"Western Power East Delivery" large arteries high -voltage white Zhejiang line Chongqing section completes the Yangtze River leap

On September 13th, the "West East Transmission" Great Arterial High -voltage Baihetan -Zhejiang ± 800 kV high -voltage DC transmission project successfully completed the Yangtze River leap.

The White Zhejiang Line is a major power grid project for the National West Electric Delivery and Clean Energy Delivery. It passes through Sichuan, Chongqing, Hubei, Anhui, and Zhejiang 5 provinces (cities). The line length is 2140 kilometers. The first UHV DC project. Among them, the length of the Chongqing section of the White Zhejiang Line is 331.25 kilometers, with a total of 641 electric tower transmission tower, and the mountain terrain accounts for more than 71%. The construction was launched in October 2021. At present, 98.3%of the project has been completed.

SN2082, located on the east bank of the Yangtze River in Jiangjin District, is 189.2 meters high, which is equivalent to more than 60 floors height and weighs 909.83 tons. It is currently the highest height and heavier power transmission tower in the southwest. The camera is installed on each base tower, and the tension field is equipped with a monitoring room to monitor the line state of the line during the line, and the distance from the leap -out objects. This method, as a supplement and replacement of human monitoring, has the advantages of facilitating global control, rapid feedback, and reducing risks, which plays an important role in the safety and efficiency of the entire line construction.

In the cross -river release operation, the construction unit vigorously promoted the application of new technology for the construction unit for the first time in response to the curved lines of the Yangtze River. The first time, the Beidou high -precision positioning and wireless communication technology were adopted for launch operations. It is understood that this technology transmits positioning information to the base station by automatically walking on the mobile module on the wire to achieve the purpose of accurately measured the curved curved, and efficiently complete the transmission line vertical measurement. Adopting this technology, determining whether the wire installation is in place under non -visual conditions, the accuracy can reach 20 mm, which solves the obstacles caused by the complexity of Chongqing, the foggy mountains, and the night construction. The problem.

It is understood that the Chongqing section of the White Zhejiang Line plans will be fully connected at the end of September, and it will have electricity in November. It is reported that after the construction of the "White Zhejiang Line" is completed, it is expected that the transmission capacity of more than 30 billion kilowatt -hours per year can be achieved. "The goal is of great significance.

(Reporter Li Hongmiao Zhang Bojun)

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