China starts construction on cross-sea power grid
Feb 11, 2007 - Asia Pulse Data
China is working on its first cross-sea
power grid connection project to link the grids
of coastal Guangdong province and the southernmost
island province of Hainan, which would be the world's
longest such project when completed in 2009.
The project will cross the Qiongzhou
Strait, connecting Gangcheng transformer substation
in Zhanjiang city of Guangdong and Fushan transformer
substation in Chengmai county of Hainan with 500
kilovolts alternating current grid.
The investor, China Southern Power
Grid Corporation, will build a 34.7- kilometre benthal
cable and a 144-km trolley wire to connect the two
grids, the longest power grid connection project
in the world when completed, Xinhua news agency
The project with a transmission capacity
of 600,000 kilowatts will cost USD 271 million and
is expected to be completed in the first half of
"Hainan power grid has long been isolated
from the mainland grids. The project will make the
five power grids in south China as a whole," chairman
of board of China Southern Power Grid, Yuan Maozhen
"The power grids can transmit electricity
to each other after the connection project is completed.
It will improve Hainan power grid's safety and efficiency,"
China Southern Power Grid, a state-owned
power grid firm, covers the southern provinces of
Guangdong, Yunnan, Guizhou and Hainan, and Guangxi
Zhuang Autonomous Region, providing electricity
to 230 million people.