Standard internationalization promotes the development of China's power grid

Before this, the 2013 International Smart Grid Forum was held in Berlin, Germany. More than 500 representatives from more than 40 countries in Asia, Europe, North and South America, and Africa will use the new energy revolution as an opportunity to accelerate energy transformation and ensure energy conservation. Safe, high-efficiency, clean supply, and promotion and promotion of smart grids have been discussed and exchanged. The chairman of the International Electrotechnical Commission, Klaus Wuerer, said at the meeting: “At present, China’s smart grid technology is the world leader, and China’s UHV AC voltage will be promoted to the world as an international standard.”

Smart grid is the common goal of the world grid. Germany is the first major industrial country to abandon nuclear power. Currently, it is vigorously developing renewable energy. It is estimated that by 2020, the proportion of renewable energy in Germany's energy consumption will increase to 35% by 2050. Increased to 80%; Japan's Fukushima nuclear leakage incident, the urgent need to change the energy structure, which will require the introduction of more renewable energy; France is building a smart city, the implementation of social resources networks such as power supply, water supply, gas supply, garbage disposal Unified management... In recent years, the scale of world energy development and utilization has been continuously increasing, new energy continues to develop rapidly, and the diversification of energy structure is evident. For this reason, all countries in the world have accelerated the construction of smart grids to meet the challenges brought about by the transformation of energy strategies.

The chairman of the German Electrical Engineers Association, Josh Schneider, pointed out: "The smart grid is like a road and organizes virtual power plants, smart mobile devices and smart homes." With the development of social economy, the function and shape of the power grid is undergoing profound changes. The traditional transmission network is shifting to a comprehensive allocation of resources such as energy, industry, and information to promote the smart grid of smart homes, smart transportation, smart communities, and smart cities. It can be said that the smart grid has become the key link and important feature of the new round of energy revolution.

At the same time, taking a close look at the history of the development of the world's power grids, we followed the objective law of the voltage level from low to high, the scale of networking from small to large, and the ability to allocate resources from weak to strong. Therefore, the concept of the smart grid and the deepening of its construction and application will bring the development of the world power grid into a new historical stage.

Liu Zhenya, chairman of State Grid Corporation of China, pointed out at the meeting: “Strong smart grid is a powerful platform for energy conversion, efficient configuration, and interactive services. It is a modern grid tightly integrated with strong grid and intelligent control. It covers electricity generation, transmission, and transformation. Intelligent power systems for all aspects of distribution, electricity use, and dispatch.The development of a strong smart grid has enormous economic value, social value, and environmental protection value, is a strategic choice for achieving sustainable energy development, and is a common goal for the development of the world power grid."

At the world leading conference on smart grid technology in China, it was revealed that the technical route, work priorities, and specific measures for the development of smart grids in various countries are not exactly the same.

Among them, Germany's smart grid is a combination of different professional technologies and actively carries out cross-sectoral, cross-industry, and cross-border cooperation. It plans to build a new 140,000 km long distribution network by 2020, when the German renewable energy will have 97% Above access distribution network. At the same time, Germany will strengthen the construction of the transmission grid and transport wind power from the North Sea to industrial areas in the west and south.

For the smart grid in the United States, George Arnold, Director of National Institute of Standards and Technology Research in the United States, said: “In order to eventually build a smart grid, the White House has formulated four pillars of policy: Smart grid investment must benefit consumers and electricity consumption must be extensive. Nationals can afford it; some new technologies will continue to tap new potential in order to provide a truly reliable energy supply over the next 100 years; use these technologies to make energy recyclable; a range of technologies must be used to meet safety requirements. "The benefits of the current smart grid are already showing up in the United States. For example, the average power outage time has been reduced by 20%.

EDF is committed to cooperating with government agencies to encourage distributed photovoltaics to be connected to the grid, and to promote smart meters, to guide customers to apply more intelligent power technologies, smart power management, and effectively improve energy efficiency. In Japan, the government encourages private companies to develop and use renewable energy, and helps companies and universities conduct early research and development of new energy, prompting different stakeholders to jointly promote the development of smart grid pilot projects.

In order to support the transformation of energy, China's smart grid construction has also achieved a series of results. Up to now, the State Grid has built two 1000-kilovolt UHV AC and two ±800 kV UHV DC projects; 220 smart substations have been built, and a new generation of smart substations are being built; 150 million smart meters have been installed to realize customer electricity use. Nearly 160 million people have collected information; 353 electric vehicle charging and switching stations and 15,000 charging piles have been built... Klaus Uhler pointed out that “China's smart grid technology is currently the world leader.”

The internationalization of standards will promote the promotion of smart grids. Representatives believe that many countries in the world have made many breakthroughs in the development of smart grids. However, at the same time, it is not enough to build smart grids with only technical solutions. It is also necessary to establish smart grids as soon as possible. The standard system covers services, equipment, and other related contents. This will require strengthening international exchanges and cooperation in order to reach consensus.

Johim Schneider pointed out: "Different international standards need to coordinate with each other, and individual countries cannot solve the problem of the development of smart grids. At the same time, standardization is also conducive to guaranteeing investment security and benefiting all countries. Therefore, countries need to improve legislation and promote The standardization of smart grids promotes mutual exchanges.” Deputy Director of the Ministry of Economy, Trade and Industry's Bureau of Benchmarking and Certification, An Yongyu, also believes that: “The smart grid is composed of different system interactions. In order to achieve safe and stable operation of smart grids, it is urgent to build a standard system for smart grids. , especially the international standard system."

Francois Foglela, Director of the Renewable Energy Department of the French Electric Power Company, introduced more specific: “The grid includes different partners, and we hope to build a higher automation level, more interactive and reliable power supply in Europe. Higher smart grids, however, are currently subject to EU regulations, restrictions on subsidies, etc. Only under the guidance of a unified standards system, can electricity companies and equipment manufacturers in all countries work together to effectively accelerate the construction of smart grids. ."

China has occupied an important position in the construction of the smart grid international standard system. China's UHV AC voltage will be promoted to the world as an international standard. In this regard, Klaus Wuerer pointed out: "Since many countries in the world have uneven distribution of energy resources, China's UHV technology will have a wide range of application prospects." Liu Zhenya said: "The construction of smart grids in various countries The overall goal and direction are the same. China State Grid is willing to work with all of your peers to jointly promote the innovation and development of a strong smart grid."