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The article presents information on singularly perturbed systems. Many models of dynamic systems contain small parameters multiplying some of the time derivatives. The impetus for the systematic decomposition of the slow and fast subsystems in singularly perturbed systems can be readily extended to the separate control design of the slow and fast dynamics. As will be shown, the crucial idea is to compensate for the quasi-steady state in the fast variable. A power system dispersed over a large geographical area tends to have dense meshes of power networks serving heavily populated areas and many fewer transmission lines interconnecting these urban centers.