"Although there is a power shortage in some areas, there is no large-scale power outage this year, and we have smoothly achieved peak summer. We have passed the electricity peak and UHV has contributed." Lu Yansun, Vice Minister of the former Ministry of Machinery Industry soon Before the China Machinery Industry Federation, an office to the China Industry News reporter said with emotion.
This year's peak summer situation is quite different from previous years.
The newly commissioned UHV Binder DC and the two UHV DC lines already in operation have operated at full capacity for the first time and have sent green water from Central China to East China. The safe operation of more than 5 years of southeastern Shanxi - Nanyang - Jingmen UHV AC pilot demonstration project, but also the surplus water and electricity in southwest and central China area to the power shortage in North China.
This year, the UHV transmission channel has been fully loaded at full capacity and has become the main force in the national summer peak power protection battle. These "power expressways" have also brought into full play the advantages of long transmission distance, large capacity and low loss, Refresh the layout of China's resource optimization configuration.
Unobstructed power expressway <br> Summer peak pressure of no less than in previous years. Take the data of July 22 as an example. According to the "State Grid Daily" reported that the East China Power Grid load all the way up to 14:48 reached 212.9 million kilowatts, a record high. Among them, Shanghai, Jiangsu, Zhejiang, the highest load were up to, 54800 kilowatts.
According to reports, under normal weather conditions, the power supply and demand within the operating area of ​​the State Grid is generally balanced with a maximum power shortage of about 7.9 million kilowatts. In the event of large-scale and sustained hot weather across the country, the maximum power shortage is about 15.7 million kilowatts. In the past, large users Huadong Power Grid, but not in the most electricity in the list of areas. Very important reason is that distant calls have played a significant benefit.
On July 17, Jinping-Sunan ± 800kV UHV DC Project (Jin Su Line) successfully completed the rated load and 1.05 times overload test. The line with the Xiluodu left bank - Zhejiang Jinhua ± 800 kV HVDC Transmission Project (Binjin Line), Xiangjiaba - Shanghai ± 800 kV UHV DC Project (Fu Teng Line) three UHV DC, the first full power at the same time Power transmission, southwest hydropower base of electricity, a steady stream of delivery to East China.
According to reports, these three lines east China's largest power transmission up to 21.6 million kilowatts, accounting for 10% of the total load in east China. Meanwhile, the power delivered to Shanghai, Jiangsu and Zhejiang at the three major DC full-power operations accounted for 25%, 10% and 15% of the maximum electricity load of the three provinces in 2014 respectively, which greatly enhanced the capability of optimizing the allocation of resources across regions.
In the winter, however, the southeastern-Nanyang-Jingmen UHV exchanges, which sent the North China thermal power to the vast land of central China in the winter, turned to gorgeous this summer, sending surplus hydropower in the southwestern and central regions to the North China where electricity was scarce.
According to reports, since put into operation in 2009, there have been 14,527,000,000 kilowatt hours of electricity through the "power highway" from south to north to the North China Plain, take full advantage of the Three Gorges, Gezhouba and other hydropower stations of high-quality hydropower energy.
And as Enolissasuo, vice-president of the International Electrotechnical Commission (IEC) said, "When it comes to UHV, IEC firmly believes that this power transmission technology can greatly solve the future energy crisis." The key to this is that it has a large capacity , High efficiency, long-distance transmission advantages, which is the key to solving the problem. "
In fact, under the pressure of smog management, environmental management and energy conservation and emission reduction that continue to intensify in our country, UHV is emerging. In addition to the national "Eleventh Five-Year" and "Twelfth Five-Year Plan" outline, the air pollution control action plan, energy development "Twelve-Five" plan, China is still planning to build 12 cross-region transmission channels, including the State Grid Corporation 4 UHV AC lines and 4 UHV DC lines, respectively 4 1000 kV UHV AC lines in Ximeng-Shandong, Yu-Heng-Shandong, Huainan-Nanjing-Shanghai and Mengxi-Tianjin, - Shandong, Ximeng - Jiangsu, Ningdong - Zhejiang, Shanxi - Jiangsu 4 ± 800 kV UHVDC lines.
