Ultra high-voltage development of trillion-dollar cake to share

Editor's note: It is reported that the State Grid has reported the “12th Five-Year Plan” for UHV power grids to the National Energy Administration, providing reference for the formulation of a national-level “12th Five-Year Plan” for power grids. According to the plan of the State Grid, by 2015, the regional power grids of North China, East China and Central China will be connected through UHV AC grids to form a “three vertical and three horizontal” “Sanhua synchronous power grid”, which will be completed by 2020. Horizontal pattern. UHV "12th Five-Year" plan passed, will greatly promote the development of China's UHV industry, the market size of more than one trillion, for UHV companies, is expected to usher in "special high-speed" development.

UHV construction in dispute before the smart grid to start an unnamed brokerage analyst to the "Securities Daily" reporter said that the management of the UHV grid is still cautious.

From the moment the development of the smart grid was listed in the “Government Work Report - 2012 Major Tasks,” people felt the management’s determination to build a smart grid.

According to the “Government Work Report 2012”, in 2012 China must strengthen energy management, develop smart grids and distributed energy, and implement effective management methods such as energy-saving power generation dispatch, contract energy management, and government energy conservation procurement. Optimize the energy structure, promote the clean and efficient use of traditional energy sources, develop nuclear power safely and efficiently, actively develop hydropower, accelerate shale gas exploration and development, and increase the proportion of new energy and renewable energy. Strengthen the energy channel construction. We will thoroughly implement the basic national policy of resource conservation and environmental protection. To carry out energy conservation certification and energy efficiency label supervision and inspection, encourage energy saving, water saving, land saving, material saving and comprehensive utilization of resources, and vigorously develop circular economy.

It is not difficult to see that the development of smart grids has not only been ranked first in energy use management, energy conservation and emission reduction, but also as one of the important foundations for increasing the proportion of new energy and renewable energy and developing a circular economy.

According to the “Opinions on Accelerating the Construction of Strong Smart Grids” issued by the State Grid in 2010, the “Strong Smart Grid” will be planned and constructed in three phases. First, 2009-2010 is the pilot phase of planning, focusing on planning; Second, 2011-2015 is a phase of comprehensive construction to speed up the construction of the “Three China” UHV synchronous grid in North China, East China, and Central China, and initially form a smart grid operation. Control and interactive service system; Thirdly, 2016-2020 will lead the upgrade phase and build a unified “strong smart grid”.

What kind of vitality will such a grand plan inject into our economy? State Grid predicts that by 2020, the total investment in smart grid will be close to 4 trillion yuan. Wu Jiandong, chief energy expert of the Chinese Academy of Sciences, once pointed out that smart grid construction will drive GDP by one percentage point each year.

The development of UHV power grids to speed up The strong smart grid proposed by the national grid can be simply understood as follows: UHV grid plus smart grid equals strong smart grid. According to the national grid plan, the UHV power grid is the backbone grid of the strong smart grid.

The so-called UHV refers to the exchange of 1000 kV and above and DC positive and negative 800 kV and above the voltage level, and UHV grid, as its name implies, can be faster, more, and more distant transmission of electricity.

The data from the State Grid shows that the construction of UHV power grids can greatly increase the transmission capacity of China's power grids. The UHVDC power grid of the primary loop can deliver 6 million kilowatts of electricity, which is equivalent to 5 to 6 times that of the existing 500 kV DC grid, and the power transmission distance is also 2 to 3 times that of the latter, so the efficiency is greatly improved. In addition, according to calculations by the State Grid Corporation of China, the transmission of power of the same power can save 60% of the land resources if the UHV transmission line is used instead of the 500 kV EHV line.

In fact, for the pros and cons of UHV, the industry is also a wise man seeing the wisdom of the beholder, but no matter what, in March 2011, the construction of UHV power grid was included in the “Twelfth Five-Year Plan”. The "Outline" clearly points out that China must adapt to the requirements of large-scale cross-regional transmission and new energy generation and grid connection, accelerate the construction of a modern power grid system, further expand the scale of West-to-East power transmission, improve regional backbone power grids, and develop UHV and other large-capacity and high-capacity systems. Efficiency, long-distance advanced transmission technology. The inclusion of the "Twelfth Five-Year Plan" means that the construction of the UHV power grid has risen to the national strategic level.

As the unyielding supporter of the UHV power grid, the State Grid quickly completed the “12th Five-Year Plan” for UHV power grids earlier this year. It is reported that the plan has been reported to the National Energy Administration.

