Belesar dam

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Belesar dam
Chantada - panoramio (8) .jpg
location
Belesar dam (Spain)
Belesar dam
Coordinates 42 ° 37 '43 "  N , 7 ° 42' 43"  W Coordinates: 42 ° 37 '43 "  N , 7 ° 42' 43"  W.
country SpainSpain Spain
place Lugo Province
Waters Miño
Height upstream 330  m
power plant
owner Naturgy
operator Naturgy
technology
Bottleneck performance I: 300 MW
II: 20.8 MW
III: 215 megawatts
Turbines II: 2 x 10.4 MW
Others

The dam Belesar ( Spanish Presa de Belesar ) is a dam with hydroelectric power plant in the municipality of Chantada , province of Lugo , Spain . It damms the Miño into a reservoir. The dam is used to generate electricity and protect against flooding. It was built from 1957 to 1963 and inaugurated by Franco on September 10, 1963. The dam is owned by Naturgy operated and run by Naturgy.

Barrier structure

The barrier structure is a double-curved concrete arch dam with a height of 129 (or 132 or 133) m above the foundation base . The top of the wall is at a height of 332 m above sea level . The length of the top of the wall is 500 m. The width of the dam is 29 m at the bottom. The volume is 735,000 m³.

The dam wall has both a bottom outlet and two flood reliefs . A maximum of 160 m³ / s can be discharged via the bottom outlet, and a maximum of 3800 (or 4000) m³ / s via the two flood reliefs together. The design flood is 4000 m³ / s. The flood reliefs are located on both sides of the dam in the area of ​​the abutments .

The problem of concrete swelling as a result of an alkali aggregate reaction (AAR) occurs in the dam wall . Due to the expansion, this leads to deformations and cracks in the concrete of the dam. As a remedial measure, vertical slots may be cut into the dam to reduce the compressive stresses caused by the AAR.

Reservoir

The reservoir

In the normal water level of 330 m, the reservoir (extending Spanish Embalse de Belesar ) and an area of approximately 18.28 (or 19.10 or 20) square kilometers summarizes 640 (or 655) million cubic meters of water; 606 million m³ of this can be used.

power plant

Belesar I

The installed capacity of the power plant is 225 (or 227 277 294 or 300) MW . The three Francis turbines are located in an underground machine house. The average annual production is 732 million kWh .

Belesar II

The installed capacity of the power plant is 20.8 MW; it was built from 2010 to 2013 and inaugurated on October 28, 2013. The two turbines are located in an underground machine house and each have a maximum output of 10.4 MW. The average annual production is 138 million kWh. The cost of the project is given as € 31 million.

Belesar III

Belesar III is a planned pumped storage power plant with an installed capacity of 208 (or 210 or 215) MW. For this purpose, tunnels with a total length of 2100 m, a water tower and two caverns for the machines and transformers are to be built. The reservoir of the Belesar dam is to serve as the upper basin, the reservoir of the Los Peares dam as the lower basin . 28 million m³ of the reservoir are to be used for the pumped storage power plant; this can generate 9 million kWh.

The two Francis pump turbines should each have a maximum output of 107.5 MW and the associated generators 125  MVA . The nominal voltage of the generators is 15.75  kV . In the switchgear , the generator voltage is increased to 220 kV using power transformers. The flow rate is 180 m³ / s in turbine mode and 170 m³ / s in pump mode.

The cost of the project is given as € 63 million.

