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Abstract Electric power systems are usually operated at or near a predefined angular frequency; nevertheless they may suffer the presence of other frequencies due to various reasons. The detrimental effect of the presence of these unwanted frequencies can be alleviated by increasing the normal natural system damping to these frequencies through a process of reactive power control. It is the interest of this work to present a theoretical study to the feasibility of suppressing the lower frequency voltage component oscillations through a process of continuous switching on shunt reactive elements. Results of a comparative study between system voltage response when undergoing distrubances in the absence of system control and in the presence of system control are presented under various modes of switching and the validity of the idea is established. |