Friday, 15 September 2017

good morning friends.........

after long time i have be here because of i am not feeling well ...........

today we will see the over view of power generation ,transmission and distribution of electrical energy
There are three stages of electric power supply  generation, transmission and distribution. Each stage must be understood generally to any electrical engineer and here we will give a general overview of these stages as follows: 
Generation stage: 
Electricity generation is the process of generating electric energy from other forms of energy.


Electrical power starts at the power plant, In almost all cases the power plant consists of a spinning electrical generator. A generator is a machine that transforms mechanical energy into electric power. 


Something has to spin that generator; it might be a water wheel in a hydroelectric dam, a large diesel engine or a gas turbine. But in most cases the thing spinning the generator is a steam turbine 

The steam might be created by burning coal, oil, natural gas or the fission of nuclear fuel. And some generating stations use renewable energy sources like sun & wind.........



Transmission stage: 
Electric-power transmission is the bulk transfer of electrical energy; from generating power plants to substations located near population centers ...

 3-phase power leaves the generator and enters a transmission substation at the power plant . This substation uses large transformers to convert the generator's voltage (which is at the thousands of volts level) up to extremely high voltages for long-distance transmission on the transmission grid. Typical voltages for long distance transmission are in the 155,000 to 765,000 volt range in order to reduce line losses.

The Distribution stage:

Electricity distribution is the final stage in the delivery of electricity to end users. A distribution system's network carries electricity from the transmission system and delivery to consumers .....



thank you for basic article..........

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