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When the distance between two conductors is more than that of the diameter and the potential difference is increased beyond the certain limit in such a way so that a glow ( seems like violet and shine ) is produced around the conductor and also noise is produced. This kind of effect called the Corona Effect in power systems.
As the potential difference is increased, Corona Effect is also increased, and due to Corona Effect, Power loss in power system and disturbance in the nearer communication line is also increased.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoCorona is a result of the ionization of a fluid around a conductor; when referring to electrical power lines, this is the ionization of the air around the conductor. At very high voltages (200kV and greater), this can become very significant, and can cause the deteriation of the conductor, or any conducting surface near the conductor, so special care is taken to mitigate it (such as using corona rings and bundled conductors). The ionization is a result of the buildup of electrons. Corona rings and bundled conductors provide a larger surface area for the electrons to "sit on".
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Why there is no corona in DC transmission?
Bcoz, corona effect is only possible in high voltage AC supply due to the frequency. That is, the frequency and the HT voltage causes the arc b/w 2 conductors.so , here the air is act as the arc transmitting medium.we called it as Corona. It is highly impossible in DC bcoz of no frequency.
What are the evidences of a corona discharge?
When Corona Discharge occurs it forms ozone and nitrogen oxides. These combined with moisture to prduce nitric acid, which is destructive to most dielectrics and certain metallic compositions, resulting in corrosion. In addition, the high energy in some discharges results in mechanical, electrical, and thermal damage. SC
Effects of connecting poor contact in electrical circuits?
An effect of connecting a poor contact in an electrical circuit could be intermittent current flow.
Explain the term corona in transmission line.?
At very high voltages, corona becomes an issue, such as in high power transmission. In effect, if there are any "sharp points", square corners, etc., electrons will tend to build up and this build up begins to damage the structure. this is why in very high voltage subs, you will see rings used instead of bolts or hooks (easiest to see at the top of poles).
What can be produced by electrical current in a simple circuit?
There are three effects produced by an electric current:heating effectmagnetic effectchemical effect
What is a corona effect?
http://en.wikipedia.org/wiki/Corona_discharge
Why more humming noise in HT electric line?
corona effect
Will oil effect an electrical connector?
no oil dos not effect an electrical connector
What is the definition of a corona discharge?
A corona discharge is the ionization of the surrounding atmosphere after an electrical discharge. This can usually be seen as a glowing of a different color near high voltage conductor points.
What is corona effect in?
Corona is a result of the ionization of a fluid around a conductor; when referring to electrical power lines, this is the ionization of the air around the conductor. At very high voltages (200kV and greater), this can become very significant, and can cause the deteriation of the conductor, or any conducting surface near the conductor, so special care is taken to mitigate it (such as using corona rings and bundled conductors). The ionization is a result of the buildup of electrons. Corona rings and bundled conductors provide a larger surface area for the electrons to "sit on".
What are the advantages of corona loss?
-it prevents conductor from electrical surges -it increases virtual diameter hence conductor can carry more current -corona discharge is used in photo copier and laser printers
What are the Advantages of Corona in transmission lines?
Due to corona effect virtually conductor size is increase and therefor resistance in transmission line is decreases.so I2R losses will decreases...
What is corona power loss in transmission line hvdc?
A: Transmission lines while there is ceramic insulators providing separation to the phases will have a corona if the insulators are dirty providing small current leakage ionizing the air around it therefore corona effect.
What is the minimum voltage required to avoid corona effect?
In air at sea level, 327 V peak.
What part of the sun is seen during a solar eclipse?
The corona.
What are the three factors that effect the electrical parameters of a op-amp?
Supply voltage , temperature , frequency are factors that effect the electrical parameters of opamp
corona?
corona test
