Power Systems

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An electric power system is a network of electrical constituent used to supply, transmit and use electric power. An example of electric power system is the network that gives a region's homes and industry with power—for sizable regions, this power system is known as the grid and can be widely divided into the generators that supply the power, the transmission system that carries the power from a generating centres to the load centres and the distribution system that feeds the power to nearby industries and homes. Smaller power systems are also found in industry, hospitals, commercial homes and buildings. Direct current power can be supplied by batteries, fuel cells or photovoltaic cells. Alternating current power is typically contribute by a rotor that spins in a magnetic field in a device known as a turbo generator. The speed at which the rotor spins in mixture with the number of generator poles determines the frequency of the alternating current produced by the generator.