Hàm Thuận – Đa Mi hydroelectric power stations

Hàm Thuận
Location of Hàm Thuận in Vietnam
Country	Vietnam
Location	Hàm Thuận Bắc
Coordinates	11°19′34″N 107°56′01″E
Status	Operational
Construction began	1997
Opening date	2001
Owner(s)	Vietnam Electricity
Dam and spillways
Type of dam	Rockfill, center impervious core
Impounds	La Ngà River
Height	93.5 m (307 ft)
Length	686 m (2,251 ft)
Reservoir
Creates	Hàm Thuận Reservoir
Total capacity	695,000,000 m^3 (563,000 acre⋅ft)
Surface area	25.2 km^2 (9.7 sq mi)
Power Station
Operator(s)	Da Nhim – Ham Thuan – Da Mi Hydropower Joint Stock Co.
Commission date	2001
Type	Conventional
Turbines	2 X 150 MW
Installed capacity	300 MW (Hàm Thuận)

Đa Mi
Country	Vietnam
Location	Hàm Thuận Bắc
Coordinates	11°14′22″N 107°50′17″E
Status	Operational
Construction began	1997
Opening date	2001
Owner(s)	Vietnam Electricity
Dam and spillways
Type of dam	Rockfill
Impounds	Đa Mi River
Height	72 m (236 ft)
Reservoir
Creates	Đa Mi Reservoir
Total capacity	141,000,000 m^3 (114,000 acre⋅ft)
Power Station
Operator(s)	Da Nhim – Ham Thuan – Da Mi Hydropower Joint Stock Co.
Commission date	2001
Type	Conventional
Turbines	2
Installed capacity	175 MW

The Hàm Thuận – Đa Mi Hydroelectric Power Complex is a cascade of two hydroelectric power stations in Hàm Thuận Bắc District of the central region of Vietnam. It is operated by Da Nhim – Ham Thuan – Da Mi Hydropower Joint Stock Co., a subsidiary of Vietnam Electricity.[1][2] The same company also operates the older Đa Nhim Hydroelectric Power Station.

History

A feasibility study of the project was conducted by the Vietnamese government in 1991.[3] Construction began in 1997 and both stations were opened in 2001.[4] The main contractors of the project were Tomen Corporation, Ansaldo Energia, Fuji Electric, Hitachi Zosen Corporation, SsangYong, Hyundai Corporation, Maeda Corporation, Kumagai Gumi, Astaldi, Kukdong Engineering & Construction Co Ltd., and Nissho Iwai Corporation. Consulting services were provided by Electric Power Development Company and Nippon Koei. The project cost ¥70.145 million, of which 59.623 million was borrowed from the Japan Bank for International Cooperation.[3]

Hàm Thuận

The Hàm Thuận dams are located on the La Ngà River and consist of one main dam and four auxiliary dams. The main dam is a rockfill, center impervious core type of dam. Its height is 93.5 metres (307 ft) and length is 686 metres (2,251 ft). Auxiliary dams are of the earthfill homogeneous type. The Hàm Thuận dams create the Hàm Thuận reservoir with a surface area of 25.2 square kilometres (9.7 sq mi) and active capacity of 523,000,000 cubic metres (424,000 acre⋅ft).[5] The maximum capacity is 695,000,000 cubic metres (563,000 acre⋅ft).[3] The main dam is located at 11°19′34″N 107°56′1″E and the power station is located at 11°17′18″N 107°52′19″E.

The Hàm Thuận power station has an installed capacity of 300 MW.[4][5][6][7] It consists of two units with a capacity of 150 MW each.[3]

Đa Mi

The Đa Mi Dam impounds the La Nga River approximately 2 km south of the Đa Mi lake. The main dam is a 72-metre (236 ft) high rockfill dam and it creates the Đa Mi Reservoir with a maximum capacity of 141,000,000 cubic metres (114,000 acre⋅ft).[3] The reservoir is daily regulated from the Hàm Thuận Reservoir, approximately 6 km further North-East.[5] The main dam is located at 11°14′22″N 107°50′17″E.

The Đa Mi power station is located 10 kilometres (6.2 mi) downstream from Hàm Thuận station at 11°13′9″N 107°50′1″E.[4][5] The power station has an installed capacity of 175 MW, consisting of two units each with a capacity of 87.5 MW.[3]

The complex also provides water to the Trị An Hydroelectric Power Station downstream of the Đa Mi power station along the La Nga River: near to where it originally joined the Đồng Nai river.[3]

References

1. "Company Overview of Da Nhim - Ham Thuan Hydro Power Plant". Bloomberg Businessweek. Archived from the original on February 15, 2013. Retrieved 2013-01-13.
2. "Da Nhim-Ham Thuan-Da My Hydropower JSC set up". Thoi Bao Kinh Te. Intellasia News Services. 2011-09-19. Archived from the original on 2012-07-31. Retrieved 2012-01-13.
3. Vietnam–Japan Joint Evaluation Team 2008 (November 2008). Ham Thuan – Da Mi Hydropower Project (PDF) (Report). JICA. Archived from the original (PDF) on 2013-01-21. Retrieved 2013-01-15.
4. Pham Hong Giang (2010). "Hanoi 2010: Dams and Sustainable Water Resources Development". HRW-Hydro Review Worldwide. 18 (1). PennWell Corporation. Retrieved 2013-01-13.
5. "Ham Thuan - Da Mi Hydropower Project". Vietnam National Committee on Large Dams and Water Resources Development. Archived from the original on 2012-12-13. Retrieved 2013-01-13.
6. Báo Công an nhân dân: cơ quan của Bộ công an, 1996-2000 - Page 758 Vietnam. Bộ công an - 2002 "Công trình xây dụng Nhà máy thủy điện Hàm Thuận - Đa Mi được Thủ tướng Chính phủ phê duyệt luận chứng kinh tế kỷ thuật tại Quyết định số 248/TTg ngày 10-6-1994."
7. DHD Đa Nhim – Hàm Thuận – Đa Mi Joint Stock Power Company Từ ngày 19/01/2012 đến 16/02/2012 đội sửa chữa của TTDVKT thuộc Công ty Cổ phần Thủy điện Đa Nhim – Hàm Thuận – Đa Mi đã tiến hành xử lý sự cố độ rung, độ đảo tăng cao của tổ máy số 2 Nhà máy Thủy điện Bảo Lộc"