The world's first renewable energy flexible DC gri

2022-08-01
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Light up the Winter Olympics, the world's first renewable energy flexible DC is completed in Zhangbei main body

light up the Winter Olympics, the world's first renewable energy flexible DC is completed in Zhangbei main body

light up the Winter Olympics, and the world's first renewable energy flexible DC is completed in Zhangbei main body

Zhangbei flexible DC simultaneous test demonstration project construction site. Photographed by correspondent Gu Yulong on November 3, Hebei Province (correspondent Gu Yulong) today, the main body of the world's first renewable energy flexible DC - Zhangbei flexible DC test demonstration project ± 500 kV Fengning Beijing line (Section 3) under the construction of Hebei Power Transmission and transformation Co., Ltd. was completed and is expected to be put into operation before the end of the year. At that time, the Beijing Winter Olympic venues will realize 100% clean energy power supply. "The wind in Zhangbei is also very important to greatly improve the canvas and heart line" will light up the "Winter Olympic lights"

it is understood that the project is the world's first renewable energy flexible DC power project, and also the flexible DC project with the highest voltage level and the largest transmission capacity in the world. It is also a key construction project of State Grid Corporation of China to serve the green and low-carbon Winter Olympics. Clean energy such as wind power and Optoelectronics are used at the power side. Upon completion, the project will realize the high-power output of new energy in Zhangbei region, provide stable and reliable clean energy for Beijing Tianjin Hebei region, and serve the construction of low-carbon Olympic zone

construction site of Zhangbei flexible DC test demonstration project. Photographed by correspondent guyulong

the bid section under the construction of Hebei Power Transmission and transformation Co., Ltd. is located in Zhangjiakou mountain area. It needs to build 291 new iron towers and 158.048 kilometers of ground wires. The terrain along the project is complex, the mountains are high and the road is dangerous, and the transportation work is extremely difficult. Many construction sites along the project cannot use large machinery and equipment such as 3-point zigzag test, 4-point zigzag test, sheet metal tensile test, thick plate tensile test, reinforced steel bar tensile test, chain tensile test, fastener test, connecting rod test, modified fatigue test, bending torsion composite fatigue test, interactive zigzag fatigue test, CT test, CCT test, gear fatigue test, etc. under interruptible sinusoidal load, The construction personnel can only use mules, horses, cableways and other methods to transport sand and gravel, and even carry construction equipment over mountains and mountains to carry out construction. They excavated stone foundation pits in the mountains, erected iron towers at the top of the mountains, erected lines between the mountains, rigidly implemented various safety and quality regulations, and overcame numerous construction difficulties to ensure the timely completion of the project

at present, the project is preparing to carry out re inspection and acceptance. It is expected that the electrification conditions will be available in December this year

preliminary review:

(2) resistance spot welding: admin

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