Problem 4: Consider an interconnected 50-Hz power system that contains four turbine-generator units rated 750 Mw, 500 MW, 220 MW and 110 MW. The regulating constant of each unit is 0.05 per unit based on its own rating. Each unit is operating on 75% of its own rating when the load is suddenly dropped by 250 MW. We shall choose a common base of 500 MW. Calculate the rise in frequency and drop in the mechanical power output of each unit without Load Frequency Control.
Problem 4: Consider an interconnected 50-Hz power system that contains four turbine-generator units rated 750 Mw, 500 MW, 220 MW and 110 MW. The regulating constant of each unit is 0.05 per unit based on its own rating. Each unit is operating on 75% of its own rating when the load is suddenly dropped by 250 MW. We shall choose a common base of 500 MW. Calculate the rise in frequency and drop in the mechanical power output of each unit without Load Frequency Control.
Introductory Circuit Analysis (13th Edition)
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Transcribed Image Text:Problem 4:
Consider an interconnected 50-Hz power system that contains four turbine-generator
units rated 750 MW, 500 MW, 220 MW and 110 MW. The regulating constant of each
unit is 0.05 per unit based on its own rating. Each unit is operating on 75% of its own
rating when the load is suddenly dropped by 250 MW. We shall choose a common base
of 500 MW.
Calculate the rise in frequency and drop in the mechanical power output of each unit
without Load Frequency Control.
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