"Four nets" or will come

Under the background of the U.S. and smart grid development being included in the national "Twelfth Five-Year Plan", we will accelerate the development of a strong smart grid and build a UHV "three vertical and three horizontal" structure connecting China's large-scale energy bases and major power load centers. Backbone grid. It is estimated that by 2015, the electricity grid covering 88% of China's land area will support 90 million kilowatts of wind power and 8 million kilowatts of solar power generation and access, protect 800,000 electric vehicles, and build a strong smart grid.

As the country’s important basic industry and public utilities, the stable development of the power industry and the improvement of its efficiency are related to the national economy and the people’s livelihood. At present, the new energy technology is in the ascendant, especially the smart grid has become the focus of attention of all parties. Hu Hongsheng, deputy director of the Information Center of the State Electricity Regulatory Commission, said that the smart grid is expected to become a new blue ocean for telecom operators, but it is limited by ideas, technologies, and other reasons. The telecommunications and power industries have reached large-scale cooperation and even realized grids, information networks and communications. The “three-network convergence” network still faces many difficulties. The first is security.

"Four nets" or will come

“In the National Twelfth Five-Year Plan, we clearly put forward plans to focus on the development of smart grids, which shows that the prospects for the development of smart grids are very good.” According to Hu Hongsheng, in the early days of the concept of smart grids, the national grid proposed the concept of four-network convergence. It is a convergence of four networks: broadcast television networks, the Internet, telecommunications networks, and smart grids. Although it failed to enter the triple play scheme in the end, the concept of power fiber-to-the-home access in the national grid was transformed into a "strategy to serve three networks at the same time as implementing a smart grid and reduce the implementation cost of triple play."

According to reports, the power fiber optic home is the use of fiber-optic composite low-voltage cable, to the realization of the table to the user, while providing electricity, to meet the smart grid power supply information, automation, interactive demand, the network speed of 20Mbps currently domestic city broadband The average speed of entering the home is 2Mbps. It can also realize the signal transmission of the same network of the telecommunication network, broadcast television network and the Internet, providing users with a more convenient and modern lifestyle.

Power fiber optic home has been formally incorporated into the smart grid project of the national grid. The introduction of power fiber to the home greatly reduces the implementation cost of the triple play, improves the integrated operational efficiency of the network, and has obvious advantages in energy saving and environmental protection. Taking Shanghai Electric Power Company as an example, the number of communication base stations has reached 8,500, covering an area of ​​6,000 square kilometers in the city. The number of backbone convergence points is twice that of Shanghai Telecom. At the same time, the power grid company already has 16,000 kilometers of power and optical cable resources, covering almost all residential communities. Comprehensive consideration of equipment, construction and other factors, the cost of power fiber network construction is lower than other operators by more than 30%.

In June 2011, the Lotus Garden District in Fengtai District of Beijing completed the functional transformation of the smart grid system and became the first smart grid community in China to operate for ordinary residents. According to information provided by the relevant personnel of the State Grid Information and Communication Co., Ltd., the use of the power of fiber to the home can provide a system based on smart electricity services, set broadband Internet access, smart home, home security, real estate services and high-definition video on demand. Comprehensive information service. This year, the State Grid will conduct power fiber pilot construction in 20 cities of 14 provincial companies, covering a total of approximately 47,000 users.

It can be seen that the State Grid intends to use the network platform that can provide voice, data, video and other services at the same time, join the triple play competition, and try to occupy a place in the development of the Internet of Things. Four-in-one and first-line use will greatly eliminate the visual pollution of black pollution caused by various types of transmission networks due to open lines. Composite power lines will never produce high-frequency electromagnetic radiation like PLC and other technologies. There is no series of intricacies. Technical issues and frequency control issues.

At present, the State Grid has cooperated with operators including China Mobile and China Telecom to launch various services, including wireless power meter reading, street light control, equipment monitoring, load management, smart inspection, and mobile information management. In terms of street lighting control, as the size of the city continues to expand, street lamp management and maintenance have become an important issue. The wireless street lamp monitoring program of the telecom operators can realize automatic alarming of the terminal, real-time transmission of alarm information to the responsible person's mobile phone, and remote control of the control center system; Anti-theft alarms; Street lights are remotely controlled according to weather, seasons, and unexpected conditions; voltage, current, and other parameter acquisition functions can help municipal departments effectively improve road lighting quality, ensure the overall lighting rate of the city and the equipment intact rate, avoid electrical energy, manpower and material resources. Needless to waste.

Experts believe that with the rapid development of science and technology, the power optical fiber access technology continues to mature, and it is a matter of course to enter millions of households, and the “four-network convergence” of radio and television networks, the Internet, telecommunications networks, and smart grids is also necessary. Will become a reality.

Cloud Computing Effort Smart Grid

In theory, the smart grid has formed the Tsinghua school of power system optimization scheduling. Prof. Wu Jiandong proposed a new theory of “interactive power grid”. The two major power grid companies actively carry out relevant research work. In practice, the two major power grid companies are rushing to deploy cloud computing strategies. The data center is based on virtualization technology to integrate resources, and at the same time it is building an integrated technology platform based on SOA architecture.

The State Grid built a smart grid cloud simulation laboratory. The mission of the project is to build a smart grid cloud computing center, focusing on smart grid cloud operation platform, smart grid cloud distributed database, smart grid cloud resource virtualization management platform, and ten typical applications based on smart grid cloud operation platform. Including cloud resource lease system, smart grid cloud search, smart grid cloud encyclopedia, cloud digital library, cloud patent search system, international cooperation business cloud application system, intelligent large-scale information storage and analysis of electricity, power video cloud and so on.

Researches have been carried out on "study on smart grid information support technologies", "study on smart grid information technology systems", "integrated research on smart grids and information technologies" and "advanced applications of cloud computing in the power industry". These are important components of research work on smart grids and cloud computing technologies. As an emerging computing model, cloud computing has the advantages of high reliability, huge amount of data processing, flexible scalability, and high equipment utilization, and is particularly suitable for the requirements of smart grid construction on information technology.

Therefore, the introduction of cloud computing in the smart grid technology field can greatly improve the real-time control and advanced analysis of the power grid, while ensuring that the existing hardware infrastructure of the power system remains basically the same, integrating the current system's data resources and processor resources. The ability to provide effective support for the development of smart grid technology. The combination of cloud computing and the power industry not only avoids the public insecurity of cloud technology, but also suits the construction of large-scale power grid enterprises such as power grids. It is a need and a trend to introduce cloud computing into the power system and construct a power cloud based on the existing power intranet.

Smart grid ushered in full development

At present, the construction of China's digital power grid can be regarded as the embryonic form of the smart grid, and the smart grid investment in intelligentization will reach 66-68 billion yuan per year. The investment in electrical equipment is in line with the large cycle. The cycle starts from the generation of electricity to the transfer of electricity to electricity distribution. If this logic is followed, the next cycle of the cycle must be started from electricity generation.

The power of rural power distribution equipment is high, and the demand for industrial power distribution equipment lags behind the economic cycle. The secondary equipment companies have sufficient orders, but the growth rate has slowed down. The sixth batch of partial monitoring price cuts are large, and protection price changes are small. The bidding price for a primary equipment has picked up and profitability has improved. We are focusing on inflection companies and closely tracking the UHV sector. There is no new change in the order trend of power electronics companies in November, but leading companies can take the lead out of the predicament through strategic adjustment. For power generation equipment, thermal power investment continued to decline, nuclear power only restarted coastal nuclear power, water and electricity restarts were less, wind power investment continued to decline, and photovoltaics faced risks of shrinkage in the mainstream market, and overall remained cautious.