What is the Baihetan-Jiangsu project, a 7-millisecond flash transmission of 2080 kilometers from west to east?

Baihetan? Jiangsu project is a major project to transmit electricity from Sichuan and Yunnan provinces to Jiangsu.

Baihetan Hydropower Station is located in ningnan county, Liangshan Prefecture, Sichuan Province and Qiaojia County, Zhaotong City, Yunnan Province. Its engineering function is mainly power generation, and it also has comprehensive benefits such as flood control, sand blocking, improving downstream shipping conditions and developing shipping in the reservoir area. Baihetan Hydropower Station not only supplies electricity to nearby areas, but also mainly supplies electricity to economically developed coastal areas such as Jiangsu and Zhejiang.

First, what is this?

East China is economically developed, with a large electricity consumption base and a high proportion, and the development of strategic emerging industries, new formats and new models will accelerate. In addition, the population continues to gather in the eastern region, and the demand for electricity is rising. The eastern region is the load center of China.

In order to solve the pressure of electricity consumption, Baihetan? Jiangsu project came into being.

This project cooperates with the existing UHV projects in East China, increasing the proportion of clean energy consumption in Jiangsu, enhancing the mutual assistance ability of power grid, helping to meet the peak in summer and winter, and effectively alleviating the contradiction between power supply and demand in East China in the medium and long term.

Second, Baihetan? The great significance of Jiangsu project.

This project is the world's first hybrid cascaded UHVDC project, which was first developed in the world? Regular DC+ flexible DC? The UHVDC transmission technology based on hybrid cascade integrates the advantages of UHVDC transmission, such as large capacity, long distance, low loss, flexible DC transmission control and strong system support ability, which has important demonstration and leading significance.

UHVDC is like a highway that transmits electricity directly from point to point without stopping in the middle.

In other aspects, it is the first time to study the construction method of dynamic replacement of filled soil foundation with high water content clay, which solves the world-class problem of ultra-high water content clay filled soil with natural water content above 55% and avoids the large-scale abandonment of 2.5 million cubic meters of soil.

Baihetan? Jiangsu project will effectively alleviate the power supply gap in the eastern coastal areas, promote the stable development of social economy, and further coordinate the power allocation capacity of China.