---Vietnam Thai An Hydropower Station
designed by HRC's affiliated company, Zhejiang Zhongzhou
Planning & Design Co., LTD for Water Conservancy and
Hydropower, was officially put into grid-connected operation
on September 29, 2011.
Located in Ha Giang Province in the
northeast part of Socialist Republic of Vietnam, Thai
An Hydropower Station is on the middle and lower reach
of Mien River, a first level tributary of Lo River. The
dam site is located at east longitude 105¡ã03¡äand north
latitude 22¡ã58¡ä40¡å, in Thai An Town of Quan Ba County
in Ha Giang Province. The power plant is 3.7km away from
the dam in its lower stream, 34 km away from the capital
of Ha Giang and 362 km away from Ha Noi, the capital of
Vietnam. A 10km-long road connects the dam site and the
power plant. The catchment area of the dam site is 1494
km2, 890 km2 of which is within the territory of People's
Republic of China.
The main objective of the project is
power generation. The design water head of the power station
is 186m, equipped with two verticalis Francis turbines
with the installed capacity of 2¡Á50MW. The normal capacity
of the reservoir is 3,540,000 m3, and the total capacity
is 6,300,000 m3.
The major construction includes: concrete
gravity dams (including the spillway, and the maximum
dam height is 47.2m), upper horizontal diversion section
of the tunnel (length: 3002m), surge tank, vertical shaft,
lower horizontal section of the tunnel, power house and
110kV step-up substation, etc.
Thai An Hydropower Station is connected
to 220kV Thai An Substation with two 110kV loops, and
4.7km for each loop in length.
Thai An Hydropower Station is a key
project of Ha Giang Province, Vietnam. Its successful
connection to the grid for power generation effectively
relieved the shortage of power supply in northeast part
of Vietnam. (2011-12-27)
