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During peak power demand periods, the water is allowed to flow back from the lake through the shafts to the eight turbines causing the pumps to act as generators. The Muddy Run electrical machinery was designed by the noted engineer Eugene C. Whitney of Westinghouse Electric Company, who designed the machinery for the Grand Coulee Dam #3 ...
During periods of peak demand water is released to generate power. Electrical generation can begin within two minutes with peak electric output of 1872 MW achieved in under 30 minutes. Maximum water flow is over 33 million US gallons (120,000 m 3) per minute. This process was designed to level the load of nearby nuclear power plants on the grid.
This is the same principle as that which allows birds to safely sit on power lines. [3] When the work is completed, the process is reversed to remove the worker safely from the wire. Barehand working provides the lineworker with greater dexterity than the hot stick method, and may be the preferred option if conditions permit it. [4]
A PSH system stores energy in the form of gravitational potential energy of water, pumped from a lower elevation reservoir to a higher elevation. Low-cost surplus off-peak electric power is typically used to run the pumps. During periods of high electrical demand, the stored water is released through turbines to produce electric power.
Several test runs were made on the Evanston Subdivision from Ogden to Evanston (76 miles), and it was found that a Big Boy could consume 11 tons of coal and 12,000 gallons of water an hour operating at full throttle, producing 6,290 drawbar horsepower at 41.4 mph. Designed to haul 3,600 tons up the 1.14% ruling gradient over this subdivision ...
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