Kairakkum hydroelectric power station ( Kairak-Kum hydroelectric power station , Friendship of Peoples hydroelectric power station ) is a hydroelectric power station in Tajikistan on the Syr Darya river, in the city of Guliston (until 2015 - the city of Kairak-Kum, hence the name of the hydroelectric power station and reservoir), Sughd region (until 2010 - Leninobad region.). It is part of the Naryn-Syrdarya cascade of hydropower plants, in addition to generating electricity, plays an important role in providing irrigation. The owner of the station is Barki Tajik.
| Kairakkum hydroelectric station | |
|---|---|
 | |
| A country |  Tajikistan |
| River | Syr Darya |
| Cascade | Naryn-Syrdarya |
| Owner | OAHK “Barki Tajik” |
| Status | acting |
| The year the construction began | 1951 |
| Years of input units | 1956-1957 |
| Main characteristics | |
| Annual electricity production, mln kWh | 688 |
| Kind of power plant | dam |
| Design head , m | fifteen |
| Electric power, MW | 126 |
| Equipment specifications | |
| Type of turbines | rotary lobed |
| Number and brand of turbines | 6 × PL-495-VB-500 |
| Flow through turbines, m³ / s | 6 × 177 |
| Number and brand of generators | VTS-700 / 100-48 |
| Power of generators, MW | 6 × 21 |
| Main facilities | |
| Dam type | unpaved |
| Dam height, m | 28 |
| Dam length, m | 1200 |
| Gateway | no |
| Outdoor switchgear | 110 kV, 220 kV |
| On the map | |
Content
- 1 Station design
- 2 History of construction and operation
- 3 notes
- 4 References
Station Design
The Kairakkum hydroelectric station is a low-pressure dam riverbed hydroelectric power station with a hydroelectric power station building combined with spillway structures. The installed capacity of the power plant is 126 MW , the design annual average power generation is 688 million kWh . Station facilities include: [1] [2]
- alluvial soil dam with a length of 1200 m and a maximum height of 28 m;
- the hydroelectric building, combined with surface spillways, length 130 m. Spillways are located above the hydraulic units, include six spans 12 m wide, overlapped by flat gates. The total capacity of spillways is 3960 m³ / s.
In the building of the hydroelectric station, there are six vertical hydraulic units with a capacity of 21 MW each, equipped with PL-495-VB-500 rotary vane turbines operating at a design head of 15 m. The turbines drive the VTS-700 / 100-48 generators. The manufacturer of turbines is the Tyazhmash plant, and the generators are the Uralelectroapparat plant. Electricity is supplied from generators to two groups of single-phase transformers, and from them to open switchgears (outdoor switchgear) of 110 and 220 kV voltage and then to the power system [1] [2] .
The retaining structures of the station form a large Kairakkum reservoir . The reservoir area at a normal retaining level of 513 km² , length 55 km, maximum width 20 km, average depth 8.1 m, maximum 25 m. The design full and useful reservoir capacity is 4.0 and 2.7 km³, respectively, which allows seasonal flow regulation. During operation, a large amount of sediment was deposited in the reservoir, its total volume decreased to 3 km³, useful - to 2.3 km³. The mark of the normal retaining level of the reservoir is 347 m above sea level (according to the Baltic altitude system ), the forced retaining level is 347.5 m, the level of dead volume is 340.6 m [1] [2] .
History of construction and operation
The design of the Kairakkum hydroelectric station began in the 1940s, construction began in 1951. Station hydraulic units were commissioned in 1956-1957.
The Kairakkum hydroelectric station was built for energy and irrigation purposes, but due to a shortage of electricity in the winter, the station operates in the energy mode in winter and spring, and in the irrigation mode in summer and autumn. As of 2008, the Kairakkum hydroelectric power station accounted for 7% of the electricity generated in Tajikistan .
Station equipment is outdated, requires replacement and modernization. In 2019, an agreement was concluded with GE Renewable Energy, providing for the replacement of all hydraulic units of the station by 2023, which will increase the capacity of each hydraulic unit to 29 MW, and the capacity of the entire station to 174 MW [3] .
Notes
- ↑ 1 2 3 Increasing the resilience of the Kairakkum hydroelectric station to climate change . EBRD Date of treatment April 10, 2019.
- ↑ 1 2 3 Dementieva M.E., Shaitanov A.M. Improving the usability of hydraulic structures on the example of the Kairakkum hydroelectric station (Tajikistan) // Vestnik MGSU. - T. 12 , no. 10 . - S. 1098-1106 .
- ↑ GE Renewable Energy led a consortium that will carry out a complete reconstruction of the Kairakkum hydroelectric station . Hydropower Caspian and Central Asia. Date of treatment April 10, 2019.
Links
- Kairak-Kuumskaya hydroelectric station . Barki Tojik. Date of treatment April 10, 2019.