The converter stations at the Ximeng-Taizhou UHVDC Project are nearing completion with 70% of main devices already installed and the overall project expected to reach completion by this Chinese Spring Festival (28th January 2017).
Figure 1 Converter station (from Xinhua Network)
This project is a significant component 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, located in the Inner Mongolia Autonomous Region and terminates at the Tazhou converter station, crossing five provinces (Inner Mongolia, Hebei, Tianjin, Shandong, Jiangsu), covering an overall distance at 1620km. Commissioning and testing is expected to be completed by June, 2017, and the whole system will be operational by August.
Upon its completion, the Ximeng-Taizhou UHVDC Project will have the ability to transmit 55 billion KWh 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 in the Yangtze
district.
Figure 2 Construction of converter station
Driven by increased concerns about pollution and air quality, especially in the North-eastern provinces, Premier Li Keqiang hosted, on 18th April 2014, the first conference of the National Energy Committee, that led to the implemention of the ‘National Air Pollution Control Action Plan’, and authorized construction of the “Four UHVAC & Four UHDC' Project, to "improve reliability of electricity supply, boost development of clean energy, contribute to a sustainable growth of the economy".
The whole project is expected to cost 174.48 billion RMB (34.2 billion AUD), and included construction and expansion of 10 high voltage converter stations and 15 high voltage substations transformer capacity reaches 140 million kWh. The overall transmission line length of all the projects is above 12,000 km, with all eight transmission lines expected to come into service within 2017.
The following are the details of the eight transmission lines of the “Four UHVAC & Four UHDC' Project.
Name
|
Voltage
|
Distance(km)
|
Capacity (MW)
|
Operation Time
|
Status
|
1 Huainan-Nanjing-Shanghai
|
1000kV
UHVAC
|
2*789
|
12000
|
2016
|
In Operation
|
2 Ximeng-Shandong
|
1000kV
UHVAC
|
2*730
|
15000
|
2016
|
In Operation
|
3 Mengxi-Tianjin
|
1000kV
|
2*608
|
24000
|
2016
|
In Operation
|
4 Yuheng-Weifang
|
1000kV
UHVAC
|
2*1049
|
15000
|
2017
|
Under
Construction
|
1 Ningdong-Zhejiang
|
±800kV UHVDC
|
1720
|
16000
|
2016
|
Under
Construction
|
2 Jinbei-Nanjing
|
±800kV UHVDC
|
1119
|
16000
|
2017
|
Under construction
|
3 Shanghaimiao-Shandong
|
±800kV UHVDC
|
1300
|
12800
|
2017
|
Under construction
|
4 Ximeng-Taizhou
|
±800kV UHVDC
|
1620
|
14400
|
2017
|
Under constrcution
|
Figure 3 Paths of the 'Four UHVAC & Four UHVDC' Project