In the cloud "needle -piercing lead", the national "Western Delivery" weaving and transmission artery

Zheng Cheng Zheng Siqi Cover Journalist Yang Li

In the mountains and mountains of Daliangshan, the fine lines pass through the fog with a thick line, reaching a high altitude of about 100 meters. Under a group of "Spider -Man" "needle -piercing and leading", a winding and long -term transmission "Tianlu" is currently. Gradually appear.

It is located in Zhaojue County, Liangshan Prefecture, Sichuan. It is the construction site of the Sichuan 1 bidding section of Zhejiang ± 800 kV high -voltage DC transmission projects, which is one of the national "West Electric East" and the Baihetan Hydropower Station.

On June 22, the cover journalist learned from the State Grid Sichuan Electric Power Company that the project has recently successfully launched this line -up operation, with a length of 5034 meters and a drop of altitude at the operation site of 900 meters. The successful development of the line also means that this one will pass through the "Tianlu" of 2140.2 kilometers in a total length of 2140.2 kilometers through Sichuan, Chongqing, Hubei, Anhui, and Zhejiang Province.

▲ On June 19, 2022, at the scene of Baihe Beach to Zhejiang UHV Power Transmission Project. (Photo by Lu Zhongdong)

Digital tons of transmission cable

How to be "woven" at a height of 100 meters?

"In the early stage of survey, we almost ran through the mountains nearby, and then found this slightly better work position, and then set up the side of Zhang Qian, which set up the line, and took another 7 days to build a 1.2 kilometer road." Manager Wang Pei said that the Sichuan 1 bid section line is located in the Yishan Yi Autonomous Prefecture, Sichuan. It is responsible for the construction of the State Grid Sichuan Electric Power Company. Most of the terrain along the line is high mountains, with a maximum altitude of 3500 meters. 47%, the length of the heavy ice area accounts for about 63%.

How did the major tons of transmission wires be paved on dozens of or even hundreds of meters high? According to him, the "needle -piercing lead" of the power grid is the "thin rope rope rope". Between the tower, the guidance rope of various materials such as nylon rope, steel wire rope, etc. , Complete the power transmission wire exhibition. At the time of the connection, there are traction fields and tension fields. The traction field is mainly used to carry the wires. The tension field mainly adjusts the tension of the wire during the traction through the tension machine to ensure that the wire is not friction with the ground, tree, and room.

This time, the Bai Zhelian Line section is No. 177 to No. 187 Tower. The two venues are broken like a knife and ax, and there are deep grooves below. Although the terrain and rain in the daytime made the line -up project extremely difficult, Wang Pei and his State Grid Sichuan Sichuan -Delivery Company Construction Team have been prepared.

▲ On June 19, 2022, at the scene of Baihe Beach to Zhejiang UHV Power Transmission Project. (Photo by Lu Zhongdong)

Construction site

Successfully complete the operation with the weather to grab time

"After a while, the mist is scattered. We hurry up and put the line." The preparation process was completed. Wang Pei walked back and forth in the muddy tension field to check all aspects of the line. From time to time, he looked up at the sky.

The weather in the Daliangshan area changes very quickly, and often can experience the rainy weather in one or two hours. At noon, the Iron Tower No. 178 gradually appeared out of the outline, and the construction site began to lively.

"Pay attention to each tower position, open up and prepare, pay attention to observing the sliding situation of the board, and start to put the line." On the same day, after the operation team leader issued an assignment instructions with a walkie -talkie, accompanied by the sound of the mechanical rumbling, the three walking boards were on the board on the board. Under everyone's gaze, began to move along the established direction in a slide ...

"The fog is up again, and the visibility is too low. The operation is temporarily stopped."

"The corner tower personnel checked the throwing situation of the rolling. The staff of Zhang Qian was prepared in advance, and the fog was scattered and immediately followed." Wang Pei's rapid voice sounded in the walkie -talkie of the operator.

It didn't take long for the fog to spread by the wind of the valley. "The fog is scattered, can I confirm the position of the board on the 179 side?" In the end, as the wires arrived at the predetermined target, the "racing" on the cloud came to an end. The construction personnel will continue to put the horse into the operation of the wire tight line, attachment installation. ▲ On June 19, 2022, at the scene of Baihe Beach to Zhejiang UHV Power Transmission Project. (Photo by Lu Zhongdong)

It is expected to be completed at the end of this year

Sichuan can transport clean hydropower to Zhejiang over 20 billion kilowatt -hours every year

According to reports, as one of the projects from the Baihetan Hydropower Station, the Baihetan -Zhejiang ± 800 kV high -voltage DC transmission project is connected to the Baihetan Hydropower Station. Like Jiangsu ± 800 kV high -voltage DC transmission project, it is also one of the national "Western East Transmission" arteries.

The line passes through Sichuan, Chongqing, Hubei, Anhui, Zhejiang, including 5 provinces and cities, with a total length of 2140.2 kilometers and a transmission capacity of 8,000 MW. The project is expected to be completed and put into operation by the end of 2022. At that time, Sichuan will transport clean hydropower over 20 billion kilowatt -hours to Zhejiang every year to further ensure energy supply in the eastern region, optimize the energy structure, improve the level of energy cleaning, and provide inexhaustible impetus to help the country's "double carbon" goal.

▲ On June 19, 2022, at the scene of Baihe Beach to Zhejiang UHV Power Transmission Project. (Photo by Lu Zhongdong)

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