Porto Primavera

from Wikipedia, the free encyclopedia
Porto Primavera
Satellite image before and after the reservoir was dammed
Satellite image before and after the reservoir was dammed
Tributaries: Rio Paraná
Drain: Rio Paraná
Major cities nearby: Rosana
Porto Primavera (Brazil)
Porto Primavera
Coordinates 22 ° 27 ′ 0 ″  S , 52 ° 57 ′ 0 ″  W Coordinates: 22 ° 27 ′ 0 ″  S , 52 ° 57 ′ 0 ″  W
Data on the structure
Construction time: approx. 1980-2003
Height of the barrier structure : 38 m
Building volume: 14.38 million m³
Crown length: 11,380 m
Power plant output: 1,571 MW
Data on the reservoir
Altitude (at congestion destination ) 259 m
Water surface 2250 km²dep1
Storage space 20,000 million m³
Catchment area 574,000 km²
Design flood : 3350 m³ / s

The Porto Primavera hydropower plant (Portuguese: Usina Hidrelétrica Porto Primavera or Usina Hidrelétrica Engenheiro Sérgio Motta ) was built on Paraná on the border of two states in Brazil. The barrier structure stands between Rosana in São Paulo and Bataiporã in Mato Grosso do Sul , 28 km above the confluence of the Rio Paranapanema in the Parana and below the Três Lagoas reservoir . A large reservoir was created behind it , which is one of the largest on earth. Its maximum water depth is 18.3 m, the average depth 8.9 m.

Construction work on the dam began in the late 1970s. In a first stage in 1998 the water level was raised to 253 m above sea level, in the second stage in 2001 to 257 m. In October 2003 the last of the fourteen turbines went into operation. The 14 Kaplan turbines each have a nominal output of 112.2 MW at a head of 18 m and a flow rate of 555 m³ / s. Together that is 1570.8 megawatts. The first three were put into operation in 1999. Various sources also state the power (or maximum power) of the hydropower plant : 1430, 1540, 1800, 1814.4 or 1815 MW.

The barrier structure , a combination of a dam made of bulk material and a gravity dam , is exceptionally long with a length of more than 10 km. For the length of the building crown, depending on the source, there is the information 10,186, 10,376, 11,380 and 11,835 meters. There are also alternative data for the building volume (37.644 million m³), ​​the storage volume (18,500 million m³) and the catchment area (572,480 km²).

Work was often interrupted and delayed. Construction costs have increased from originally $ 2.5 billion to $ 9 billion. This power plant produces very expensive electricity and, due to the unfavorable geographic and hydrological conditions, it supplies only a fraction of the amount of energy from Itaipú .

See also

Web links