nine the hydraulic impoundment in cubic met evation at 40 m and hydraulic turbine elevatic

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.38P: Consider a three-phase generator rated 300MVA,23kV, supplying a system load of 240 MA and 0.9 power...
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14. A hydro - storage plant has a 20,000 KW rated capacity, with a utilization factor of 76%. For a 1 1/2 hour
peak, determine the hydraulic impoundment in cubic meters of water required with friction factor loss of
6%. Dam elevation at 40 m and hydraulic turbine elevation of 14 m and tailrace at elevation of 7 m.
Generator efficiency is 92% and turbine efficiency of 85%, evaporation factor of 20%. If the water is
pumped from the lower reservoir with friction factor of 8%, pump efficiency of 76% and motor efficiency
of 85%.
a) How many KW-hr of power is required to pump the water required to carry the peak
b) What is the overall thermal efficiency of the hydro plant.
Transcribed Image Text:14. A hydro - storage plant has a 20,000 KW rated capacity, with a utilization factor of 76%. For a 1 1/2 hour peak, determine the hydraulic impoundment in cubic meters of water required with friction factor loss of 6%. Dam elevation at 40 m and hydraulic turbine elevation of 14 m and tailrace at elevation of 7 m. Generator efficiency is 92% and turbine efficiency of 85%, evaporation factor of 20%. If the water is pumped from the lower reservoir with friction factor of 8%, pump efficiency of 76% and motor efficiency of 85%. a) How many KW-hr of power is required to pump the water required to carry the peak b) What is the overall thermal efficiency of the hydro plant.
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