Transmission System

Causes of Corona Effect

When we apply an alternating potential difference across two conductors whose spacing is large as compared to their diameters, then the atmospheric air surrounding the conductors is subjected to electrostatic stresses. At low p.d. between the conductors, there is no change in the condition of the air around the conductors. However, if we increase the …

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Proximity & Skin Effect in Transmission Lines

What is skin effect in transmission lines? A steady direct current flowing through the conductors is uniformly distributed over the whole cross-section of the conductor. However, an alternating current flowing through the conductor does not distribute uniformly, rather it tends to concentrate near the surface of the conductor as shown in the figure. This is …

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