Recently, the world's first new energy power station with virtual synchronous machine function was completed and put into operation at the National Photovoltaic Storage and Transportation Demonstration Plant, and the application of the State Grid Virtual Synchronous Machine Technology can be described as a sample of the development of world power grid technology, Building a clean, low-carbon, safe and efficient energy system is of great and far-reaching significance.
Virtual synchronous machine technology is a kind of advanced synchronous inverter technology and inertial energy storage unit, based on the new energy power generation with conventional thermal power outside the technology.While the large-scale intermittent new energy through virtual synchronous machine access to the grid, can provide a certain Active and reactive support, and effectively suppress the frequency oscillation, so as to achieve the new energy and friendly grid.
Virtual synchronous machine technology was put forward in 1997, the United Kingdom, the United States, Germany and the Netherlands and other new energy experts are working hard to tackle key issues, is still in the theoretical research and laboratory prototype (one hundred kilowatts) development stage, no engineering application related reports, But in the end the technology was overcome by the State Grid, which enabled new energy generating units to change from 'self-reliant' to 'orbiting' coordinated and unified, actively supporting grid frequency and voltage fluctuations, and effectively ensuring the safe and stable operation of the grid.
New energy virtual synchronous machine technology demonstration project lasted two years, is one of the State Grid Ten Science and Technology Innovation Demonstration Project.State Grid from key technology research to equipment development, from theory to practice, a comprehensive grasp of the virtual synchronous machine core technology, a substantial increase Scenery Storage and Transportation Demonstration Base actively involved in the system once the frequency modulation and voltage regulation capabilities for large-scale new energy-friendly grid provides a new technical means to form a new energy-friendly grid with the standard model to further consolidate our country in the relevant fields Technology leadership.
SGCC, as the world's largest and fastest-growing power grid with access to new energy sources, has set up a virtual synchronous machine demonstration project to guide the market and customers to gradually upgrade their grid-connected equipment and explore the friendly and interactive mode of "source, network and load" , Bear an important manifestation of social responsibility, but also power grid interconnection, autonomous synchronization, building one of the important steps of the global energy Internet.
Undoubtedly, as a pioneer and facilitator of virtual synchronous generator technology, State Grid, a world-leading project, not only can enhance the safe and stable operation of power grids, provide a standard model for new energy-friendly grid interconnection, but also can enhance power grid High permeability of renewable energy consumption capacity, the construction of national renewable energy demonstration areas and China's large-scale development and utilization of clean energy is of great significance.