Английская Википедия:Daraudi A Hydropower Plant
Шаблон:Infobox dam Шаблон:GeoGroup Daraundi A Hydropower Station (or Daraudi A; Шаблон:Lang-ne) is a 6 MW run-of-river hydro-electric plant located on the Daraundi River in the Gorkha District of Nepal.
Location and water source
The project is located in the former Muchok, Takumajh Lakuribot and Saurpani VDCs of Gorkha District. The flow from Daraundi River is used to generate 6 MW electricity. It has a catchment area upstream from the intake of Шаблон:Convert, and long-term annual average flow at this point of Шаблон:Convert.Шаблон:Sfn Lower down the Daraundi Khola joins the Marshyangdi river at Abun Khaireni about Шаблон:Convert upstream from the tailrace of the Marshyangdi dam.Шаблон:Sfn
Construction
Nil Tara Pvt. Ltd. conducted the feasibility study for the Daraudi-A Hydroelectric project. Orient Consult Pvt. Ltd. reviewed and revised the study, including changing the headrace canal to a tunnel and revisions to the layout. The revised design would give installed capacity of 6.5 MW and would deliver 35.51 GWh per year.Шаблон:Sfn
Kalika Construction began work in July 2013. In December 2013 the project director reported that work had begun on the intake structure, sedimentation site and office camp, and expected completion within one and a half years. About 200 people were employed on the project.Шаблон:Sfn The target for completion was July 2015, but delays were caused by earthquakes and blockages. On 8 September 2016 the project began trial electricity generation.Шаблон:Sfn The plant started delivering electricity from 2073-08-12 BS (28 October 2016). It was inaugurated by Pushpa Kamal Dahal (Prachanda), former prime minister of Nepal.Шаблон:Sfn
Technical
The project has two trapezoidal coffer dams, with lengths of Шаблон:Convert and Шаблон:Convert and a height of Шаблон:Convert above the bed of the river. A concrete undersluice dam has one bay with a vertical lift gate, a Шаблон:Convert long weir with a maximum height from foundation to crest of Шаблон:Convert.Шаблон:Sfn A Шаблон:Convert long concrete weir has a maximum height from foundation to crest of Шаблон:Convert The desander has four intake bays with vertical lift gates and is Шаблон:Convert long, Шаблон:Convert wide and Шаблон:Convert deep. It was designed to discharge Шаблон:Convert.Шаблон:Sfn
From the desander there is a Шаблон:Convert reinforced concrete canal with a slope of 1:1000 and cross section of Шаблон:Convert. There is a Шаблон:Convert canal siphon at Sota/Jhyalla Khola and a Шаблон:Convert pipe siphon at Chainage. The forebay has a surface area of Шаблон:Convert and capacity of Шаблон:Convert, with an Шаблон:Convert spillway to Syangdi Khola.Шаблон:Sfn
The powerhouse is in Chanaute.Шаблон:Sfn A Шаблон:Convert penstock pipe with diameter Шаблон:Convert leads from the forebay to the powerhouse. The gross head from the forebay is Шаблон:Convert. The power station holds two horizontal axis Francis turbines with rated capacity Шаблон:Convert connected to two generators with capacity 3.2 MW. From the switch yard the power is transmitted over a Шаблон:Convert 33kV single circuit line to the Gorkha substation.Шаблон:Sfn
Impact
It was assumed that the Daraundu hydropower project and dam would obstruct migration of fish and severely reduce their population.Шаблон:Sfn The project required acquisition of about Шаблон:Convert of land, and including improving Шаблон:Convert of road and building a Шаблон:Convert road to the dam site. Three households were relocated.Шаблон:Sfn The project reduced water available for irrigation at some sites, causing much resentment by farmers.Шаблон:Sfn The farmers at Daraundi A expected road improvements and an electricity supply from the project, but received neither. The project developers stated that these things were the responsibility of the government.Шаблон:Sfn
Ownership and finance
The plant is developed and partially owned by Daraundi Kalika Hydro, an Independent Power Producer.Шаблон:Sfn As of 2018 the company was listed in a World Bank report as being one of the hydropower companies operating after 2010 that had not issued local shares.Шаблон:Sfn The main investor is Global IME Bank.Шаблон:Sfn
The project cost Rs 1.30 billion.Шаблон:Sfn Pricing would be Rs8.4 per kilowatt hour in the dry season, and Rs4.8 per kilowatt hour in the wet season. A ten-year payback was expected.Шаблон:Sfn The generation licence will expire in 2104-02-15 BS, after which the plant will be handed over to the government. [1] The power station is connected to the national grid and the electricity is sold to Nepal Electricity Authority.[2]
See also
References
Sources
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- Английская Википедия
- Hydroelectric power stations in Nepal
- Gravity dams
- Run-of-the-river power stations
- Dams in Nepal
- Irrigation in Nepal
- 2016 establishments in Nepal
- Buildings and structures in Gorkha District
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