What is Long Transmission line?
Long Transmission Line Lines having length more than 200 km are called long transmission line. As the line constants of the transmission line are uniformly […]
Transmission and distribution of Electrical Power
Primary Distribution system
Primary Distribution system Primary distribution operates at the high voltage such as (3.3,6.6 and 11 KV).Primary distribution is usually carried out by 3-phase,3-wire system.Electric power […]
Difference between ac and dc systems
Comparison between DC and AC system for transmission and distribution Transmission of electric power by high voltage dc system is superior to that by high […]
Substations and its types
Substation Introduction Substation receives the energy transmitted at high voltage from the generating stations and reduces the voltage to a value appropriate for local distribution […]
Three-Wire DC Distribution System
Three-Wire DC Distribution System When the voltage is increased the efficiency of the transmission line increases and the cost of conductor material in feeder cables […]
Skin Effect in Transmission Lines
Skin Effect The distribution of current over the cross section of the conductor is uniform for dc only.An alternating current flowing through a conductor does […]
Bundled conductor used in Transmission line
Bundled conductors Transmission of large amounts of power over long distances,can be accomplished most economically by using extra high voltage(EHV).An increase in transmission voltage results […]
Transposition of lines
what is Transposition of lines? Transmission line transmits bulk power at relatively higher voltages.These lines gives rises to electromagnetic and electrostatic fields of sufficient magnitudes […]
Medium transmission lines
Medium transmission line Transmission line having length between 80 Km and 200 Km and line voltage between 20 KV and 100 KV fall under medium […]
Short transmission lines
Short transmission line Transmission line having the length lesser than 80KM and operating voltage lower than 20 KV falls under short transmission line.The capacitance effects […]