CORONA EFFECT IN TRANSMISSION LINE

What is Corona Discharge And it's effect on Transmission Lines:

What is Corona Discharge and it's effect on Transmission Lines.

This phenomenon occurs when the electrostatic field across the transmission line conductors
produces the condition of potential gradient.

In transmission lines, conductors are surrounded by the air. Air acts as a dielectric medium.ir

Advantages & Disadvantages of Corona Effect:

Advantages:

Due to corona across the conductor, the sheath of air surrounding the conductor becomes conductive which rises the conductor diameter
virtually.

Disadvantages:

A non-sinusoidal voltage drop occurs in the transmission line due to non-sinusoidal corona current, which causes interference with
neighboring communication circuits.

Factors Affecting Corona Discharge:

The phenomenon of electric discharge associated with energized electrical devices, including transmission lines results in a power loss. The following factors can change the magnitude of the Corona Effect:

Supply Voltage: As the electrical corona discharge mainly depends upon the electric field intensity produced by the applied system
voltage.

Air Density Factor: Air density factor also determines the corona loss in transmission lines. The corona loss in inversely proportional to air density factor.

Learn more about Corona Effect at www.allumiax.com

1. CORONA EFFECT IN
TRANSMISSION
LINES
CAUSES, DISADVANTAGE AND TECHNIQUES TO REDUCE IT

2. What is Corona Discharge And it's effect
on Transmission Lines
Advantages & Disadvantages of Corona
Effect
Factors Affecting Corona Discharge
How Corona Effect is Reduced
Important Parameters in Corona Analysis
1.
2.
3.
4.
5.
Content
Topics to Discuss

3. What is Corona
Discharge And
it's effect on
Transmission
Lines
The ionization of air surrounding the high voltage
transmission lines causing the conductors to
glow, producing a hissing noise, is called Corona
Discharge or Corona Effect.
This phenomenon occurs when the electrostatic
field across the transmission line conductors
produces the condition of potential gradient.
In transmission lines, conductors are surrounded
by the air. Air acts as a dielectric medium.ir

4. Advantages &
Disadvantages
of Corona Effect
Due to corona across the conductor, the sheath of
air surrounding the conductor becomes
conductive which rises the conductor diameter
virtually.
A non-sinusoidal voltage drop occurs in the
transmission line due to non-sinusoidal corona
current, which causes interference with
neighboring communication circuits.
Advantages:
Disadvantages:

5. Factors Affecting
Corona Discharge
Supply Voltage: As the electrical corona
discharge mainly depends upon the electric
field intensity produced by the applied system
voltage.
Air Density Factor: Air density factor also
determines the corona loss in transmission lines.
The corona loss in inversely proportional to air
density factor
The phenomenon of electric discharge associated
with energized electrical devices, including
transmission lines results in a power loss. The
following factors can change the magnitude of the
Corona Effect:

6. TO LEARN MORE
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WEBSITE.
https://bit.ly/corona-lines