Where does China's smart grid go?

The “White Paper on China's Smart Grid Information Technology System” released on July 19, 2011 pointed out that in the process of gradual deepening of smart grid construction, the traditional grid business model is facing challenges of reform, and the company’s production, management, and business operations will continue to trend. Fusion innovation. The reform and innovation of smart grid business put forward higher requirements on the application of information technology. Information technology not only needs to provide support for the development strategies and various business areas of grid companies, but also needs to be an important engine for enterprise business innovation, leading the traditional business of grids to smart The direction of information and information.

Since the State Grid Corporation of China first proposed the construction of a "strong smart grid" in 2009, China's smart grid construction has gradually moved from exploration to comprehensive development. During the “Twelfth Five-Year Plan” period, power grid companies placed greater emphasis on the importance of information technology in the long-term strategic development of power grid companies. In 2010, the State Grid Corporation of China proposed to provide comprehensive services and support the company’s smart grid construction. In 2011, China Southern Power Grid Corporation The development idea of ​​“a more intelligent, efficient, reliable, and green direction change of the power grid and the transformation of enterprise management toward leanness” is proposed, and “emphasizing the use of information technology to comprehensively enhance innovation capabilities”.

Smart Grid Highlights Convergence and Innovation White Paper believes that under the smart grid, the business will evolve from the isolation and dispersion of the traditional grid model to the direction of collaborative innovation. Under the dual impetus of technology leadership and business integration, large-scale renewable energy will be connected to the grid and electric In the new business areas such as car charging stations/pile management and interactive marketing, the entire power grid business will exhibit significant fusion innovation characteristics. Under the smart grid, important changes will take place in the business system and new requirements will be put forward for information technology. Information technology needs to provide a platform for highly shared information in various business areas of the smart grid, providing support for the collection, analysis, and advanced application of all the grid's panoramic information, and promoting highly integrated information and deep integration of services at all levels and levels of the power grid.

CCID Consulting researched and proposed the smart grid information technology architecture. The technical architecture can be divided into four layers and two vertical layers. The four layers refer to the data collection layer, infrastructure layer, information integration layer, and application presentation layer respectively. Grid information security protection system and grid information standard system. Each hierarchical system proposes more targeted technical content based on the characteristics of the smart grid.

2011: In the coming years of the domestic smart grid, according to the national grid company's smart grid construction plan, the development of the smart grid in China will be gradually advanced in three phases. From 2009 to 2010 for the pilot phase of the study, it will focus on the development of strong smart grid planning, formulate technical and management standards, carry out key technology R&D and equipment development, and trials for all links; the comprehensive construction phase will accelerate from 2011 to 2015. UHV power grids and supporting urban and rural power grids will initially form a smart grid operation control and interactive service system, and key technologies and equipment will achieve major breakthroughs and wide application; from 2016 to 2020, it will lead the upgrade phase and will build a unified and strong smart grid. Technology and equipment have reached the international advanced level. The total investment in smart grid construction is expected to exceed 4 trillion yuan.

According to the plan of the State Grid, 2011 is the first year for the smart grid to enter the stage of comprehensive construction, and it is also the year after the start of the past. On the one hand, all kinds of pilots of the smart grid will continue to be fully rolled out last year; on the other hand, the various standards of the smart grid will also be introduced intensively.

In March of this year, State Grid announced that it will promote the construction of 11 types of smart grid pilot projects in 2011, of which 67 will be built; the distribution automation system will be built in the core areas of 19 cities; 50 million smart meters will be promoted and applied; Block electric vehicle charging and swapping station and 9211 charging piles; completed 25 smart communities/buildings construction; promoted the construction of 62,000 households of fiber-optic power to households; completed the construction of a smart grid integrated demonstration project of China-Singapore Tianjin Eco-City; accepted 20 million kilowatts of wind power capacity ; Formulate 88 smart grid standards.

In terms of China Southern Power Grid Corporation, the company has always attached importance to the research and application of new technologies, based on the "strong, innovative, and leading" development ideas and the guiding ideology of "enhancing the reliability of power supply as the overall leader", and has been protecting and providing flexible transmission over the Internet. Digital substations, distributed energy supply systems, new energy and renewable energy are quickly and flexibly connected to the power grid, energy-saving dispatch, comprehensive control of power generation equipment with different characteristics, stability control of AC-DC power grids, and improvement of intelligentization of distribution networks and improvement of the load side of terminals A lot of effective explorations have been made in terms of scientific management and improvement of energy-saving and emission-reduction levels in the entire society, which has played an active role in promoting the digital and intelligent construction of the power grid.

In July 2010, China Southern Power Grid deployed smart grids and other work during its half-year work forum. China Southern Power Grid will grasp the direction of smart grid development from a strategic perspective and vigorously promote the research and construction of smart grids. In the area of ​​smart grid construction, we will follow the principle of "demand guidance, overall planning, orderly advancement, and key breakthroughs." We will use advanced computer technology, communications technology, and control technology to build an intelligent, efficient, and reliable solution covering urban and rural areas. Green power grid. The construction goals of the company's smart grid are: to improve the level of safe and stable operation of power systems, improve the efficiency of system and asset utilization, improve the level of energy efficiency management and quality services at the user side, and improve the ability to optimize resource allocation and efficient use, and promote resource-saving and environment-friendly The construction and development of a social society.

Links to the current status of smart grid development in foreign countries Currently, resource and environmental issues have become the focus of attention of all countries in the world, and global calls for environmental protection, energy conservation, emission reduction, and sustainable development are increasing. In recent years, European and American countries have taken the lead in putting forward the concept of "smart grid" and conducted related research, which has aroused widespread concern in the power industry world. Smart grids have gradually become the trend of modern grid development. There are two main driving forces for the development of smart grids in foreign countries: the first is to solve energy security and environmental protection issues and respond to climate change. Efforts to develop clean energy and electrified transportation are important ways for developed countries to achieve energy independence, ensure energy security, protect the environment, and respond to climate change. The second is to seize the commanding heights of the industry and create new economic growth points. The relevant research of the Galvin Power Action Plan in the United States pointed out that the promotion of smart grid technology can create many new economic growth points. It is expected that the large-scale deployment of distributed generation and energy storage technologies will bring 10 billion U.S. dollars to the United States by 2020. USD/year economic growth (estimated by 10% of total installed capacity in 2020). The KEMA, a multinational consultancy in the Netherlands, predicts that the smart grid project will directly create approximately 280,000 jobs within the United States between 2009 and 2012.

Due to different national conditions, the foundations and priorities for the development of smart grids vary from country to country. On the basis of the development of smart grids in various countries, the grid facilities of some countries in the United States and Europe are obsolete and need to be upgraded through the grid to improve system reliability and avoid the recurrence of similar accidents such as the 8.48 blackout in the United States and Canada and the 11.4 blackout in Europe; In fact, the automation level of its power system is relatively high, and its reliability and efficiency have reached a relatively high level. However, the lack of fossil energy in Japan focuses on improving the power grid's ability to accept new energy sources. Regarding the problems that the development of smart grids in various countries has focused on in the near to medium term, the United States mainly focuses on increasing investment in existing network infrastructure, actively developing clean energy, promoting pluggable hybrid vehicles, and achieving distributed power and energy storage. Grid-connected operation; Europe focuses on research and resolution of grid-connected wind power, especially large-scale off-shore wind power consumption, distributed energy grid-connected, demand-side management and other issues; Japan focuses on research and resolution of distributed photovoltaic power generation and wind energy Large-scale grid-connected power generation issues, as well as interactions between electric vehicles and the power grid.