Electrical Power Distribution By Shaun Bannon

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Electrical Power Distribution By Shaun Bannon Content 1.1 Introduction 1.2 Overview 1.3 Hydro Power Stations 1.4 Thermal Power Stations 1.5 Nuclear Power Stations 1.6 Diesel Power Stations 1.7 Bibliography 1.1 Introduction A power station consists of several generating stations and transmissions and distribution networks interconnect consumers. The purpose of any power system is to generate electrical energy in sufficient quantities at the best-suited locations, to transmit it to various load centres and then distribute to various consumers and to maintain the quality and reliability of transmission at an economic price. 1.2 Overview Electrical power is normally generated at 11-21kV in a power station. So in order to transmit this…show more content…
A feeder can be either an overhead line or an underground cable. In urban areas the length of 11kV feeders is generally upto 3km, whereas in rural areas the feeder lengths can be upto 20km. A 400 V feeder should never be more than 0.5-1.0km in length as long feeders can unduly lead to low voltage at the consumer end. AC energy is generated by alternators, which require prime movers to drive them, the prime mover maybe a turbine or a diesel engine. Depending on the source from which the prime mover receives the energy, Power stations have the following classifications; 1.3 Hydro Power Stations If huge quantities of water are stored in suitable locations and at calculated heights, then the energy stored in the water can be used to generate electrical power. Water stored at high altitude’s can be made to impinge on the blades of a hydraulic turbine through penstock. This leads to the some of potential and kinetic energy stored in the water and converted into mechanical energy. Since the turbine is mechanically coupled to the alternator, the mechanical energy imparted to the alternator is
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