Volta Grande power plant

Volta Grande power plant
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location
Coordinates	20 ° 2 ′ 4 ″  S , 48 ° 13 ′ 23 ″  W Coordinates: 20 ° 2 ′ 4 ″  S , 48 ° 13 ′ 23 ″  W
country	Brazil
place	State of Minas Gerais
Waters	Rio Grande
Height upstream	494.6  m
power plant
owner	Companhia Energética de Minas Gerais (CEMIG)
operator	CEMIG
construction time	1970 to 1974
Start of operation	1974
technology
Bottleneck performance	380 megawatts
Turbines	Kaplan turbines : 4
Others

The Volta Grande power plant ( Portuguese: Usina Hidrelétrica de Volta Grande ) is a run-of-river power plant in Brazil that dams the Rio Grande to the Volta Grande reservoir ( Portuguese : Represa de Volta Grande , also known as Represa de Miguelópolis ). At this point, the Rio Grande forms the border between the states of Minas Gerais and São Paulo . About 10 kilometers northwest of the power plant is the municipality of Conceição das Alagoas , and about 30 km northeast of the city of Uberaba . The municipality of Miguelópolis is located on the south bank of the reservoir .

Construction began in 1970. Operations started in 1974.

Barrier structure

The barrier structure consists of a dam on the left and right side of the river and a dam in between. The maximum height given is 49 or 56 m. The length of the barrier structure is 2329 m. The dam is divided into a machine house and a weir system with flood relief , consisting of ten gates.

Reservoir

With a normal storage target of 494.6 m, the reservoir holds 2.244 billion m³ of water - of which 268 million m³ can be used to generate electricity. The minimum stowage destination at which the machines can still be operated is 493.2 m.

The supervisory agency ONS set the following limits for the outflow from the reservoir: a minimum of 253 m³ / s and a maximum of 5,000 m³ / s.

Various fish species such as Tambaquí or Tucunaré can be found in the reservoir . Below the dam, on the right bank of the river, is the Volta Grande environmental station (port. Estação Ambiental de Volta Grande ), whose tasks include monitoring the water quality and operating a fish farm. It will u. a. Dourado , Jaú , Piapara , Pintado and Piracanjuba are bred.

power plant

With an installed capacity of 380  MW , the Volta Grande power plant is one of the larger hydropower plants operated by the electricity producer CEMIG .

A total of four machines with a maximum output of 95 (or 104) MW each are installed. You are in a machine house on the left side of the dam. The Kaplan turbines were supplied by CGE and the associated generators by Siemens . The switchgear is on the left side of the river.

The power plant is owned and operated by CEMIG.

Others

The World Bank granted a loan of US $ 26.6 million for the construction of Volta Grande on October 15, 1968 .

Web links

• Visão do Vertedouro da Usina Hidrelétrica de Volta Grande. Youtube, accessed October 22, 2014 (Portuguese). 

Individual evidence

1. ↑ ^{a b} A Represa de Miguelópolis SP. (No longer available online.) Jornal Democrata, archived from the original on February 29, 2016 ; Retrieved October 22, 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.  
2. ↑ ^{a b c d e} Usinas hidrelétricas da Cemig. CEMIG , accessed October 15, 2014 (Portuguese).  
3. ↑ ^{a b c d e f} Volta Grande Hydroelectric Power Plant Brazil. Global Energy Observatory, accessed October 22, 2014 .  
4. ↑ usinas bacia do rio grande. CEMIG, accessed on October 22, 2014 (Portuguese): "Volume útil do reservatório (hm3): 268.00"  
5. ↑ ONS RE 3/0105/2012 INVENTÁRIO DAS RESTRIÇÕES OPERATIVAS HIDRÁULICAS DOS APROVEITAMENTOS HIDRELÉTRICOS. (PDF 2.4 MB p. 56) (No longer available online.) Operador Nacional do Sistema Elétrico (ONS), archived from the original on October 31, 2014 ; Retrieved October 22, 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.  
6. ↑ OS TUCUNARÉS DE MIGUELÓPOLIS - 03/05/14. Loucos por Pesca, May 3, 2014, accessed October 22, 2014 (Portuguese).  
7. ↑ Gustavo Nero Mitsuushi: Rio Grande, Rio Grande. tucuna.com.br, accessed October 22, 2014 (Portuguese).  
8. ↑ ESTAÇÃO Ambiental DE Volta Grande. CEMIG, accessed October 22, 2014 (Portuguese).  
9. ^ Hydroelectric Plants in Brazil - Minas Gerais. (No longer available online.) Power Plants Around the World, archived from the original on December 9, 2012 ; accessed on October 15, 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.  
10. ^ Volta Grande Hydroelectric Project (02). Worldbank, accessed October 22, 2014 .