Smart grid is changing China's energy layout

This year, the government work reports of the two National Committees proposed to strengthen the management of energy use, develop smart grids and distributed energy, and implement effective management methods such as energy-saving power generation dispatching, contract energy management, and government energy-saving procurement. During the “Twelfth Five-Year Plan” period, the “strong smart grid” with UHV as the basic feature may become the most sought-after investment object in China's power industry.

China's path is unevenly distributed between China's energy resources and consumer demand. For a long time, under the “locally balanced” power development model, the country’s coal transportation has relied too much on railways and highways, and coal prices and electricity prices have been increasing cyclically. Big. On the other hand, the current pressure for energy conservation and emission reduction in China has increased and the rapid development of clean energy has been promoted.

Under these two backgrounds, the State Grid Corporation of China's smart grid strategy starts with the acceleration of the construction of UHV backbone network grids. Zhang Zhengling, a spokesperson for the State Grid Corporation of China, said that UHV is characterized by greater transmission capacity, longer transmission distances, lower losses, and significant savings in transmission corridors.

“Using UHV channels, we send coal, electricity, and wind power, as well as wind, light and fire.” According to the plan, according to the plan, during the “Twelfth Five-Year Plan” period, the UHV AC line planned and constructed by the State Grid will be "Three vertical and three horizontal", DC 15 times. The starting points of “three vertical and three horizontal” are all planned in the five comprehensive energy bases identified in the national “Twelfth Five-Year Plan” outline, including Xinjiang, Shanxi, Mengdong, and Ordos regions rich in coal and wind power resources (Ningdong, Northern Shaanxi, Mengxi) and southwestern regions rich in hydropower resources.

Industry Chain Opportunities Under the backdrop of the rise of smart grids as a national strategy, the prospects of smart grid related industries are gradually clear. “In the field of smart grid key equipment, we have promoted the research and development of smart key equipment.” Wang Yimin, director of the Ministry of Science and Technology of the State Grid Corporation of China, believes that this is a major achievement in China’s smart grid construction.

From the beginning of the world's first ultra-high voltage transmission line Changzhi - Jingmen UHV AC line, the State Grid has taken the lead in the world to master the UHV high-capacity transmission system integration technology, and for the first time successfully developed UHV series, high-capacity UHV switches. New ultra-high voltage AC equipment, such as two-column UHV transformers, has an integrated localization rate of more than 90%.

There is no doubt that China today is the world’s largest demanding country for smart grids. Related industries will soon become the world's largest industry in this area. "The entire UHV test demonstration project and the UHV expansion project, all equipment are all domestic enterprises, we have completely independent intellectual property rights." Zhang Zhengling said.

“Some of the companies have already gone out of the country and exported a lot of equipment.” According to related people of the China CEC, China’s rapid progress in smart grids and the completion of the UHV have increased the recognition of Chinese technology by its foreign counterparts. It was helpful to go out. "The transformation of India's power grids has bought a lot of equipment from Chinese manufacturers."

Standards leading US Ambassador to China Gary Locke believes that the fragmented development of smart grids will result in the loss of economies of scale. This will make some key product markets smaller and cost more expensive; and some countries can use their own technical standards to build non Tariff trade barriers not only hinder trade but also threaten innovation. It has become a global consensus that the development of common specifications and the harmonization of smart grid standards around the world. However, what standard is used to unite the world is a problem.

On September 30, 2010, the National Energy Administration, the National Standardization Management Committee, and relevant units established a promotion group for the overall work of the national smart grid standardization. "The national smart grid standard construction work rules (discussion draft)" clearly stated that this move is intended to accelerate the construction of smart grid standards system, ensure the formulation and implementation of smart grid standards, and promote China's substantial participation in smart grid international standardization activities.

The promotion team has been doing two aspects of work: on the one hand, adopting the standard, importing and adapting international standards suitable for China, and translating it into a Chinese standard; and, where appropriate, submitting a proposal to the International Electrotechnical Commission to apply for Chinese standards to become international standard.

“There have been more than 10 international standard proposals that have been applied for,” and “an important aspect of China’s smart grid construction achievements is the introduction of a comprehensive technical standards system. Under the guidance of this standard system, a large number of smart grid projects have been developed. The standard," said Wang Yimin. In the 2011 International Forum on Smart Grids, Wang Yimin used an idiom in his English-language speech on the development of China's smart grid, which was better than words.

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