Saturday, October 28, 2017

Completion of the trial run in the Ximeng - Taizhou ±800kV UHVDC project

The Ximeng - Taizhou ±800kV UHVDC project completed its 1-week (168-hour) trial run on the 30th of September 2017. The project is one of the key components of the ‘Four UHVAC & Four HVDC plan’ as part of the broader ‘National Air Pollution Control Action Plan’. 

The ±800kV UHVDC Transmission line starts at the Ximeng converter station, which is  located in the Inner Mongolia Autonomous Region and terminates at the Taizhou converter station, crossing five provinces (Inner Mongolia, Hebei, Tianjin, Shandong, Jiangsu), and covering an overall distance at 1620km. The rated capacity of the UHVDC system is 10000 MW, with the inverter station connecting to two AC systems (a 500kV and a 1000kV AC systems).

The total cost of the project is 25,4 billion RMB (~AU$5.1B). The project is the second HVDC line to the Jiangsu province, which is a major load center and one of the biggest manufacturing centers in China. The first HVDC line project was the Jinbei-Jiangsu ±800kV UHVDC system which came into service on the 30th of June, during the summer peak time. At that time the electricity demand at Jiangsu reached a peak of 100 GW, with the UHVDC connection providing a maximum output at 4500 MW, contributing to load supply and system stability.

Upon its completion, the Ximeng-Taizhou UHVDC Project will have the ability to transmit 55000 TWh annually, equally transport 25 million tons, and reducing CO2 emissions by 49.5 million tons. The project will contribute to the control of air pollution around tein the Yangtze district.

The Ximeng - Taizhou UHVDC transmission line