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Corona effect in transmission lines.| Explanation by Yuvi - Study Point

You all have heard about the Corona effect in transmission lines, now understand it in a simple way.

  • This effect is a phenomenon which is associated with all transmission lines. At certain conditions, the electric field closer or near the energized conductors or components produces a tiny electric discharge or we can say corona which causes the surrounding air to ionize.
  • And due to this ionization of surrounding air molecules of conductors, a luminous glow with hissing noise is produced which is known as Corona effect.

  • Between the transmission lines, air act as a dielectric medium or we can say that air act as an insulator between current-carrying conductors.
  • Between the conductors, voltage induces and if this voltage is of alternating nature then charging current will flow between the conductors.
  • And the voltage of this transmission line and electric field intensity increases because of this charging conductor.

  • There is a predetermined value of the electric field intensity that if the electric field intensity is less than 30 kV then the induced current between the conductors is neglected.
  • But if the value of electric field intensity is beyond 30 kV then the air between the conductors starts conducting as they get charged.
  • And the sparking occurs until the complete breakdown of the conductor's insulation properties takes place.  



                                          
 https://youtu.be/ImGUwRthaIo

{ In this lecture video, I have given an explanation about the Corona effect in transmission lines, formation of the corona,
factors affecting the corona effect, how to minimize the corona effect in transmission lines, Disadvantages. }


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