Photo shows that the construction team is operating rotary excavator for foundation pit excavation at Tower 31 site of Sichuan-Chongqing 1000 kv ultra-high voltage (UHV) alternative current (AC) power line construction project (Chongqing section).
BEIJING, March 2 (Xinhua) --The testing of the designed technological process of the Sichuan-Chongqing 1000kv ultra-high voltage (UHV) alternative current (AC) power transmission construction project (Chongqing section) is underway in Tongnan District of Tongliang, southwest China's Chongqing Municipality.
Undertaken by State Grid Chongqing Electric Power Company, the power transmission project kicked off construction on September 29, 2022. It will build four UHV substations respectively in Ganzi, Tianfu and Chengdu in southwest China's Sichuan Province as well as Tongliang in Chongqing Municipality. The Tongliang substation is expected to enter operation in 2024.
With a total investment of 28.8 billion yuan, the four substations will generate 24 million Kilovolt-amperes (kVA) of transformer capacity and cover 658 kilometers of double-circuit UHV lines, said an official from State Grid Chongqing Electric Power Company.
Upon completion, the voltage level of the main grid of the Southwest Power Grid will be raised from 500 kV to 1000 kV, which can effectively undertake the transmission of clean electric energy such as hydropower from Ganzi and Aba in western Sichuan and ensure the power needs within Chengdu-Chongqing economic circle.
Located in mountainous region of Chongqing, the project faces with many construction challenges, especially the difficulties in safety and quality control. To avoid the risk of personnel underground operation, the construction team adopts rotary excavator to make holes for foundation excavation and uses intelligent sensing system to pour concrete.
(Edited by Tian Shenyoujia with Xinhua Silk Road, tianshenyoga0524@163.com)
A single purchase
