"Twelfth Five-Year Plan": The Key Five Years of Smart Grid Development

China's development of smart grids faces many challenges. The existing management system, price mechanism and pricing method must be changed

Although the "smart grid" is still a new term for many people, the new enthusiasm in this energy field will certainly bring about qualitative changes in related industries and change our future life.

According to the goal of “building a strong smart grid in 2015” proposed by the State Grid Corporation of China earlier this year, the strong smart grid is no longer far away from us. We can also infer that the "12th Five-Year Plan" period will be the key five years for accelerating the construction of smart grids.

Bright prospects

In May 2009, State Grid Corporation of China officially released a strong smart grid development strategy at the 2009 International Conference on UHV Transmission Technology, and put forward the concept of a "strong smart" grid. In March 2010, Premier Wen Jiabao formally proposed to “strengthen smart grid construction” in the “Government Work Report.” The concept of smart grid has gradually become a social consensus. At present, smart grid construction has been incorporated into the Twelfth Five-Year Plan for National Economic and Social Development.

What is “Strong Smart” Grid? Dr. Xiaolian Luo of the Institute of Smart Grid of State Grid Energy Research Institute explained that the “strong intelligence” network is based on the strong grid of UHV grids as the backbone grid and coordinated development of all levels of grids. Supported by communication information platform, it is characterized by information, automation, and interaction, including power generation, transmission, transformation, distribution, power supply, and dispatch of power systems, covering all voltage levels, and realizing "power flow, information flow. , business flow "a highly integrated modern grid. Among them, "strong" and "smart" are two basic requirements of a modern power grid. "Strong" is the foundation, and "smart" is the key. The two complement each other.

"Strong smart" grid is an inevitable choice for higher economic and social development of the grid.

First, with the sustained and rapid economic and social development, China's electricity demand will maintain rapid growth over the long term. It is expected that China's installed capacity and electricity use will be doubled on the current basis in 2020, which means that the scale of the new power grid in the next 10 years will be equal to the scale of power grid construction in the 60 years since the founding of the People's Republic of China. Different from the developed countries in Europe and America where the grid size has been basically stable, the development of China's power grid must simultaneously address the expansion of volume and qualitative leap. Therefore, China's smart grid must be based on a strong grid network and provide a solid foundation for a higher level of intelligence in the power system.

Second, due to the adverse distribution of China's energy resources and productivity, China needs to implement large-scale, long-distance, and high-efficiency transmission of electricity in order to meet the continued growth of electricity demand in the future. It is necessary to implement large-scale, long-distance, high-efficiency transmission of electricity, and large coal-fired power, large hydropower, large nuclear power, and large-scale renewable energy. The intensive development and utilization of energy bases has led to the formation of a nationwide optimized allocation of resources. This objective requirement must transform the existing grid so that it is both "strong" and "smart".

Finally, with the advancement of science and technology and the continuous improvement of informatization, electric vehicles, smart devices, smart home appliances, intelligent buildings, intelligent transportation, and smart cities will become the future development trend. Only by building a smart grid can we meet the needs of economic and social development for electricity, so as to meet the diversified, personalized and interactive demands of customers on power supply services.

It is understood that by building a strong smart grid, renewable energy will be intensively developed, large-scale, long-distance transmission and efficient use, and the energy structure will be improved. In addition, by building a strong smart grid, it is possible to realize the integration of various types of centralized, distributed power, energy storage devices, and electrical facilities, standardization of grid-connected access, and intelligent control of grid operations, and to improve the operational efficiency of power system assets and the energy efficiency of the entire society. .

According to Jiang Kejun, a researcher at the Energy Research Institute of the National Development and Reform Commission, the most important significance of the smart grid to China is to lift the bottleneck of China's green power development and vigorously promote the development of green power. After the smart grid is put into use, due to the intelligent control, the difficulties in integrating wind power and solar power into the grid will be completely solved, which will greatly promote the development of green power in China. By 2020, smart grid technology will help power companies reduce carbon dioxide emissions by 14%.

Lou Xiaoling pointed out that the strong smart grid is a knowledge-intensive and technology-intensive industry, and has an important driving and leading role in traditional electric power-related industries and strategic emerging industries, especially new energy, energy conservation and environmental protection, new energy vehicles, and information industries. Strategic emerging industries. Smart grid can not only provide huge market demand, promote the scale development of related industries, but also promote related industries through independent innovation, master core technologies, reduce product costs, increase the localization rate of core equipment and key components, and improve international competition. Strength, and then expand the international market.

