Porto Colômbia power station
| Porto Colômbia power station | ||
|---|---|---|
| location | ||
|
||
| Coordinates | 20 ° 9 ′ 18 ″ S , 47 ° 16 ′ 54 ″ W | |
| country |
 Brazil
|
|
| place | Planura municipality , Minas Gerais state | |
| Waters | Rio Grande | |
| Height upstream | 467.2 m | |
| power plant | ||
| owner | Furnas Centrais Elétricas | |
| operator | Furnas Centrais Elétricas | |
| construction time | 1970 to 1973 | |
| Start of operation | 1973 | |
| technology | ||
| Bottleneck performance | 320 megawatts | |
| Standard work capacity | approx. 2,000 million kWh / year | |
| Turbines | Kaplan turbines : 4 × 80 MW | |
| Others | ||
The Porto Colômbia power plant ( Portuguese Usina Hidrelétrica (de) Porto Colômbia ) is a run-of-river power plant in Brazil that dams the Rio Grande to a reservoir ( Portuguese Represa de Porto Colômbia ). At this point, the Rio Grande forms the border between the states of Minas Gerais (MG) and São Paulo (SP). About ten kilometers downstream are the villages of Planura in MG and Colômbia in SP.
Construction of the power plant began in March 1970. The first machine went online in June 1973.
Barrier structure
The barrier structure consists for the most part of a dam with a maximum height of 40 m. The length of the dam crown is 1,652 m and the width of the crown 10 m. The dam crown is at a height of 469.7 m above sea level . The volume of the dam is 2,736,497 m³.
The weir system with flood relief is integrated into a concrete gravity dam . The weir system consists of 9 gates with a width of 15 m and a height of 15.4 m. A maximum of 16,000 m³ / s can be discharged. The gravity dam has a length of 184 m and a volume of 88,011 m³.
Reservoir
With the maximum storage target of 467.2 m, the reservoir extends over an area of around 143 km² and holds 1.525 billion m³ of water. The minimum stowage destination at which the machines can still be operated is 465.5 m. The reservoir target of the reservoir is usually relatively constant, as the water flow of the Rio Grande is controlled by the upstream Furnas power station with the associated Furnas reservoir .
power plant
With an installed capacity of 320 MW, the Porto Colômbia power plant is one of the smaller power plants operated by the electricity producer Furnas Centrais Elétricas . The average annual generation fluctuates slightly: in 2007 it was 2.019 billion kWh and in 2009 it was 2.253 billion kWh. The power plant serves to cover the base load .
The 4 Kaplan turbines , each with a maximum output of 80 MW, are located in a machine house on the right side of the dam. All machines went online from June 1973 to January 1974. The turbines were supplied by Nohab and Bardella , the generators by ASEA . The rated speed of the turbines is 85.7 / min. The associated generators have a nominal voltage of 13.8 kV and a nominal frequency of 60 Hz. The diameter of a rotor is 7.7 m.
In the switchgear , the generator voltage of 13.8 kV is increased to 138 kV using three-phase power transformers. The switchgear is on the right side of the river.
The power plant is owned by Furnas Centrais Elétricas and is also operated by Furnas.
Others
According to the World Bank, the cost of the Porto Colômbia power plant was US $ 63 million (excluding interest during the construction period) or US $ 175 per installed kilowatt . According to the World Bank, this is a low value for a hydropower plant. The project was co-financed by the World Bank. She gave Furnas a loan of US $ 22.3 million (at an estimated total cost of US $ 69.8 million in 1968). The World Bank had previously granted Furnas two loans - US $ 73 million in 1958 for the construction of the Furnas power station and another US $ 96 million in 1965 and 1966 for the construction of the Luís Carlos Barreto de Carvalho power station - and was satisfied with the servicing of the loans by Furnas.
Web links
- Hydroelectric Plants in Brazil - Minas Gerais. Power Plants Around the World, accessed October 2, 2014 .
- Hidrelétrica Porto Colômbia. Youtube, accessed September 30, 2014 (Portuguese).
Individual evidence
- ↑ a b c d e f g h Porto Colômbia Hydroelectric Plant. Furnas Centrais Elétricas, accessed October 2, 2014 .
- ↑ a b c d Porto Colombia Hydroelectric Power Plant Brazil. Global Energy Observatory, accessed October 2, 2014 .
- ↑ Generating capacity. Furnas Centrais Elétricas, accessed September 29, 2014 .
- ^ Brazil - Porto Colombia Hydroelectric Project (English). Worldbank, accessed October 2, 2014 .
- ↑ APPRAISAL OF THE PORTO COLOMBIA HYDROELECTRIC PROJECT OF CENTRAL ELETRICA DE FURNAS SA BRAZIL. (PDF 2.4 MB p. 5) Worldbank, September 20, 1968, accessed on October 2, 2014 (English).
