Serra da Mesa power station
| Serra da Mesa power station | ||
|---|---|---|
| location | ||
|
||
| Coordinates | 13 ° 50 ′ 3 ″ S , 48 ° 18 ′ 16 ″ W | |
| country |
 Brazil
|
|
| place | Minaçu Municipality , Goiás State | |
| Waters | Tocantins | |
| Height upstream | 460 m | |
| power plant | ||
| owner | Furnas Centrais Elétricas | |
| operator | Furnas Centrais Elétricas | |
| Start of operation | 1998 | |
| technology | ||
| Bottleneck performance | 1,275 megawatts | |
| Standard work capacity | 4,000 million kWh / year | |
| Turbines | Francis turbines : 3 × 425 MW | |
| Others | ||
The Serra da Mesa power plant ( Portuguese Usina Hidrelétrica (de) Serra da Mesa ) is a hydropower plant in the Brazilian state of Goiás , which damms the water of the Rio Tocantins to the Serra da Mesa reservoir ( Portuguese : Lago de Serra da Mesa ). The municipality of Minaçu is located approximately 20 kilometers northeast of the power plant .
The beginnings of the project go back to the 1970s. In 1981 Furnas Centrais Elétricas was granted the concession to build hydropower plants on the Tocantins. Construction began in the second half of the 1980s but was interrupted during the reign of Fernando Collor de Mello . The company CPFL completed the construction work and received electricity purchase rights for 30 years amounting to 51.54% of the average electricity generated in the power plant. The first machine went online in September 1998.
The data on the costs of Serra da Mesa vary: they are 1.1 and 1.7 billion US $ .
Barrier structure
The barrier structure consists mainly of an earth embankment dam with a clay core and a maximum height of 154 m. The length of the dam crown is 1,500 m. The volume of the dam is 12,057,558 m³.
The weir system with the flood relief consists of 5 gates with a width of 15 m and a height of 20.4 m. A maximum of 15,000 m³ / s can be discharged. It is to the right of the dam.
Reservoir
With the normal storage target of 460 m (max. 461.5 m at high water) above sea level , the reservoir extends over an area of around 1,784 (or 1,794) km² and holds 54.4 billion m³ of water - 43.25 of which can be Billion m³ are used to generate electricity. The minimum stowage destination at which the machines can still be operated is 417.3 m. The reservoir is the fifth largest by area and the largest by volume in Brazil.
power plant
With an installed capacity of 1,275 MW, the Serra da Mesa power plant is the third largest power plant operated by the electricity producer Furnas Centrais Elétricas . The average annual production fluctuates: in 2007 it was 5.378 billion kWh and in 2009 it was 3.099 billion kWh.
The 3 Francis turbines are located in an underground machine house with a length of 137, a width of 29 and a height of 69.8 m. The turbines were supplied by SADE and the generators by ABB . The nominal speed of the turbines is 120 / min. The associated generators have a nominal voltage of 15 kV and a nominal frequency of 60 Hz. In the switchgear , the generator voltage of 15 kV is increased to 500 kV using single-phase power transformers. The switchgear is on the left side of the river below the dam.
According to the Global Energy Observatory, the power plant is owned by Furnas Centrais Elétricas (48.46%) and CPFL (51.54%); Furnas is specified as the operator. Other sources only speak of a 51.54% power purchase right owned by CPFL.
Others
The company CPFL fought in court to sell 51.54% of the electricity generated in the power plant from April 1, 2014 to April 16, 2028, which corresponds to an annual average of 345.4 MW, to Furnas at a net price of R $ 156.70 per MWh (R $ 182.90 including surcharges) for sale. However, this is below the price of R $ 271 per MWh that CPFL was able to demand according to the current A-0 electricity auction. According to the CPFL, the price on the spot market is up to R $ 822.83 per MWh.
The impoundment of the reservoir began on October 24, 1996 and it took 18 months for the reservoir to fill. During this time, the river bed below the dam dried up over a length of 40 km.
On March 26, 2014, the minimum flow rate of 300 m³ / s was lifted by the national water authority ANA until the end of May in order to raise the water level of the reservoir.
Web links
- Usina Hidrelétrica Serra da Mesa. Youtube, accessed October 4, 2014 (Portuguese).
Individual evidence
- ↑ a b Archibaldo Figueira: Sonho de Serra da Mesa vira poço de pesadelos. A Nova Democracia, July 2004, accessed October 12, 2014 (Portuguese).
- ↑ a b CPFL wins dispute with Furnas and gets power from Serra da Mesa plant. Valor Econômico SA, April 9, 2014, accessed on October 11, 2014 .
- ↑ CPFL leva 51% da energia de Serra da Mesa. (No longer available online.) Centro Nacional de Referências em Pequenas Centrais Hidrelétricas, April 9, 2014, archived from the original on October 18, 2014 ; Retrieved October 12, 2014 (Portuguese). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ a b c d e f g h Serra da Mesa Hydroelectric Plant. (No longer available online.) Furnas Centrais Elétricas, archived from the original on October 7, 2014 ; accessed on October 11, 2014 (English). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ A b Robert Goodland, Environmental Sustainability in the Hydro Industry, p. 89, in IUCN - The World Conservation Union and the World Bank Group. Large Dams: Learning from the Past, Looking at the Future. Workshop proceedings; July 1997
- ↑ a b c d e Serra da Mesa (Sao Felix) Hydroelectric Power Plant Brazil. Global Energy Observatory, accessed October 5, 2014 .
- ↑ a b Dr. Marcelo Pompêo: MAIORES REPRESAS BRASILEIRAS. (No longer available online.) Universidade de São Paulo , archived from the original on August 19, 2014 ; Retrieved October 11, 2014 (Portuguese). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Generating capacity. Furnas Centrais Elétricas, accessed September 29, 2014 .
- ^ CPFL Energia SA (CPL). Reuters, accessed on October 11, 2014 : "As of December 31, 2010, CPFL Geracao de Energia SA (CPFL Geracao), owned a 51.54% interest in the assured energy from the Serra da Mesa power plant."
- ↑ a b CPFL Energia: Announcement to the Market - CPFL Energia and CPFL Geração - Execution of New Agreement of Energy Supply between CPFL Geração and Furnas (Serra da Mesa HPP). Reuters, May 7, 2014, accessed October 11, 2014 .
- ↑ a b Comunicado ao Mercado - CPFL Energia e CPFL Geração - Celebração de Novo Contrato de Suprimento de Energia entre CPFL Geração e Furnas (UHE Serra da Mesa). Reuters, April 16, 2014, accessed October 11, 2014 (Portuguese).
- ↑ a b CPFL fecha contrato de energia de Serra da Mesa e nicht disputará leilão A-0. Reuters, April 16, 2014, accessed on October 12, 2014 (Portuguese): “A CPFL venderá para Furnas, sua sócia na hidrelétrica, a energia referente à sua participação de 51.54 por cento na usina ou 345.4 megawatts médios. [..] O preço da energia fechado em contrato com Furnas é inferior ao preço-teto que a CPFL poderia praticar no leilão A-0, de 271 reais por MWh, ou mesmo ao preço que poderia obter com a venda da eletricidade no curto prazo, que atualmente é de 822.83 reais per MWh. "
- ↑ Serra de Mesa Dam, Brazil. ESA , accessed October 12, 2014 .
- ↑ Ayr Aliski: ANA suspende exigencia de vazão mínima em Serra da Mesa. Estadão, March 26, 2014, accessed October 12, 2014 (Portuguese).
