what is electrical Corona effect
Answer (1)
21st Feb, 2020
Corona discharge also known as corona effect is an electrical discharge caused by the ionization of a fluid such as air surrounding a conductor that is electrically charged. It will occur in high voltage systems unless sufficient care is taken to limit the strength of the surrounding electric field.
It can also produce a violet glow, production of ozone gas around the conductor, radio interference, and electrical power loss.
The corona event occurs naturally due to the fact that air is not a perfect insulator , containing many free electrons and ions under normal conditions.
Two factors are important for corona discharge to occur:
- Alternating electrical potential difference must be supplied across the line.
- The spacing of the conductors must be large enough compared to the line diameter.
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