What is Corona Discharge?

What is Corona Discharge?

Corona Discharge Definition

Corona discharge is defined as an electrical phenomenon where a high-voltage conductor ionizes the surrounding air, visible as a violet glow and audible as a hissing sound.

Critical Disruptive Voltage

The voltage at which air around a conductor breaks down and becomes ionized, initiating the corona effect, is typically around 30 kV.

Major Influences

Factors like atmospheric conditions, conductor condition, and spacing between conductors significantly impact the occurrence and intensity of the corona effect.

Reduction Strategies

• Increasing the conductor size

• Increasing the distance between conductors

• Using bundled conductors

• Using corona rings

Corona Effect on Energy Loss

The corona effect leads to power losses manifested as light, heat, sound, and ozone production, impacting the efficiency of high-voltage power systems.