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Q.

What is an Electrical substation ?

Tags: food, technology, electrical substation
Asked by truth exposed, 16 Sep '13 11:16 am
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Answers (2)

 
1.

A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. Between the generating station and consumer, electric power may flow through several substations at different voltage levels.
Answered by anil garg, 16 Sep '13 11:22 am

 
  
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2.

Substations are a familiar sight alongside highways and in cities. Substations take the electricity from power plants and from the transmission lines and transform it from high to lower voltage. They distribute electricity to consumers and supervise and protect the distribution network to keep it working safely and efficiently, for example by using circuitbreakers (the industrial strength equivalent of the humble fuse) to cut power in case of a problem.
Substations are often classed according to the switchgear used to protect their circuits.
Air-insulated switchgear (AIS ) used to be the most common design, but this requires a lot of space and for higher voltages is only feasible outdoors. Even then, AIS may be unsuitable or undesirable in certain locations, such as residential areas.
Gas-insulated switchgear (GIS ) may be more expensive if only the unit cost is compared, but is safer and needs less maintenance. The fact that GIS units are five times smaller than AIS means cost s ...more
Answered by aflatoon, 20 Sep '13 09:57 am

 
  
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