China's first Sha Ge Huang large base external transmission ultra-high voltage direct current project. The 800 kV ultra-high voltage direct current transmission project from Ningxia to Hunan is not only a major breakthrough in the field of power transmission, but also a landmark project for China's new energy development and utilization, as well as the optimization of resource allocation in the east and west.

The project is located in six provinces: Ningxia, Gansu, Shaanxi, Chongqing, Hubei, and Hunan. This project is the first power transmission channel mainly focused on clean energy transmission in the country, and has been included in the national power planning. It is expected to be completed and put into operation by 2025, adding about one sixth of the power supply to Hunan.

This project aims to construct two converter stations in Zhongwei, Ningxia and Hengyang, Hunan, with a transmission capacity of 8 million kilowatts. The investment scale of the project is approximately 100 billion yuan. The project passes through six provinces and cities including Ningxia, Gansu, Shaanxi, Chongqing, Hubei, and Hunan, with a total length of 1634 kilometers.

Ningxia Power Transmission and Transformation Engineering Co., Ltd. has undertaken more than 50% of the tower foundation construction for the Ning1 section of the Ningdian Hunan transmission line project. It is expected to complete the foundation construction of this section by the end of June this year. The Xiang-1 section of the Ningxia to Hunan ± 800 kV ultra-high voltage direct current transmission line project, constructed and managed by State Grid Hunan Electric Power Co., Ltd., has also successfully completed the first section of the entire line's overhead line construction, marking the successful completion of the overhead line construction task of the key project of crossing the west to east power transmission. We also adopted new technologies such as crimping traction pipes and visualized grounding wire deployment to ensure smooth implementation of crossing construction and controllable safety risks. Next, we will continue to increase the guarantee of project elements, strengthen engineering construction scheduling, effectively and orderly promote engineering construction, and ensure that the project is put into operation on schedule.

This project spans vast regions and efficiently and stably delivers the abundant clean energy such as solar and wind energy from Ningxia to regions with high energy demand such as Hunan through ultra-high voltage direct current transmission technology, achieving optimized energy allocation and complementarity. It not only effectively alleviates the power supply pressure in Hunan and other regions, but also promotes the rapid development of new energy industries in western regions such as Ningxia.

In addition, the construction of this project also reflects China's strong strength in new energy technology and power grid construction. The ultra-high voltage direct current transmission technology has advantages such as large transmission capacity, long distance, and low losses, and is the forefront technology in the field of power transmission in the world today. The successful construction of the 800 kV ultra-high voltage direct current transmission project from Ningxia to Hunan not only demonstrates China's leading position in new energy technology and power grid construction, but also contributes Chinese wisdom and solutions to global energy transformation and sustainable development. Keywords: engineering construction, engineering news, engineering construction information.

In the future, with the continuous development of the new energy industry and the continuous innovation of power grid technology, China's ultra-high voltage direct current transmission projects will play a more important role, injecting strong impetus into promoting the optimization and upgrading of China's energy structure and achieving green and low-carbon development. (This article is from the official website of Jiandao: www.seetao. com. Reproduction without permission is not allowed, otherwise it will be punished. Please indicate Jiandao's website and the original link when reprinting.) Jiandao's mechanical column editor/Zhou Yingwen