Tis Abay Power Plants
| Tis Abay Power Plants | ||
|---|---|---|
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| location | ||
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| Coordinates | 11 ° 29 '9 " N , 37 ° 35' 21" E | |
| country | Ethiopia | |
| place | Tissisat | |
| Waters | Blue Nile | |
| Height upstream | 1634 m | |
| power plant | ||
| operator | EEPCO - Ethiopian Electric Power Corporation | |
| Start of operation | 1964 or 2001 | |
| technology | ||
| Bottleneck performance | 11.4 or 73 megawatts | |
| Others | ||
The Tis Abay power plants are two hydropower plants in Ethiopia on the upper reaches of the Abbai ( Abay or Abbay in English ), as the Blue Nile is called in Ethiopia, with which the water flowing from Lake Tana via the Abbai is used to generate electricity.
location
Both power plants are located on the right bank of the Abbai next to the town of Tis Issat about 30 km downstream from Bahir Dar or below the outflow from Lake Tana, which is regulated by the Chara-Chara weir . Both power plants use the same terrain as the nearby Tisissat waterfalls and withdraw a large part of the river water from them.
Power plants
Tis Abay I
The Tis Abay I power plant originally received the water that flows freely from Lake Tana and is not dammed in the river via a channel from the Abbai, from which it flows in three underground pressure pipes about 50 m long to the machine house ( 11 ° 29 ′ 9, 5 " N , 37 ° 35 '23.1" E ). It has an installed capacity of 11.4 MW. The power station, which went into operation in 1964, had only a small impact on the falls ( 11 ° 29 ′ 26.3 ″ N , 37 ° 35 ′ 16 ″ E ).
Chara-Chara-Wehr
1995-1996 the first consisting of 5 goals section of the was chara-Chara- weir built ( 11 ° 37 '0 " N , 37 ° 24' 37" O ) to the strong fluctuations of the height to compensate the water level due to the rainy season. With the Chara-Chara weir , the water level in the lake can be reduced from its lowest level at 1784 m above sea level. d. M. by 3 m to 1787 m above sea level. d. M. to be increased. Together with a 0.5 m high water overflow, a maximum regulation height of 3.5 m is possible. If the lake surface is assumed to be 3000 km², this results in a theoretical storage volume of around 10,500 million m³.
The Chara-Chara weir was expanded to include a second weir with 2 gates in connection with the construction of Tis Abay II. Since the commissioning of the Tana-Beles power plant in 2010, the Chara-Chara weir has not only regulated the runoff from Lake Tana into the Abbai and thus the amount of water available for the Tis-Abay power plants and the waterfall, but also the amount of runoff available for the Tana Beles power plant, for which a second drain from Lake Tana was created.
Tis Abay II
The Tis Abay II power plant uses the same inflow channel as Tis Abay I , but it has been extended by 1.5 km ( 11 ° 29 ′ 19.5 ″ N , 37 ° 35 ′ 59.6 ″ E ). Two 115 m long pressure pipes with a diameter of 4.6 m go from the intake structure to the nacelle 53 m below. The two Francis turbines each have an installed capacity of 36.5 MW. The maximum water flow is 2 × 75 m³ / s. The power plant was built between 1998 and 2001, u. a. from Energoprojekt - Niskogradnja, China Wanbao Engineering Corporation, Alstom and Spie.
Map with all coordinates of Kraftwerke: OSM | WikiMap
See also
- List of the largest reservoirs on earth
- List of power plants in Ethiopia
- List of dams in the world (Ethiopia)
Individual evidence
- ^ Tis Abay I Hydroelectric Power Plant on Global Energy Observatory
- ↑ 1964 is the date usually mentioned when Tis Abay I was put into operation , some sources, including EEPCO and Thomas P. Ofcansky, David H. Shinn: Historical Dictionary of Ethiopia name 1953 as the date of commissioning.
- ^ Matthew McCartney, Tadesse Alemayehu, Abeyu Shiferaw and Seleshi Bekele Awulac: Evaluation of Current and Future Water Resources Development in the Lake Tana Basin, Ethiopia IWMI Research Report 134, International Water Management Institute, pp. 13 and 14
- ↑ Melkamu Amare Aragie: Reservoir Operation and Establishment of Operation Rules for Lake Tana ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. Dissertation from January 2005 at Addis Ababa University, School of Graduate Studies, Faculty of Technology, Department of Civil Engineering, p. 1
- ↑ Melkamu Amare Aragie assumes a lake surface of 3110 km², which fluctuates greatly because of the often flat banks.
- ↑ Tis Abay II Hydroelectric Power Plant Ethiopia on Global Energy Observatory
- ↑ Tis Abay II Hydroelectric Power Plant, Ethiopia ( Memento of the original from February 22, 2014 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. on the website of Energoprojekt - Niskogradnja
- ^ Abebe Tesfaye: Tis Abay II Hydroelectric Project . Ethiopian Association of Civil Engineers - EACE Bulletin Vol 2, No 1,2000
