Analysis on the Influence of Smart Grid Development in 2012

Today, electric buses, electric taxis, and electric sanitation vehicles are not uncommon in the streets of Beijing, Shanghai, Qingdao, and Xi'an. In the urban area of ​​Jinhua, Zhejiang, more than 400 private pure electric vehicles have been on the road, and Jinhua has also become the country’s largest city with the largest number of electric vehicles. With the opening of the Shanghai-Shanghai-Shanghai inter-city interconnection project, it became possible for electric vehicles to “go out of the city” and “out of the province”.

The development of electric vehicles is inseparable from the improvement of the charging and replacement facilities. This is just one of the components of the strong smart grid in the power supply segment. Strong smart grid as an integrated power system, including power generation, transmission, transformation, distribution, electricity, scheduling and other links. With continuous breakthroughs in theoretical innovation and engineering practice, the role of strong smart grids in economic and social development has gradually emerged, and profound changes are being driven in such areas as energy resources, environmental ecology, and production and life.

Relying on the high-speed energy channel of the power industry to achieve transformation and development The construction of a strong smart grid in China began in 2009. In that year, the State Grid Corporation of China held an international conference on ultra-high voltage transmission technology in Beijing and formally announced the construction of a strong smart grid featuring the UHV grid as the backbone grid, the coordinated development of the grids at all levels, and the characteristics of information, automation, and interaction. development Goals.

The foundation of the smart grid is "strong", and the key is to develop the UHV. With the completion of the 1000 KV UHV AC pilot demonstration project in Jindongnan-Nanyang-Jingmen in January 2009, the Xiangjiaba-Shanghai ±800 kv UHVDC demonstration project was put into commercial operation in July 2010, and the national grid has fully entered into operation. High voltage AC and DC hybrid grid era.

In early 2011, Li Xiaopeng, Standing Member of the Shanxi Provincial CPC Committee and Executive Vice Governor, said in an interview: “The UHV AC project has attracted worldwide attention and has played a good role in demonstrating and driving the optimization of energy resources in a wider range... It greatly eased the power shortage during the dry season in central China, and also greatly reduced the pressure on the transportation capacity of highways and railways."

As of January of this year, the UHV AC pilot demonstration project completed a total of 18.254 billion kwh of transmission from Jindian, which accounted for 29.3% of the total electricity delivered by Shanxi Power Grid in the past three years, equivalent to an alternative coal shipment of 5.9 million tons. According to the data, the same ton of coal, the output value of coal sent by the Sinotrans and power generation to Shanxi Province is about 1:4. The UHV power grid has provided a high-speed channel for the transformation and development of Shanxi's energy economy.

The UHV power grid not only changed the development mode of the North China coal base, but also maximally tapped the development potential of the southwest hydropower base and the northwest wind power base. At present, there are 3 UHV lines connecting the southwest hydropower base and the eastern load center, and the total transmission capacity is 21.6 million kilowatts. These large energy channels are driving the optimization of the configuration of southwest hydropower in a wider range to achieve a balanced regional economic development. With the start-up construction of the Hami-Zhengzhou UHV DC project, and the construction of the 750-kilovolt second tunnel project between Xinjiang and the main northwestern network, the transmission of Jiuquan wind power across the province in Hami, Xinjiang has become a reality.

At present, the State Grid has realized on-line measurement, information collection, equipment monitoring and integrated dispatching of 220 kV and above power grids, and the transmission capacity of the power grid across regions exceeds 40 million kilowatts. The construction of a strong smart grid has enabled the State Grid's resources to optimize the allocation of resources, economic operating efficiency, safety and intelligence levels have been comprehensively improved.

New energy sources have bettered the ecological environment on a large scale As of the end of June this year, China's installed capacity for wind power grid connection has reached 52.58 million kilowatts, and China has become the world’s largest wind power country. Premier Wen Jiabao, member of the Standing Committee of the Political Bureau of the CPC Central Committee and Premier of the State Council, issued important instructions and fully affirmed the company's efforts, and called for “accelerating the construction of new energy development and utilization, efficient deployment, and safe operation platforms for wind power and solar energy.”