What is conductor inductance?
Inductance is the tendency of an electrical conductor to oppose a change in the electric current flowing through it. The flow of electric current creates a magnetic field around the conductor. The field strength depends on the magnitude of the current, and follows any changes in current.
What is loop inductance in transmission line?
A Inductance of Single Phase Two Wire System consists of two parallel conductors which form a rectangular loop of one turn. When an alternating current flows through such a loop, a changing magnetic flux is set up. The changing flux links the loop and hence the loop (or single phase line) possesses inductance.
How to calculate the inductance of a phase line?
Considered a single phase line consisting of two conductors (phase and neutral) a and b of equal radius r. They are situated at a distance D meters. The cross sections of conductors are shown in the diagram below. Let the current flow in the conductors are opposite in direction so that one becomes return path for the other.
How is the inductance of a transmission line determined?
Where, d is the distance between the central axis of conductors within the bundle. In the three phase transmission line, three conductors are parallel to each other. The direction of the current is same through each of the conductors. When they carry the current of the same magnitude “I”, they are in flux linkage with each other.
How is inductance obtained by using flux linkages?
The principle of obtaining inductance per phase by using the flux linkages of one conductor is utilized once again. If the line is unsymmetrical and it remains untransposed, the inductance for each phase will not be equal (transposition of a line occurs when phases a, b, and c swap positions periodically).
How to calculate the self inductance of a coil?
Suppose a coil with N number of turn is linked by flux Φ due to current I, then, But for transmission line N = 1. We have to calculate only the value of flux Φ, and hence, we can get the transmission line inductance.