Smart grids have a promising future. This has also been verified by the experts and industry insiders interviewed by reporters.

Trends and goals

“As the construction of an information society, smart grids are a trend and a goal for the future development of the power grid.” Yuan Ying, a senior consultant of CCID Consulting's Energy Industry Research Center, said in an interview with the reporter that it is a phased process to fully realize the smart grid. A hierarchical process. This process is not only affected by policies, investments, etc., but also includes the maturity, economics, and power grid infrastructure of the technology as well as the electricity consumption habits of the entire society and the development of related industries. This process may take 10 years or more.

"Today, the development of smart grids does not begin with 'zero'. After many years of development, China's power grids have already reached a certain level of automation and informatization. Some of the grid technologies and equipment are already at the leading international level, laying the foundation for the development of smart grids. Good foundation, the future is a new stage of rapid improvement in the level of intelligence.” Guo Xiaoling, Institute of Smart Grid Research, Dr. Xiaoling told reporters: In order to achieve the healthy and sustainable development of China's smart grid, the national power grid to promote the intelligent construction of the power grid in a steady manner. Among them, the previous trial period of 2009-2010 is the phase of planning and the period of 2011-2015 is the comprehensive construction phase, and the period of 2016-2020 is the leading phase of improvement.

So, what exactly is the smart grid built in 2015?

For the State Grid Corporation's goal of basically building a strong smart grid in 2015, Yuan Ying said that "should be more detailed interpretation and description." There are also some experts who are unclear about the definition of a basic smart grid.

Dr. Xiaoling Xiao opened up a mystery for reporters. She told reporters: “Through 2015, we will initially form a strong smart grid operation control and two-way interactive service system; we will basically realize friendly access and coordinated control of renewable energy such as wind power and solar power generation; the power grid will optimize the allocation of resource capabilities and safe operation levels. The user's diversified service capabilities have been significantly improved, and power supply reliability and asset utilization have improved significantly. The smart grid technology standard system has been basically completed, key technologies and key equipment have achieved major breakthroughs and widespread applications; smart grid benefits have preliminarily emerged, and the national grid has reached an international level of intelligence Advanced level."

It should be said that 2015 is just a timeline for the establishment of a strong smart grid, which is not the end point.

Yuan Ying told reporters: During the “12th Five-Year Plan” period, it was the second phase of the strong smart grid, which is the comprehensive construction period. Compared with the first phase of the pilot program, all aspects of the smart grid will enter the substantive construction phase during this period. Therefore, the resources that the grid company invests in the smart grid construction will be very rich at this stage, and should be used in technical standards and key equipment. There is a relatively wide range of applications, and all links can be coordinated to achieve the goals of the State Grid Corporation's planning at this stage.

Lou Xiaoling told reporters: "In the period of the 13th Five-Year Plan (2016-2020), the State Grid will evaluate construction performance on the basis of comprehensive construction, and combine application requirements and technological development to further improve and enhance the comprehensive level of the smart grid. Leading the technological development of the international smart grid, by 2020, a strong smart grid will be fully established, and the national grid will be internationally advanced in intelligence, and the overall benefits of the smart grid will be fully realized.”

In order to ensure the realization of the smart grid development goals, the State Grid Corporation of China has completed the “Twelfth Five-Year Plan” smart grid planning, and clarified the construction of smart grid key projects, the development of key equipment, and the development of technical standards during the 12th and 13th Five-Year Plan period. Staged goals. In the key projects of intelligent network construction, through the six major links of the power grid and communication information platform, smart substations, power transmission and transformation equipment status monitoring, power distribution automation, power consumption information collection, electric vehicle charging facilities, power fiber to the home, etc. 24 Smart key project construction. Regarding the construction of smart grid technology standards, the 26 technical areas and 92 standard series of smart grid technology standard systems have been accelerated to promote the construction of technical standards, rolling revisions of existing standards, supplementing the development of required standards, and constantly improving the standards system and promoting Internationalization of Smart Grid Standards in Advantageous Areas. In the development of key equipments (systems) for smart grids, 137 key equipment developments are focused on in 7 technical fields and 28 technical topics. Improve the performance of existing key equipment, expand the scope of promotion and application; accelerate the progress of research and development of equipment, strengthen demonstration applications, and create production capacity.

A lot of problems

"The smart grid, despite its good prospects, is conducive to the development of clean energy and the promotion of energy conservation and emission reduction, it is still full of uncertainties," Lin Boqiang, director of the China Energy Economic Research Center at Xiamen University, told reporters.

