explain the main technical features of electrical power transmission & distribution and main components of it?

Answer 1

Good previous answer on the engineering side, also depending on the type of load served, local distribution requires balancing of "peak loads" and balancing the power factor to correct for highly inductive(motors,etc) or capacitive (computers,etc) loads. Wattless or "reactive" power has to be accounted, for proper operation of three phase systems and is usually measured in power plants with a VAR meter, which measures Volt Ampere Reactive loading not shown on Kilowatt meters.

The main components of the system are:
Generators, Switchgear, Instrumentation and protective relays, Transformers, Capacitors, Reactors, and the towers, insulators, and miles of wires to carry electricity where we want it.

Also in power plants, batteries..a series bank of about 1500ah per 12 v cell to provide contol power backup to switch the motor operated, large circuit breakers of 600 amps and up. The batteries in some plants are also used to flash and strengthen residual magnetism in the exciter for feeding current through the slip rings to the alternator's rotor on generating equipment.

Answer 2

It has been about 20 years since I had a Power Systems course as part of my Electrical Engineering degree. I vaguely recall that the main emphasis was performing transmission line calculations and transformer selection to minimize losses by matching impedances for maximum power transfer.

Answer 3

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