December 10, Baihetan - Jiangsu ±800 kV UHVDC transmission project officially started construction.
Crane beach - jiangsu engineering from jue county in liangshan prefecture, sichuan province, in changshu city, suzhou, jiangsu province, in sichuan, chongqing, hubei, anhui and jiangsu provinces (municipalities directly under the central government), 5 lines across the minjiang river and the han river and the Yangtze river, via high altitude, repeat ice and other regions, total length of 2087 km, a new crane beach, YuCheng two converter station. With a rated transmission capacity of 8 million kW and a total investment of 30.7 billion yuan, the project is scheduled to be completed and put into operation in 2022.
The project comprehensively integrates the advantages of UHV DC and flexible DC transmission technology, and adopts the new hybrid cascaded DC transmission technology for the first time in the world, greatly improving the power receiving capacity of East China Power Grid, and improving the safe and stable operation level of the grid., said an official with the state grid corporation on the project, is our country to carry out the strategy of "China" the focus of the project, is to promote the structural adjustment of national energy and clean energy projects, energy saving and emission reduction for optimizing energy configuration, guarantee the power supply, boosting economic growth and promote green development, leading the technology innovation, and so on has the remarkable comprehensive benefit.
It is reported that after the project is put into operation, the power transmission capacity will reach 8 million kW, the annual transmission power will be more than 31.2 billion KWH, East China can reduce the annual use of coal power generation 14 million tons, carbon dioxide emissions 25.42 million tons, sulfur dioxide 250,000 tons, effectively improve the environmental quality in East China. In cooperation with the existing UHV projects in East China, the project can give full play to the advantages of UHV power grid, improve the proportion of clean energy consumption in Jiangsu, and enhance the water-fire mutual supply capacity of the power grid.
At the same time, the power of Baihetan hydropower Station can be distributed on a large scale, and the advantages of Sichuan resources can be transformed into economic advantages. Baihetan - Jiangsu ±800 kV UHVDC transmission project is a key project of "power transmission from west to East", starting from Jianchang converter station in Liangshan Prefecture, Sichuan Province, and ending at Gusu converter station in Suzhou, Jiangsu Province, with a rated transmission power of 8 million kW.
On December 27, 2021, the pouring, tower formation and wiring work of the 89-base iron tower of Baihetan - Jiangsu ±800 kV UHVDC transmission project (Nanjing section) was completed, taking the lead in Jiangsu Province to complete the whole line.
Construction personnel of Jiangsu Province Power Transmission and Transformation Co., Ltd. install spacers 100 meters above the ground in Baihetan, Jiangsu Province, on Jan 13, 2022, the Jiangsu section of the Jiangsu ±800 kV UHVDC transmission line project.
On March 14, 2022, the Baihetan UHV power transmission project of ±800 kV to Jiangsu Province successfully crossed the Yangtze River again in Wuhu, Anhui province, marking the completion of the four most difficult crossings of the project. The entire line will be completed by May 2022, and when it is officially put into operation by the end of the year, it will be able to transmit more than 30 billion KWH of electricity to eastern China every year.
On April 11, 2022, the last two sections of the Baihetan-Jiangsu ±800 kV UHVDC transmission line (N6328-N6332 and N6218-N6221) were completed across the ±500 kV Yihua line, marking the completion of the Anhui section of the project.
On May 3, 2022, in the crane beach - jiangsu + 800000 v high voltage dc transmission line project (hubei) (hereinafter referred to as Bai Jiang engineering) e bid 3 lines of the construction site, construction workers, methodically bid to complete the last step of wires with the work, mark the Bai Jiang project (hubei) broadly through smoothly.
On May 20, 2022, the Baihetan -- Jiangsu ±800 kV UHVDC transmission line project was completed and entered the live commissioning phase.
On July 1, 2022, the State Grid Co., Ltd. Baihetan to Jiangsu ±800 kV UHVDC transmission project was completed and put into operation.