Because at what speed the smart grid develops depends on many factors, such as investment intensity, technical difficulties, development progress of UHV and interactive electricity, and the development speed of clean energy. Who pays the bill is also a big problem, because the cost of power grid construction plus the cost of solving clean energy such as wind power, solar power generation, and grid connection are all huge.

“The conditions are not the same in all aspects and the industrial maturity is not the same. The development of smart grids is not a purely electric power company's decision.” Yuan Ying told reporters: The development of smart grids must be affected by policies, technology research and development, and other aspects, not only enterprises. Behavior should also be social behavior. The development of smart grids is subject to the development of related industries such as transformers, automation equipment, power grid infrastructure, and information and communication software related to smart grid applications.

There are some smart grid demonstration communities but there is no promotion. There are not only technical problems, but also large investment and high cost of use. Because the smart grid has changed the pattern of energy supply and application, it has shifted from a traditional one-way mode to a two-way interactive mode. Faced with new models, such as the application of smart meters, the society will accept it and how it will accept the ability to adapt.

The planning of the smart grid must be involved in every link, and it must be coordinated development of all links. UHV is part of a strong smart grid. Ultra-high voltage, high-voltage power grids, and urban and rural low-voltage distribution networks are also part of a strong smart grid. All levels of power grids must coordinate development. Because only the main network is intelligent and there is no intelligent distribution network, the smart grid does not work. It is impossible to intelligentize a link and it is called a smart grid.

There are smart grid conditions, there will be power distribution end reverse access. For example, some users have solar power that they wish to merge into the grid and sell excess electricity. This will place very high demands on the smart grid. At present, the development speed of the smart grid will not be as fast as possible. We must consider its impact on the power grid, consider the national conditions and future development strategies, and implement it in steps.

Qi Zhiping, a researcher at the Institute of Electrical Engineering of the Chinese Academy of Sciences, said that China's development of the smart grid is facing many challenges. The existing management system, price mechanism, and pricing method must all change, and power grids and communication networks must be integrated. The smart grid involves the transformation of the power system as a whole. It needs the coordination of various industry organizations and the support of funds and policies.

Need multiple support

“The construction of smart grid is a long-term and complicated system engineering, which cannot be separated from the participation and promotion of various stakeholders.” Dr. Xiaolian Zhu of the State Grid Energy Research Institute told the reporter: Strong stakeholders of smart grids cover the entire industrial chain of the power system. And the government, equipment and service providers, financial institutions, scientific research institutions and other aspects, and the interests of various stakeholders have their own focus. Therefore, it is extremely important for the development of smart grids to build consensus, increase synergy, and establish a sound and coordinated cooperation mechanism that promotes win-win cooperation.

To build a strong smart grid, we must play a leading role for the government and form a new pattern of joint efforts to build a smart grid. Realize the coordinated development of the power grid intelligence and the physical power grid, realize the coordinated development of power generation, transmission, power transformation, power distribution, power supply, and dispatch, and realize the coordinated development of strong smart grids and related industries. The smart grid covers many areas and involves many industries. It also requires cooperation and collaboration among power grid companies, power generation companies, equipment manufacturing companies, research institutes, and consumers.

Lou Xiaoling told reporters that in the face of the recent series of strategic measures introduced by developed countries such as Europe and the United States, if we react slowly and misuse our measures, we may lose this rare strategic opportunity. We must give full play to China’s advantages in the national system, highlight the leading role of the government, establish an effective cross-industry communication platform and cooperation mechanism, and jointly promote the rapid development of smart grids.

Government departments should step up efforts to formulate macro guidance policies and play a leading role in their incentive policies, standards, overall plans, and coordination organizations. Guide the power grid companies to play a role in leading technology, build platforms, and scientific dispatch to meet the requirements for clean energy access and energy conservation and emission reduction. Promote power generation enterprises to actively develop clean energy power generation, adopting “system-friendly technology” to ensure normal and efficient operation of the system. For other industries and scientific research institutions, encourage active participation in the relevant standards for smart grid development, core technology research, key equipment R&D and demonstration project construction. Guide the power users to actively change their consumption concepts and habits of electricity consumption and actively participate in the two-way interaction of the smart grid.

To gradually form a government-led, multi-party actively participate in a concerted effort to promote the development of China's smart grid new pattern, in order to lay a good smart grid construction battle.

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