China's revised " Renewable Energy Law" clearly stipulates that: Power grid companies should strengthen the construction of power grids, expand the scope of renewable energy power deployment, develop and apply smart grids, energy storage and other technologies, improve the operation and management of power grids, and increase the absorption of renewable energy The ability to provide Internet access for renewable energy generation.
This is the first time that China's law clearly encourages grid companies to participate in the construction of smart grids. "Renewable Energy Law" to encourage smart grid construction, power grid enterprises to develop more conducive to planning and construction of the smart grid, the capital of China's smart grid configuration to achieve the desired scale.
The construction of a smart grid can lead to the development of a series of industries. High power electronic technologies are among them.
Power electronics technology was born in the middle of the 20th century and is a technology that uses power electronic devices (such as thyristors, insulated gate bipolar transistors, etc.) to convert and control electrical energy. The energy-saving effect of this technology reaches 10% to 40% , which can effectively reduce the size of electromechanical equipment, improve the operating efficiency of the equipment, and achieve the optimal system. The smart grid aims to achieve reliable, safe, economical and efficient operation of the power grid through a series of advanced communications, measurement and control technologies. Therefore, from the definition of the two, it can be seen that high-power electronic technology can effectively meet the characteristics required by the smart grid, and is an important technical foundation of the smart grid.
From the point of view of the birth of electricity, the degree of intelligence in power generation, transmission, substation, power distribution, electricity use, and dispatching determines whether the entire power grid is intelligent. The construction of a smart grid can make clean energy as much as possible available on the premise of ensuring the safe and stable operation of the power grid. Therefore, smart dispatching is very important for building a smart grid. As more clean energy sources are used to generate electricity and the effects of their unstable characteristics are eliminated, which affects the safety and stability of the entire power grid, flexible AC transmission technologies are widely used because they can significantly increase transmission efficiency, reduce network losses, and ensure safe operation of the power grid. Smart dispatching and flexible AC transmission all require high-power power electronics technology support.
1980s, as semiconductor components to the high-power, high-capacity development, development of power electronics industry to FACTS static var compensator means is represented in HVDC transmission is representative of the new EHV Technology, electrical drive technology represented by high-voltage frequency conversion, synchronous breaking technology represented by smart switches, and user power technologies represented by static var generators, dynamic voltage restorers, etc.
Power electronics technology is a medium for the control of weak electricity and strong electricity, and is an important way for mechanical and electrical equipment to connect to computers. According to predictions from developed countries, 95% of the electricity will be used in the future, and it will be used after being processed by power electronics technology. Accelerating the research, development and application of high-power power electronic technology at the time of the arrival of the green revolutionary storm in the power grid can provide a solid foundation for China's power grids, build up new energy industry in China and accumulate power for China's advanced power and energy use countries. Arms.
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