Smart grid from concept to practice
The development of smart grid is based on people's optimistic estimation of the future development of renewable energy, and its main purpose is also to deal with the future large-scale utilization of renewable energy. The large-scale utilization of renewable energy will promote major changes in the methods of power generation, transmission and electricity consumption.
Smart grid solves two major problems
To stimulate the recovery of the US economy, smart grids have become an important part of the energy strategy implemented by US President Barack Obama after taking office, and this professional vocabulary has become a household name overnight. Due to the development trend of low-carbon economy, smart grid has also attracted unprecedented attention from governments around the world.
In China, facing the new situation and new challenges, the State Grid Corporation of China quickly raised the "smart grid" to a strategic level. In the first half of this year, it proposed to build a strong power grid with UHV power grid as the backbone and coordinated development of power grids at all levels. Foundation, a unified and strong smart grid plan featuring informatization, digitization, automation, and interaction. In response to this plan, the State Grid has made a three-step plan, from 2009 to 2010 as the planning pilot stage, from 2011 to 2015 as the comprehensive construction stage, and from 2016 to 2020 as the leading upgrade stage. In August last year, the first phase of the work was fully launched. It will focus on smart grid planning, formulate technical standards and management specifications, study key technologies and develop intelligent equipment, and carry out pilot work in various links. It is reported that the first phase of work has made some progress.
In today's world facing severe environmental warming and energy shortages and other environmental and energy issues, the development of smart grids is extremely important. According to experts, the construction of smart grids can solve two important problems, and this will be of great help to the challenges of energy and environmental issues.
The intelligent transformation of the power grid can improve the efficiency of the power grid. Wang Zhihua, deputy director of the Institute of Microelectronics at Tsinghua University, said that according to statistics, the world ’s total power generation consumes about 40% of the internal power grid. According to data provided by the US Department of Energy, if the efficiency of the US power grid is increased by 5%, the savings Energy is equivalent to reducing the carbon dioxide emissions generated by 53 million cars. Building a smart grid is an effective way to improve the transmission efficiency of the grid.
Smart grid also provides conditions for renewable energy power generation and grid connection. Xiao Liye, director of the Institute of Electrical Engineering of the Chinese Academy of Sciences, told the China Electronics News that because wind power, photovoltaic and other new energy generation methods are different from traditional energy sources, and transmission and distribution methods are also quite different, grid-connected power generation can only be achieved through smart grids. They are also different from traditional energy sources in terms of power consumption objects and power consumption methods. For example, the application of electric vehicles will be popularized in the future, and more energy storage power stations will also be built. These will need to be realized on the basis of grid intelligence.
The distributed utilization of new energy is the focus
From the perspective of the development process of smart grid, it is also mainly in the direction of solving the above two problems. The Intelligrid Smart Grid concept first proposed by the United States in 2001 was based on ensuring power supply, improving the transmission and distribution efficiency of the power grid, and using grids to reduce power cuts and upgrade the power grid. Afterwards, on this basis, the "Grid2003" plan proposed by the United States in 2003 outlined the framework of the smart grid more comprehensively. In the subsequent gradual development, with the advancement of new energy power generation technology and the lack of traditional energy, the development of smart grids increasingly emphasizes the distributed utilization of new energy, especially renewable energy. There are already some smart grid pilot cities under construction in the United States and some European countries, and these pilot cities combine renewable energy with traditional energy generation.
For example, Xiao Liye said that in 2008, the United States built a smart grid pilot city in Boulder, Colorado, combining power distribution technology with wind power and solar power to build a real-time high-speed two-way communication network for the distribution network, integrating infrastructure, and supporting Distributed power generation such as small wind power and solar power generation, and has related energy storage technology.
He pointed out that the development of smart grid is based on people's optimistic estimation of the future development of renewable energy, and its main purpose is also to deal with the future large-scale utilization of renewable energy. The large-scale utilization of renewable energy will promote major changes in the methods of power generation, transmission and electricity consumption. He believes that China's development of smart grids should also put the promotion of large-scale utilization of new energy in the first place. At this stage, China should mainly start from the construction of new energy distributed utilization demonstration sites, and do a good job in the integration of distribution systems and distributed energy utilization To do demonstrations in small cities first, it is advisable to conduct research on key technologies and standards on large power grids, such as frame structure research.
China has a good foundation
Experts believe that China has a good foundation for the development of smart grids. China has been studying smart grids for many years. In 1999, it proposed the concept of a digital power system, which is very close to what is now called the smart grid concept. Facing the distributed utilization of renewable energy, China began research on distributed power technology in 2001.
Although the concept of smart grid has not appeared before, the digitalization of the power system has been carried out on the improvement and development of China's power grid. Zhou Jiquan, chief engineer of power equipment supplier Xu Ji Electric and director of Xu Ji Group Smart Grid Research Center, told reporters: "The digital substation originally developed in China is actually the same direction as the intelligent substation. It requires the digitization of power equipment. The main feature is the realization of the collection and visualization of power data, and the meaning of intelligence is more on this basis. Going to the next level, we need to achieve more control and applications on the basis of visualization. "He believes that intelligence is the deep processing of data, providing a smarter brain for automation services and achieving a stronger substation Control and automation application capabilities, such as its own control, self-coordination and interaction capabilities. In addition to these, China's power equipment is relatively advanced overall, and these have laid a solid foundation for the construction of smart grids.
220Uh Inductor,High Current Inductor,Magnetic Inductor,Toroidal Core Inductor
IHUA INDUSTRIES CO.,LTD. , https://www.ihua-transformer.com