Little Goose Power Plant

Little Goose Power Plant
	location
Coordinates	46 ° 35 '8 " N , 118 ° 1' 38" W Coordinates: 46 ° 35 '8 " N , 118 ° 1' 38" W.
country	United States
place	Columbia County , Washington
Waters	Snake River
	f1
	power plant
operator	USACE
construction time	1963 to 1970
Start of operation	1970
	technology
Bottleneck performance	810 megawatts
Standard work capacity	2,900 million kWh / year
Turbines	Kaplan turbines ; 6 × 135 MW
	Others

The Little Goose Dam ( english Little Goose Lock and Dam ) is a hydroelectric power plant in the state of Washington , USA . It is the 15th power plant in the chain of a total of 17 hydropower plants on the Snake River , a left tributary of the Columbia River . The Snake River forms the border between Columbia and Whitman Counties at this point .

Construction work began in June 1963. The power plant went into operation in March 1970. It was built by the United States Army Corps of Engineers (USACE) and is also operated by the USACE. The basis for the construction of the power station was the River and Harbor Act of 1945.

Barrier structure

The barrier is a concrete gravity dam approximately 30 m (100 ft ) high  , to which an earth embankment adjoins on the right side of the river. The lock is on the far left, followed by a machine house and a weir system with eight weir fields in the middle. The top of the wall lies at an altitude of 198  m above sea level. d. M. (651 ft). The total length including the earthfill dam is 809 m (2,655 ft). Of this, 200 m (656 ft) are accounted for by the nacelle, 156 m (512 ft) by the weir system and 100 m (328 ft) by the lock. A maximum of 24,000 m³ / s (850,000 ft³ / s) can be discharged through the weir system.

Reservoir

At the normal reservoir target of 194.4 m (638 ft), Lake Bryan extends over an area of approximately 40.57 km² (10,025  acres ) and over a length of approximately 60 km (37.2  miles ). The minimum congestion destination is 193 m (633 ft), the maximum is 197 m (646.5 ft).

power plant

The Little Goose power plant has an installed capacity of 810 MW . The maximum possible output ( overload capacity ) is given as 932 MW, which, however, can only be generated for a few hours. In 2011, 2.9 billion kWh were generated.

The first three machines were put into operation in 1970. Three more machines were installed by 1978. The six Kaplan turbines each have a maximum output of 135 MW and the associated generators 142  MVA . The nominal speed of the turbines is 90 / min. The maximum flow is 3700 m³ / s (130,000 ft³ / s).

The electricity generated is marketed by the Bonneville Power Administration (BPA). The BPA uses the four lowest power plants on the Snake River as peak load power plants , in particular to compensate for the fluctuating electricity generation from wind farms.

lock

On the left side of the dam is a lock with a length of 204 m (668 ft) and a width of 26 m (86 ft).

Others

There is a fish ladder .

Web links

Commons : Kraftwerk Little Goose - collection of pictures, videos and audio files

Individual evidence

↑ ^a ^b ^c ^d ^e ^f Little Goose Lock and Dam. USACE , accessed October 26, 2015 .
↑ ^a ^b ^c Little Goose Dam and Lake Bryan. USACE, accessed October 26, 2015 .
↑ ^a ^b Power benefits of the lower Snake River dams. (PDF 584 KB) Bonneville Power Administration (BPA), January 2009, accessed on October 20, 2015 .

[us-1] ↑ ^a ^b ^c ^d ^e ^f Little Goose Lock and Dam. USACE , accessed October 26, 2015 .

[nw-2] Little Goose Dam and Lake Bryan. USACE, accessed October 26, 2015 .

[bpa-3] Power benefits of the lower Snake River dams. (PDF 584 KB) Bonneville Power Administration (BPA), January 2009, accessed on October 20, 2015 .