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Assume the AC currents are going in opposite (SAME) directions in a twin pair transmission line. The magnetic fields so created have the effect of forcing the current flow towards the centre (OUTSIDE). The effect is greater with higher frequency. As the copper is not being effectively utilised, the resistance goes up. This effect is distinct from "skin effect". The effect is also greatest if the gap between wires is small. Unfortunately, as of April 2009 an on-line calculator is difficult to find.
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What is signal distortion in transmission lines?
there are some distortion in transmission line : copper loss,dielectric loss,skin effect
What is the effect if capacitance in transmission line is high?
higher phase shift lower impedance
What does inductive load effect on High Voltage transmission line?
the inductive load which is generally use in high voltage transmission line known as transformer. the transformer transform the high voltage to low voltage.
What is meant by radial feeder?
In a power system, a "radial feed" is one where a source is only present at one end of the transmission line. If a source of power is present at both ends, it is said to be a networked line.
What is charging current in transmission lines?
Any two conductors separated by an insulating medium constitutes a condenser or capacitor.In case of overhead transmission lines, two conductors form the two plates of the capacitor and the air between the conductors behaves as dielectric medium. Thus an overhead transmission line can be assumed to have capacitance between the conductors throughout the length of the line. The capacitance is uniformly distributed over the length of the line and may be considered as uniform series of condensers connected between the conductors.When an alternating voltage is applied across the transmission line it draws the leading current even when supplying no load. This leading current will be in quadrature with the applied voltage and is termed as charging current. It must be noted that charging current is due to the capacitive effect between the conductors of the line and does not depend on the load. The strength of the charging currents depends on the voltage of transmission, the capacitance of the line and frequency of the ac supply. It is given by the expressionSignificance of Charging currents:Capacitance effect (responsible for charging currents) of the short transmission lines are negligible. However they are significant in medium and long distance transmission lines.In long distance transmission lines, during light loaded conditions receiving end voltage will be higher than sending end voltage. This is because of the charging currents and capacitive effect of the line
What is proximity effect in transmission line?
The current distribution in a conductor is affected by magnetic flux produced by current flowing in any adjacent conductors as well as by magnetic flux produced by current flowing in the conductor itself. This generally causes the RF to DC resistance ratio to be higher than it would be with only simple skin effect. This effect is very important in radio frequency coils, transmission lines, and most other circumstances where radio frequency currents flow simultaneously in adjacent conductors. It is known as the conductor proximity effect.
What is signal distortion in transmission lines?
there are some distortion in transmission line : copper loss,dielectric loss,skin effect
What is the effect if capacitance in transmission line is high?
higher phase shift lower impedance
What is ferrenti effect?
A rise in voltage occurring at the end of a long transmission line when its load is disconnected.
What does inductive load effect on High Voltage transmission line?
the inductive load which is generally use in high voltage transmission line known as transformer. the transformer transform the high voltage to low voltage.
What is meant by electrical phase?
according to my research a phase in electrical engineering means a single line or a single way of transmission
What are the Advantages of Corona in transmission lines?
Due to corona effect virtually conductor size is increase and therefor resistance in transmission line is decreases.so I2R losses will decreases...
What is meant by proper termination of transmission line?
Proper termination of transmission line means to provide a circuit at the end of the line, often a resistor or an antenna, that matches the characteristic impedance of the line. Incorrect or missing termination causes reflection of the signal back to the transmitter. In best case, you distort the signal. In worst case, you destroy the transmitter.
What is effect to residential or commercial centers?
Commercial property outside the property line, impact the price of residential property, including proximity to schools, essential services and neighborhood amenities.
How do you change transmission line?
how to fix a transmission without taking it a part how to fix a transmission line
What is line charging in transmission?
Transmission Line Charging To initially charge the transmission line, the generator voltage stably controlled from 30% of the rated voltage to 110% of the rated voltage by using AVR. The change-over switch (43CH) for initial transmission line charging is mounted on the operator's desk in the main control room.This Voltage Changes are required because of the Stray capacitance effect at the charging and boosts the Voltage at the other end and the inductance of the line drops the Voltage soon after charging
Do you get DC current directly from the transmission line?
Only if it is a DC transmission line.
