This thesis presents a mathematical approach for raising the power steady state stability limit by adding series capacitive compensation to a transmission line. The effect of series capacitive compensation and degree of compensation were investigated in detail. The power system studied includes an automatically controlled power system, IEEE Type I. The results of the actual and theoretical steady state stability limits for a given series capacitance location and degree of compensation were obtained by applying the frequency domain technique. The natural frequencies of each compensated power network were examined. The best location for series capacitive compensation is proposed which is the midpoint of the MSU-1 and MSC-7040 lines. At this location, the actual and theoretical power steady state stability limits were obtained and compared for different degrees of compensation and system operating voltages.
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