Promoting and applied new technologies to accelerate UHV construction

On September 13th, the Chongqing section of the Baihetan ± 800 kV high -voltage DC transmission line project successfully crossed the Yangtze River. The picture shows the construction staff carried out the on -site operation of the Yangtze River. Photo by Huang Wei

On September 13, the temperature in Jiangjin District, Chongqing was 34 degrees Celsius. In the Baihe Beach -Zhejiang ± 800 kV high -voltage DC transmission project (hereinafter referred to as the White Zhejiang Line) Chongqing Duanyu 1 standard between the No. 2081 ～ 2083 tower, dozens At the same time, busy installing the circuit bar, anti -vibration hammer, etc. Below the tower is the rolling Yangtze River. On the same day, the Chongqing section of the White Zhejiang Line successfully crossed the Yangtze River, and the 92.3 kilometer line of the Chongqing 1 section penetrated.

The White Zhejiang Line is a key project of "Western Power Delivery", passing through Sichuan, Chongqing, Hubei, Anhui, and Zhejiang provinces, with a total length of 2140.2 kilometers. The Chongqing section of the White Zhejiang Line is under construction and management of the State Grid Chongqing Power Company. It plans to build 641 base transmission tower, and the tower construction in mountains accounts for more than 70%.

On September 1st, the Baizhe Line Chongqing Duanyu 1 standard section of the Yangtze River entered the line operation stage. The main cross -gear distance of the Yangtze River is 1635 meters, and 2 base towers are built on the east and west coasts of the Yangtze River. Among them, the Tower 2082 on the east coast is 189.2 meters high and weighs 909.83 tons.

"In addition to the tower height and long distance, the Chongqing section of the White Zhejiang Line is also adjacent to the Baihetan -Jiangsu special high -voltage line, which is difficult to cross the Chengdu -Chongqing railway, and safety management." Zhang Guangyong introduced that the engineering project department carefully organized and planned it, and it was connected with relevant government departments in advance to make construction preparations.

"This time the Yangtze River crossing lines exceeded 110 meters. In order to ensure the safety of the Yangtze River navigation, we strictly adopted a construction plan for intermittent sealing and tugboats to lead the rope to the river, and one by one. . "Zhang Guangyong said that Chongqing Electric Power Construction Company organized a bidding section to undertake the construction unit Heilongjiang Province to send a substation company to invest in 12 large -scale Zhang and four types of ships to keep the wires a safe distance on the river surface. During the sealing period, conducting wire exhibitions, closing lines, and tight lines to ensure that 8 guide lines and 2 optical cables cross the river smoothly.

In the Chongqing section of the White Zhejiang Line, due to the complexity of the terrain, the mountains and the fog of the river, the construction facing the problem of being blocked and the construction environment is low. State Grid Chongqing Electric Power vigorously promotes and applied new technologies, and uses Beidou High -precision positioning technology and wireless communications technology to assist in conducting line operations. When the wire operation is operated, the communication module installed on the wire will transmit the location information to the base station in real time to achieve accurate and efficient measurement of the curc perchrus, and the measurement accuracy can reach 20 mm. At the same time, the construction adopts the entire process of visualization of the line operation. Set up a monitoring room in the tension field, install a camera on each base tower, and monitor the travel status of the line during the real -time monitoring of the line. Security Risk.

The construction of the project not only drives the development of industries such as power transformation equipment manufacturing, but also creates employment positions to help local villagers employment at their doorsteps. "During the infrastructure of the tower of the Chongqing 1 bidding section, more than 300 local villagers with relevant capabilities participated in the project construction." Heilongjiang Province's project manager and Fabin introduced that the villagers engaged in the tower foundation excavation and poured Can get a salary of more than 300 yuan. In addition, the steel, cement, river sand and other materials required by the tower infrastructure are purchased from local architectural dealers, which has also led to the development of local enterprises.

According to the construction schedule, the Chongqing section of the White Zhejiang Line is planned to penetrate the end of September.

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