An electric power system is a network of components which have been made to use, supply and transfer electric energy. It is a system which provide electric energy to a region, or area or city residence and commercial industries/ if it has a big area to supply with energy, grid would be used, it is a power system which can divide the power into generators which are to give power, also to the transmission systems which are to carry the power from generators and give it to load centers and to the distribution centers which are to give the power to nearby areas and homes. There are also some small power systems to provide electricity to industries, commercial buildings, hospitals, and homes too. Many of these systems depends on three-phase AC power which a basic large-scale power transmission and deliver the electricity through modern ways in all over the world. There are other special power systems too which do not depend on transmission, these type of systems can be found in aircraft, ocean liners, automobiles and electric rail systems.
All power systems have one or more than one sources of energy. In some it is a part of the system but for other it is just an external source. Fuel cells, batteries or photovoltaic cells can supply the Direct current energy, on the other hand for alternative source there are rotor, this spin in turbo generators which a magnetic field.
These turbine rotors have a big variety of techniques to use to spin them. They can be spin through nuclear energy, or from steam heated using fossil fuel including oil, gas, and coal, or from falling water or wind using power.
Alternating current generators can also produce a number of power phases which depends on the power of poles. The high number of phases leads to a competent supply of power but it will require more facilities of the system. The electricity grid system has connected many generators and operates the load on same frequency and number of phases. 50 or 60HZ are very common but there is another tool to be used.
Loads receive energy from power systems to do their job. This load includes industrial machinery to household machinery. There is limit in power requirement in many loads but in alternative current systems there is a specific frequency and number of phases. The household appliances need single phase to operate with 50 to 60HZ, and they require voltage in between 110 to 260 volts, this voltage depends upon national standards. The wattage identifies the energy requirement in every appliance.
In case of low voltage and high voltage or in there is fluctuation in electricity these appliances can be affected very severely.