الفهرس 
Comparison of Different Expressions for Regime Parameters of the Power SystemOnly 14 pages are availabe for public view
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Abstract
This thesis follows the recent trends of using the
practical methods to calculate the transient stability of
power systems and to obtain the type and parameters of
automatic excitation regulators which secure a aatn sfact orLLy
transient performance of power systems.
There are always discrepancies between both the
laboratory results~ the performance of actual power
systems and the results of calculations. These descrepancies
are mainly due to the unavoidable errors in data about the
, ,
power systems as ’well as in the calculating procedure
itself.
For the above mentioned reasons~ the author has developed
comparative studies for the various methods of calcu_
lating the transient stability. A pronounced interest is
given to practical methods of calculations. l!;rrorestimation
is carried out for the different methods of calculation. An
extensive experimrntal laboratory work was carried out on a
h
sync’ronous machine connected to an infinite bus through a
network specially designed to simulate the transrnlssion
system. The author has also developed a more accurate
method to calculate the transient stability of power systems.
This method is based on Park’s differential equations of
all the power system elements. The laboratory results and the results of calculation of this accurate method have
been used as a criterion for measuring the accuracy of
the different practical methods of calculation. ~’he
author has proposed a universal method for calculating
the transient stability of regulated power systems composing
an equivalent generating station operating on an infinite
system through complex transmission network. The author
has thoroughly investigated the effect of tne fast acting
voltage regulators~ automatic excitation forcing and
automatic speed regulators on transient stability of power
systems.
This work necessitated the design and execution of
three different programs on the (IBM 1620) electronic
-
computer at the National Planning Centre and the (I C 1
1905 E) computer at the Scientific Computation Centre of
Cairo University. These programs enabled the author to
obtain the most suitable fast acting voltage regulators
and the proper tim0 of application and removal of excitation
forcing in order to obtain the optimum performance of power
systems under abnormal operating conuitions.
After comparing the different methods of approach
for studying the transient stability of the unregulated power
syst ems , the investigations were extended to power systems
equipped with both automatic speed and voltage regulators.