Correct Answer - Option 4 : central stations
The electrical energy available from central stations is meant for general sale to the customers who wish to purchase it.
Concept:
The electrical power system consists of three major components:
- Power generation
- High voltage transmission grid
- Distribution system
Electric power generation is the process of generating electric power from sources of primary energy.
A transmission network is a high-voltage system for the transfer of electric power. It consists of transmission lines, substations and switching substations.
Electric power distribution is the final stage in the delivery of electric power; it carries electricity from the transmission system to individual consumers.
Feeders:
- A feeder is a conductor that connects the substation to the area where power is to be distributed.
- Generally, no tapings are taken from the feeder so that the current in it remains the same throughout it.
- The main consideration in the design of a feeder is the current-carrying capacity.
Booster: Booster is a low voltage high current series wound DC generator inserted into a DC circuit to add or inject a certain voltage proportional to the circuit current. The main purpose of providing a booster in the power system is to compensate for the voltage drop of the feeder.
Service mains: It is a small cable that connects the distributor conductor at the nearest pole to the consumer's end.
Substation: The electrical substation is the part of a power system in which the voltage is transformed from high to low or low to high for transmission, distribution, transformation, and switching. The power transformer, circuit breaker, bus-bar, insulator, lightning arrester are the main components of an electrical substation.