However, in February of this year, 25 experts including Jiang Zhaozu, former director of the State Planning and Economic Commission, and Shen Gencai, deputy chief engineer of the Ministry of Water Resources, jointly submitted reports to the Party Central Committee and the State Council. They again unequivocally opposed the exchange of electricity grid security and waste of resources. High-voltage "Sanhua Power Grid" planning.

An analyst, who declined to be named, told the "Securities Daily" reporter that it should be noted that the UHV grid did not appear in the 2012 government work report. This shows that management is still cautious about the UHV grid. Therefore, before the “12th Five-Year Plan” of the UHV power grid of the State Grid was approved, the variables still existed.

New energy development will be supported If there are still surviving variables in the construction of ultra-high voltage power grids, smart grid construction is in full swing.

The so-called smart grid is the intelligentization of the grid. It is also called the grid 2.0. It is based on an integrated, high-speed two-way communication network. It adopts advanced sensing and measurement technologies, advanced equipment technologies, and advanced control methods. And the application of advanced decision support system technology to achieve the grid's goals of reliability, safety, economy, efficiency, environmental friendliness, and use safety. Its main features include self-healing, motivating and including users, resisting attacks, and providing 21st century user needs The power quality, access to a variety of different forms of power generation, start-up power markets, and asset optimization and efficient operation.

The inevitable effect of stimulating economic growth with smart grid construction is remarkable. The trillion-yuan “feast” will also create excellent development opportunities for upstream and downstream industries. However, what is more significant than this is to increase the proportion of new energy and renewable energy, and develop a recycling economy.

Just as the State Grid interprets the “Government Work Report for 2012”, “Building a smart grid is an effective means to improve energy regulation and utilization efficiency. Smart grids with informatization, automation, and interactive features are used as energy-saving and environmental-friendly, high-end equipment manufacturing. The closely related system engineering of new energy vehicles is an important support for China's strategic emerging industries, and it plays an important supporting role for the development of low-carbon economy and clean energy, and has become the development trend of the world's power grids."

As we all know, the instability of wind energy and solar energy poses an impact on China's power grid, which is currently the biggest obstacle to the integration of new energy generation in China. As a new-generation power grid built on the basis of integrated, high-speed two-way communication networks, the smart grid achieves reliable, safe, and economical power grids through the application of advanced sensing and measurement technologies, equipment technologies, control methods, and decision support system technologies. Efficient, environmentally friendly and safe to use goals. It is considered to be the most effective means to resolve this contradiction so far.

The smart grid benefits many industries and, apart from the new energy industry mentioned above, many industries will be given opportunities to develop under the stimulation of the trillion-dollar "success" of the smart grid.

The biggest gain is the subordinate enterprises of the national grid. It is understood that the State Grid will complete a strong smart grid investment of more than 300 billion yuan in 2012, and it is expected to solve the electricity problem of more than 400,000 people without electricity. Among them, it will focus on core technologies and key equipment to carry out research, it is estimated that the annual research and development funds will reach 8 billion yuan.

Zhao Yongzhi, general manager of Shandong Electric Power Equipment Co., Ltd., said that at present, China has formed a full set of domestic production capacity for UHV power transmission and transformation equipment, and the integrated localization rate of equipment has reached 90%. Domestic related companies that have mastered market dominance will undoubtedly benefit from the investment in the national grid.

In addition to increasing R&D expenditures, the State Grid has correspondingly increased the production capacity of its subordinate enterprises. Taking the Jinan Industrial Base of CEC as an example, the base of more than 2,700 acres is the largest industrial base in the domestic similar parks. The base mainly develops and produces UHV AC transformers, converter transformers, reactors, UHV and GIS voltage levels, smart meters, electric car battery packs, and special new materials for power transmission and transformation. After the industrial bases are all completed, the production capacity of China Electric Power Equipment Shandong Power Equipment Co., Ltd. will increase by about 5 times.

In addition, a smart grid based on an integrated, high-speed, two-way communication network will enable the rapid growth of investment in power informatization in 2011-2015.

According to CCS estimates, the scale of IT investment in the smart grid field in 2011 was approximately RMB 6.03 billion, an increase of 38.4% over the previous year, indicating a rapid growth trend. With the gradual development of smart grid construction projects, IT system procurement will also enter a rapid growth period in 2013 after a relatively stable growth in 2011 and 2012. By 2015, the IT scale of the power industry will reach 35.8 billion yuan, and the compound growth rate from 2010 to 2015 will be 12.7%.

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