See also

Web links

Commons : Belesar dam  - collection of images, videos and audio files

Individual evidence

  1. ↑ 50 AÑOS DEL SALTO DE BELESAR. www.galiciaunica.es, March 21, 2014, accessed August 1, 2020 (Spanish).
  2. ↑ a b c d Belesar dam (Spain). www.lombardi.ch, accessed on August 1, 2020 .
  3. ↑ a b Presa de Belesar, un coloso de cemento de 129 m de altura. www.elcorreogallego.es, August 31, 2018, accessed August 1, 2020 (Spanish).
  4. ↑ a b PRESA: BELESAR. Sociedad Española de Presas y Embalses (SEPREM), accessed August 1, 2020 (Spanish).
  5. ↑ a b c d Embalse de Belesar. www.galiciamaxica.eu, March 3, 2016, accessed August 1, 2020 (Spanish).
  6. ↑ a b Presa de Belesar. www.iagua.es, accessed August 1, 2020 (Spanish).
  7. ^ Concrete Swelling in a Double Curvature Dam. oa.upm.es, accessed on August 1, 2020 (English).
  8. ↑ a b c Embalse de Belesar. www.iagua.es, accessed August 1, 2020 (Spanish).
  9. ↑ Embalse: BELESAR. www.embalses.net, accessed August 1, 2020 (Spanish).
  10. ↑ Belesar y Os Peares ganarán and 9% de potencia con cuatro turbinas más. www.lavozdegalicia.es, October 5, 2007, accessed August 1, 2020 (Spanish).
  11. ↑ a b Central Hidroeléctrica de Belesar I. caminoscrviaja.wordpress.com, March 10, 2016, accessed on August 1, 2020 (Spanish).
  12. ↑ Red Elétrica de España. (PDF) www.chebro.es, April 14, 2015, p. 15 , accessed on August 1, 2020 (Spanish).
  13. ↑ a b c Inauguración de la central hidroeléctrica de Belesar II. Www.dinamotecnica.es, November 4, 2013, accessed on August 1, 2020 (Spanish).
  14. ↑ a b c Se inaugura una nueva minicentral hidroeléctrica en el embalse de Belesar, en la que Gas Natural Fenosa ha invertido 31 millones. www.iagua.es, October 28, 2013, accessed August 1, 2020 (Spanish).
  15. ↑ Las espectaculares imágenes de la central hidroeléctrica de Belesar (Naturgy) evacuando agua tras el paso del ciclón Elsa. elperiodicodelaenergia.com, December 24, 2019, accessed August 1, 2020 (Spanish).
  16. ^ Inaugurada la nueva central del embalse de Belesar, que cumple 50 años como "icono del desarrollo hidráulico" de Galicia. www.europapress.es, December 17, 2013, accessed August 1, 2020 (Spanish).
  17. ↑ a b Almacenar electricidad en embalses hidráulicos reversibles. (PDF) www.fundacionnaturgy.org, March 30, 2017, p. 17 , accessed on August 1, 2020 (Spanish).
  18. ↑ a b Pumped storage in Spain. www.waterpowermagazine.com, July 11, 2013, accessed August 1, 2020 .
  19. ↑ a b c Anuncio del Área de Industria y Energía de la Delegación del Gobierno en Galicia por el que se somete a información pública conjunta la solicitud de autorización administrativa previa, la autorización administrativa de construcción y la declaración, en concreto, de utilidad de utilidad la Central Hidroeléctrica Reversible Belesar III y sus infraestructuras de conexión, transporte y evacuación asociadas, en el término municipal de Chantada, provincia de Lugo. Agencia Estatal Boletín Oficial del Estado , December 11, 2012, accessed August 1, 2020 (Spanish).
  20. ↑ a b La optimización de las estructuras hidráulicas de la CH Reversible de Belesar III mediante el uso de la Dinámica de Fluidos Computacional. (PDF) www.ingenieriadelagua.com, accessed August 1, 2020 (Spanish).
  21. ↑ Final design of Belesar III and Los Peares III Hydro Power Projects. (Galicia, Spain). (PDF) subterra-ing.com, pp. 1, 4 , accessed on August 1, 2020 (English).
  22. ↑ Fenosa destina 92 millones a ampliar las centrales de Belesar y Os Peares. www.elprogreso.es, December 12, 2015, accessed August 1, 2020 (Spanish).