Overseas markets have been gains <br> and UHV has become China's electrical equipment manufacturing enterprises to the world and the world's leading flash card.
This year's peak summer situation is quite different from previous years.
The newly commissioned UHV Binder DC and the two UHV DC lines already in operation have operated at full capacity for the first time and have sent green water from Central China to East China. The safe operation of more than 5 years of southeastern Shanxi - Nanyang - Jingmen UHV AC pilot demonstration project, but also the surplus water and electricity in southwest and central China area to the power shortage in North China.
This year, the UHV transmission channel has been fully loaded at full capacity and has become the main force in the national summer peak power protection battle. These "power expressways" have also brought into full play the advantages of long transmission distance, large capacity and low loss, Refresh the layout of China's resource optimization configuration.
Unobstructed power expressway <br> Summer peak pressure of no less than in previous years. Take the data of July 22 as an example. According to the "State Grid Daily" reported that the East China Power Grid load all the way up to 14:48 reached 212.9 million kilowatts, a record high. Among them, Shanghai, Jiangsu, Zhejiang, the highest load were up to, 54800 kilowatts.
According to reports, under normal weather conditions, the power supply and demand within the operating area of ​​the State Grid is generally balanced with a maximum power shortage of about 7.9 million kilowatts. In the event of large-scale and sustained hot weather across the country, the maximum power shortage is about 15.7 million kilowatts. In the past, large users Huadong Power Grid, but not in the most electricity in the list of areas. Very important reason is that distant calls have played a significant benefit.
On July 17, Jinping-Sunan ± 800kV UHV DC Project (Jin Su Line) successfully completed the rated load and 1.05 times overload test. The line with the Xiluodu left bank - Zhejiang Jinhua ± 800 kV HVDC Transmission Project (Binjin Line), Xiangjiaba - Shanghai ± 800 kV UHV DC Project (Fu Teng Line) three UHV DC, the first full power at the same time Power transmission, southwest hydropower base of electricity, a steady stream of delivery to East China.
According to reports, these three lines east China's largest power transmission up to 21.6 million kilowatts, accounting for 10% of the total load in east China. Meanwhile, the power delivered to Shanghai, Jiangsu and Zhejiang at the three major DC full-power operations accounted for 25%, 10% and 15% of the maximum electricity load of the three provinces in 2014 respectively, which greatly enhanced the capability of optimizing the allocation of resources across regions.
In the winter, however, the southeastern-Nanyang-Jingmen UHV exchanges, which sent the North China thermal power to the vast land of central China in the winter, turned to gorgeous this summer, sending surplus hydropower in the southwestern and central regions to the North China where electricity was scarce.
According to reports, since put into operation in 2009, there have been 14,527,000,000 kilowatt hours of electricity through the "power highway" from south to north to the North China Plain, take full advantage of the Three Gorges, Gezhouba and other hydropower stations of high-quality hydropower energy.
And as Enolissasuo, vice-president of the International Electrotechnical Commission (IEC) said, "When it comes to UHV, IEC firmly believes that this power transmission technology can greatly solve the future energy crisis." The key to this is that it has a large capacity , High efficiency, long-distance transmission advantages, which is the key to solving the problem. "
In fact, under the pressure of smog management, environmental management and energy conservation and emission reduction that continue to intensify in our country, UHV is emerging. In addition to the national "Eleventh Five-Year" and "Twelfth Five-Year Plan" outline, the air pollution control action plan, energy development "Twelve-Five" plan, China is still planning to build 12 cross-region transmission channels, including the State Grid Corporation 4 UHV AC lines and 4 UHV DC lines, respectively 4 1000 kV UHV AC lines in Ximeng-Shandong, Yu-Heng-Shandong, Huainan-Nanjing-Shanghai and Mengxi-Tianjin, - Shandong, Ximeng - Jiangsu, Ningdong - Zhejiang, Shanxi - Jiangsu 4 ± 800 kV UHVDC lines.
Overseas markets have been gains <br> and UHV has become China's electrical equipment manufacturing enterprises to the world and the world's leading flash card.