The future development of smart grid, from a technical point of view, I think we should include the following nine aspects: First, to strengthen the smart grid planning theory and methods. As the load distribution, power distribution and power flow of traditional power grids change, the original planning methods can not meet the requirements of system planning in the new environment, so the research on the theories and methods of smart grid planning needs to be further strengthened. The second is to propose a unified standard and model. This is the key to ensuring the success of the smart grid. First of all, building a smart grid requires a unified data model, a unified transmission and exchange protocol, a unified network, and an efficient and interworking, centralized and coordinated power system information architecture. Therefore, our country should organize the development of technical standards as soon as possible, put forward the standard architecture of China's smart grid; Third, research energy storage technology. Develop and research and apply energy storage technologies to control the storage of surplus electric energy and the release of electric energy and convert a large amount of uncontrollable clean energy into stable, reliable and controllable energy to maximize clean energy; Fourth, the construction of intelligent scheduling system. With the intelligent development of the power grid, further research should be conducted on grid-connected operation control technologies and demand-side response models of new energy sources, distributed energy sources, microgrids, energy storage, etc. Based on the progress of science and technology information technologies, an advanced, safe, Reliable intelligent scheduling system to improve safety and stability of power grid operation and operational efficiency; Fifth, promote new energy and clean coal power generation technology. Focus on the advanced core technology of new energy power generation control, so that new energy power plants to provide high-quality power to the grid at the same time have the ability to support the operation of the power grid to achieve friendly interaction with the grid; Sixth, improve the intelligent equipment and intelligent substation construction. Starting from the overall plan of smart grid, we will start the construction of smart substations step by step. Formulate the corresponding standards and norms, standardize the construction of intelligent substation and related intelligent equipment research and development; Seven is to speed up the construction of smart distribution network. As a key link to improve the overall performance and efficiency of power grids, the grid structure of distribution network and the automation and informationization of distribution networks should be strengthened to support the flexible and reliable access to distributed power supply, micro-grid and energy storage devices and to improve the distribution network Performance, improve power quality, ensure power supply reliability; Eight is the development of interactive intelligent electricity. Implementation of dynamic price management, guide users to rational use of electricity. Allow users to participate in the interaction between supply and demand, to achieve a wide range of peak load shifting, reducing system reserve capacity, to ensure smooth power output and the system safe and reliable operation. At the same time, we should guide and encourage users to develop and utilize distributed power sources and new energy sources, support users to access the Internet, and solve energy supply problems from the user side. Nine is to promote the development of electric vehicles. On the one hand, through the construction of a smart grid, it will improve the network of charging and discharging infrastructure for electric vehicles, as well as the rational layout of charging and discharging stations for electric vehicles. On the other hand, to promote EVs to become mobile and distributed energy storage units in the power grid can effectively reduce the peak-to-valley difference of the power grids and the traditional peak-generation standby generation capacity and improve grid utilization efficiency.