A corona discharge is an electrical discharge caused by the ionization of a fluid such as air surrounding a conductor carrying a high voltage. It represents a local region where the air (or other fluid) has undergone electrical breakdown and become conductive, allowing charge to continuously leak off the conductor into the air.

A corona discharge is an electrical discharge brought on by the ionization of a fluid surrounding a conductor that is electrically charged. From: Applied Energy, 2016

The purpose of the corona ring is to distribute the electric field gradient and lower its maximum values below the corona threshold, preventing corona discharge. Corona rings are used on very high voltage power transmission insulators and switchgear, and on scientific research apparatus

Dec 4, 2018 · In physics, the glow and audible event occurring when an insulator is exposed to excessive voltages is called a corona. It may also be known in the electric industry as “corona discharge,” “plume discharge,” “brush discharge” or “glow discharge.”

Results from this study show that corona discharge is taking place and it has been verified visually and by measurements of voltage and current and ions emanating into the ambient air from the test section have been detected.

Applying high-voltage to the electrodes produces a corona discharge on the needle tips. When a corona discharge occurs and the air surrounding the electrode needles is broken down, ions are produced. Using these ions, reverse-polarity static electricity is neutralized, and …

The appearance of corona discharges is explained by physical mechanisms of electron creation in the region of intense electric field where ionization occurs. The creation mechanism of electrons depends on the polarity of the corona electrode.

corona discharge is, by definition, a gas discharge where the geometry confines the gas ionizing processes to high-field ionization region(s) around the active electrode(s). The corona geometry

discharge of electrical energy called a corona discharge, or corona. Several factors (e.g., conductor voltage, shape, and diameter, and surface irregularities such as scratches, nicks, dust, or water drops) can affect a conductor’s electrical-surface gradient and its corona performance.

Using a digital single-lens reflex (DSLR) camera, corona discharge light patterns were captured from the corona initiation to the gap breakdown. The resultant corona light discharge patterns were compared according to electrode type, voltage type, and voltage level.