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.
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
Chapter12: Power System Controls
Section: Chapter Questions
Problem 12.5P
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