This paper now consists over all view of power systems. This paper contains introductionabout power system, superiority of electrical energy, Generating of electrical power using bydifferent natural sources i.e (Hydro electrical plant, thermal power plant, nuclear power plants);Transfer the electrical power by using transmission and distribution lanes. And what are the mainparts in transmission lines. i.e(conductors, insulators, poles) etc., define grid input and grid output. And also it consist of history about transmission lines distribution lines, transmission linesand distribution line figures, are what are the main protective equipments in power system.
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