The world's first flexible direct current project put into operation by the end of a significant boost in zhangjiakou new energy delivery ability

According to the Beijing daily on July 26, Zhang Bei flexible dc grid pilot demonstration project is expected to completed by the end of commissioning. New energy to power the zhangjiakou, received a significant boost, engineering annually to the Beijing area of about 22. 5 billion KWH of clean energy.

the project is the world's first flexible dc power grid project, is also the highest voltage level in the world, conveying capacity of the largest segment more flexible HVDC project, four new Zhang Bei, koho, FengNing, Beijing & plusmn; A 500 kv flexible dc converter station, line kilowatts.

in north area is the national planning of one of the nine thousands of kilowatt wind power base, particularly new energy rapid development momentum in recent years zhangjiakou area. By the end of 2018, new energy installed capacity of 1213 zhangjiakou area. 10000 kw ( Excluding access part in south power network in hebei province) The maximum load of 5, it is the local history. 1 times.

the new energy inherent randomness, volatility characteristics, large-scale new energy grid is a worldwide problem, how to put these green electricity went out, and adopted the way of flexible HVDC project designer.

the substation project manager Chen Guiqing project construction units, is a return of more than 30 years in the power construction. According to his introduction, compared with the conventional ac/dc transmission technology, flexible HVDC overcomes the exchange and the inherent defect of conventional HVDC transmission technology effectively resolve the large-scale new energy & other; Not on & throughout; “ Send out & throughout; Difficult problem, at the same time, the way to make full use of the complementary characteristics of large-scale wind, light and flexible load characteristics of pumped storage, build flexible energy interaction platform, fixed self-identify electric & other; Difficult given & throughout; Difficult problem.

the project is supporting the principal part of the project, construction began last February 28, time and heavy task. Its north electric co. , LTD. Engineering management branch guo ji, zhangjiakou bashang region start snowing in October, in April the following year, warm, winter winds at low temperature, extreme temperature can reach 40 ℃ below zero, valid only 7 during the month of the year. Combined with full % is located in the hills, the terrain ups and downs, part DaWei is located in the mountains, as high as 1500 meters to 2000 meters above sea level, all work should be ahead. “ Workers often use the site to build greenhouses, electric heating, operation in cold weather. ” Guo said.

after the project was put into operation, transport to Beijing area of about 22. 5 billion KWH of clean energy, equivalent to save BiaoMei 7. 8 million tons, 20. 4 million tons of carbon dioxide, to service the national action plan for the control of air pollution, play the blue sky, realize the games venues 100% clean energy supply to provide strong support.