In the remote south-western province of Yunnan, some 2000km from Beijing and
Shanghai, Sino Hydro is constructing another vitally important piece of China’s renewable energy program.
The Xiang Jia Ba dam and hydropower scheme is the nation’s third largest hydropower system and another major step forward in China’s sustainable energy and water resource management strategies.
To build this dam, Sino Hydro chose Baldor’s CST (Controlled Start Transmission) as the best drives solution.
The company has installed 13 Baldor CST Drives and 2 CSB Braking units to deliver some 60 million tons of gravel over 31km on five conveyor flights, laid through 29km of tunnels.
The Baldor CST (Controlled Start Transmission) is a patented 2-in-1 drive that combines a planetary gear reducer and a hydro-viscous clutch specifically engineered to deliver and synchronize power from multiple drives, and to control acceleration of high-inertia loads such as long-haul conveyors.
There are more than 2000 CST units in operation around the world with 1433 of these in current operation throughout China, with nearly 200 in operation around Australia.
CSTs have a proven track record on conveyors up to 30km in length, in coal, gold, iron ore, copper and gravel mining operations, cement and power generation, as well as bulk handling port facilities.
When completed in 2015, the 30.7 billion kWh/year of electricity that will be generated
by the Xiang Jia Ba hydro scheme will replace the equivalent of burning 14 million tons of coal per year.
The follow-on effect of this renewable energy is also a significant reduction in emissions, equivalent to 25 million tons/y of carbon dioxide, 170,000 tons/y of nitrogen dioxide and 300,000 tons/y of sulfur dioxide.
Xiang Jia Ba will begin generating power in 2012 and the power will be transported by high tension power lines to China’s central and eastern provinces.
As well as providing power, the 900+ million cubic meter reservoir on the Jin Sha Jiang River will help cities like Chongqing, Zhouzhou, Yibin and Shuifu (where the dam is located) and others to achieve national flood prevention standards.
It will also provide water to irrigate approximately 3.7 million Mu (250,000ha) of land in 14 downstream regions.
Baldor Australia Pty Ltd