Recently, several companies under China Energy Engineering Corporation (CEEC) have successfully won the bid for two ultra-high voltage transmission projects: the second 1000 kV AC transmission line project from Changzhi, Shanxi to Nanyang, Henan, and the ± 800 kV DC transmission project from Kubuqi Desert Base in Inner Mongolia to Shanghai. They will undertake key tasks such as feasibility study and survey design for the projects.

The Second 1000 kV AC Transmission Line Project from Changzhi, Shanxi to Nanyang, Henan

The starting point of the project is the 1000 kV substation in Changzhi, Shanxi, and the ending point is the 1000 kV substation in Nanyang, Henan. The line passes through Shanxi and Henan provinces, with a total length of about 449.3 kilometers. After completion, it will significantly enhance the power supply capacity of the Central China power grid, which is of great significance for ensuring energy security in the Central China region.

The winning bid situation is as follows:

The feasibility survey and design of Project Package 17 won by Zhongnan Institute includes a route that passes through Luoyang, Pingdingshan, and Nanyang cities, with a length of 152 kilometers.

Huabei Institute won the bid for the feasibility study package (Package 1) and the series compensation station project (including substation expansion) (Package 2), which will expand two substations in Nanyang and Changzhi, and construct two sets of series compensation devices at the temporary site in Luoyang City, Henan Province.

Shanxi Institute won the bid for the feasibility study and survey design package 15, which will build a new 1000 kV AC line of 154.4 kilometers, passing through Changzhi City and Jincheng City in Shanxi Province, and undertake the overall summary work of this section.

Inner Mongolia Kubuqi Desert Base Power Transmission Shanghai ± 800 kV DC Project

This project is a super transmission project spanning multiple provinces, with a total length of nearly 1951 kilometers. The starting point is located in Dalate Banner and Hangjin Banner, Ordos City, Inner Mongolia, crossing four provinces of Shanxi, Hebei, Shandong, and Jiangsu, and finally reaching Chongming District in Shanghai, delivering clean electricity to Shanghai and the entire East China region. After the completion of the project in 2025, it will be of great significance for optimizing the allocation of clean energy in the Kubuqi Desert Base, enhancing the power supply guarantee capacity in Shanghai and East China, and promoting China's green transformation and the achievement of dual carbon goals.

The winning bid situation is as follows:

Huadong Institute won the bid for the feasibility study and survey design of the receiving end converter station package A and the line engineering package 14. The station site is located in Shanghai, and the line package 14 passes through Rudong County, Rugao County, Nantong City, Jiangsu Province, and ends in Chongming District, Shanghai.

Central South Institute won the bid for the design package A of the converter station, including site survey, converter area, and DC field area design.

The first feasibility study package (Package 1) and line package 3 of the converter station system at the delivery end of the North China Institute were awarded. Line package 3 starts from the Mongolian Jin provincial border in Pianguan County, Xinzhou City, Shanxi Province and ends in Jingle County, Xinzhou City, with a length of approximately 148.0 kilometers.

Jiangsu Institute won the bid for the receiving end converter station package B, located in Chongming District, Shanghai; Simultaneously winning the bid for route package 12, passing through Huai'an City and Yancheng City in Jiangsu Province, with a length of 125 kilometers.

Anhui Institute won the bid for Line Package 11 survey and design, with a length of 133 kilometers, starting from the provincial border of Linyi City, Shandong Province and Lianyungang City, Jiangsu Province, and ending in Lianshui County, Huai'an City.

The feasibility study design integration work for Package 2 of Shaanxi Institute's winning bid project starts from Ordos City, Inner Mongolia Autonomous Region and ends at the border between Mongolia and Shanxi Province, with a new construction of 137 kilometers of ± 800 kV high-voltage transmission lines. Keywords: engineering construction, engineering construction news

The Xinjiang Institute won the bid for the survey and design package for Section 4, which passes through five counties (cities, districts) in Xinzhou City, Shanxi Province, with a total length of approximately 142 kilometers. Editor/Yang Beihua