Problems Caused By Corona Discharges
Coronas can generate audible and radio-frequency noise, particularly near electric power transmission lines. They also represent a power loss, and their action on atmospheric particulates, along with associated ozone and NOx production, can also be disadvantageous to human health where power lines run through built-up areas. Therefore, power transmission equipment is designed to minimise the formation of corona discharge.
Corona discharge is generally undesirable in:
- Electric power transmission, where it causes:
- Power loss
- Audible noise
- Electromagnetic interference
- Purple glow
- Ozone production
- Insulation damage
- Electrical components such as transformers, capacitors, electric motors and generators. Corona progressively damages the insulation inside these devices, leading to premature equipment failure. One form of attack is ozone cracking of elastomer items like O-rings.
- Situations where high voltages are in use, but ozone production is to be minimised
- Static electricity discharge
Coronas can be suppressed by corona rings, toroidal devices that serve to spread the electric field over larger area and decrease the field gradient below the corona threshold.
Read more about this topic: Corona Discharge
Famous quotes containing the words problems caused, problems and/or caused:
“There is an enormous chasm between the relatively rich and powerful people who make decisions in government, business, and finance and our poorer neighbors who must depend on these decisions to alleviate the problems caused by their lack of power and influence.”
—Jimmy Carter (James Earl Carter, Jr.)
“The Settlement ... is an experimental effort to aid in the solution of the social and industrial problems which are engendered by the modern conditions of life in a great city. It insists that these problems are not confined to any one portion of the city. It is an attempt to relieve, at the same time, the overaccumulation at one end of society and the destitution at the other ...”
—Jane Addams (1860–1935)
“... dealing with being a lesbian—and part of that is by being politically activist—has caused me to have a less carefree adolescence. But I don’t think that’s a bad thing. It has its rewards.”
—Karina Luboff (b. 1974)