ENHANCEMENT OF DAMPING OF SYNCHRONOUS GENERATORS AND CONDENSERS
Date
1970-05
Authors
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ORCID
Type
Degree Level
Masters
Abstract
An alternating current power system is semi-rigid and angular changes in voltages or shaft positions result from changes in load. Power systems are inherently lightly damped and changes in voltage or power give rise to oscillations which may be sustained and limited or may lead to system failure due to loss of synchronism. System oscillations are reflected in the shaft speed, the terminal voltage, the real power, the reactive power and the line current of each generator or motor.
Extra damping can be introduced electrically through appropriate feedback into the generator exciter circuit. A great deal of research has been done on electrical damping, the results of which dominate the recent papers on power system stabilization. Currently investigations by industry are centred around finding the feedback signal that yields the highest damping.
This thesis is a report of digital computer studies carried out by the author on systems which are now being employed by industry on a trial basis. Two state space models, simulating a hydraulic turbine-generator and a synchronous condenser from the Saskatchewan Power Corporation System are checked for stability to determine the relative merits of the various damping enhancement networks.
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Degree
Master of Science (M.Sc.)
Department
Electrical Engineering