a. Explain how the output power of a turbine-generator operating in a constant frequency system is controlled by adjusting the setting of the governor. Show the effect on the generator power-frequency curve. b. Generator A of rating 200 MW and generator B of rating 350 MW have govDernor droops of 5 and 8%, respectively, from no-load to full-load. They are the only supply to an isolated system whose nominal frequency is 50 Hz. The corresponding generator speed is 3000 r.p.m. Initially, generator A is at 0.5 p.u. load and generator B is at 0.65 p.u. load, both running at 50 Hz. Find the no load speed of each generator if it is disconnected from the system. c. Also determine the total output when the first generator reaches its rating.

a. Explain how the output power of a turbine-generator operating in a constant frequency system is controlled by adjusting the setting of the governor. Show the effect on the generator power-frequency curve. b. Generator A of rating 200 MW and generator B of rating 350 MW have govDernor droops of 5 and 8%, respectively, from no-load to full-load. They are the only supply to an isolated system whose nominal frequency is 50 Hz. The corresponding generator speed is 3000 r.p.m. Initially, generator A is at 0.5 p.u. load and generator B is at 0.65 p.u. load, both running at 50 Hz. Find the no load speed of each generator if it is disconnected from the system. c. Also determine the total output when the first generator reaches its rating.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

a. Explain how the output power of a turbine-generator operating in a constant
frequency system is controlled by adjusting the setting of the governor. Show the
effect on the generator power-frequency curve.
b. Generator A of rating 200 MW and generator B of rating 350 MW have govDernor
droops of 5 and 8%, respectively, from no-load to full-load. They are the only supply
to an isolated system whose nominal frequency is 50 Hz. The corresponding
generator speed is 3000 r.p.m. Initially, generator A is at 0.5 p.u. load and generator
B is at 0.65 p.u. load, both running at 50 Hz. Find the no load speed of each generator
if it is disconnected from the system. c. Also determine the total output when the first
generator reaches its rating.

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