Five Key Points for China's Power Grid Development in the Next Five Years

It is already the world's highest voltage level and largest scale of China Power Grid. In the next five years, it will invest approximately 500 billion yuan annually in the scale of “solving the tense contradiction between coal and electricity transportation, adapting to the construction of large-scale energy bases and delivering a large amount of clean energy. The requirements of Namibia will meet the needs of economic and social development and people's living needs for electricity consumption. By 2015, it will initially build a world-class power grid.

The annual work conference of the State Grid Corporation of China held on the 7th revealed that the four major focuses of the rapid development of China's power grid in the next five years are: UHV, smart grid, a new round of rural power grid reconstruction, and internationalization.

Built UHV backbone grid

In the past five years, China has fully mastered the UHV power transmission core technology and a full set of equipment manufacturing capabilities, and has completed and put into operation three ultra-high voltage AC/DC transmission lines that can realize large-scale and long-distance transmission of electricity. "Created by China" and "China Leads."

Xue Shengsheng, Academician of the Chinese Academy of Engineering and Honorary President of the State Grid Electric Power Academy, commented: “Ultra high-voltage technology is a major change in the world's energy transmission methods. It will have a profound impact on human energy efficiency, green, and safe use of energy, just like space technology and high-speed rail technology. It is a major contribution to the world's industrial development during the "Eleventh Five-Year Plan" period in China."

"The development of UHV is the top priority for the development of the '12th Five-Year' power grid." Liu Zhenya, general manager of the State Grid Corporation of China, said that in the next five years, it will invest more than 500 billion yuan to build a "three vertical and three horizontal" UHV AC backbone grid. With 11 UHV DC transmission projects, the total length of the line will reach 40,000 kilometers, forming a strong grid of AC and DC coordinated development.

With the accelerating construction of large coal-fired, hydropower, nuclear power and renewable energy bases based on wind power and solar power in the western region, it is expected that by the end of 2020, the amount of electricity that needs to be transported over long distances will exceed 400 million kilowatts.

The main way to solve the issue of western energy to eastern power load centers is the UHV transmission line. According to reports, the “three vertical and three horizontal” UHV grids built in the next five years can send wind power and coal power from Inner Mongolia, Shaanxi and Hebei to North China, Central China, and East China through three vertical UHV channels; Electricity and hydropower in the southwest are sent to North China, Central China, and Yangtze River Delta regions via three transaxial high-voltage channels.

On January 6th this year, the "Southeastern Shanxi-Nanyang-Jingmen" line, the world's first UHV power transmission line, began its expansion after two years of operation. By the end of this year, the transmission capacity of this line will be doubled to 5 million kilowatts. Greatly ease the tension in coal and electricity transportation in central China. In addition, a number of UHV projects such as Huainan-Shanghai, Ximeng-Nanjing, etc. are expected to be approved by the State for start of construction this year.

Basically built a strong smart grid

On January 4, China's first intelligent substation using the Internet of Things technology, the 220 kV Xiqiao Smart Substation, was put into operation in Wuxi, Jiangsu, marking China's large-scale construction of a smart grid.

The smart grid is the key to achieving low-carbon development, which is rising in the world. Liu Zhenya said: "The next five years will be the critical period for China to accelerate the construction of a strong smart grid."

The planning of the State Grid Corporation is to build a strong, smart grid with the characteristics of information, automation, and interaction by 2015, and to form three synchronized grids with North China, Central China, and East China as the receivers, and the northwest and northeastern grids as the sending end. The power grid's resource allocation capability, economic operation efficiency, safety level, scientific and technological level, and intelligence level have been comprehensively improved, and a world-class power grid has been initially built.

Liu Zhenya said that the focus of smart grid construction in 2011 is to complete two batches of pilot projects, speed up the promotion of smart substations, distribution automation, power fiber to the home and other key projects, in Beijing, Yangzhou and other places to build a number of comprehensive demonstration projects, and promotion Apply 50 million smart meters.

Utilizing the advantages of the terminal power supply network, in 2010, the State Grid strongly promoted the construction of electric vehicle charging facilities, signed cooperation agreements with all local municipal governments within 26 provinces' operating areas, and fully completed the construction of new electric vehicles. Charge stations and 6029 charging pile plans.

“The operation mode of electric vehicles and the construction of charging and exchanging power stations are of great significance to the development of the company and the power grid.” Liu Zhenya revealed that this year, the State Grid will follow the basic business model of “mainly changing power, supplementing charging, focusing on charging, and unified distribution”. Accelerate the layout and construction of power station. It is expected that 150 charging and replacing stations will be completed throughout the year, and an electric vehicle replacement and charging service network will be established in cities such as Beijing, Hangzhou, Tianjin, Hefei, and Nanchang.