Line conductance

A high-voltage power line with corona discharge effects, showcasing electrical phenomena in a dramatic night setting, complete with streaks of light and a dark starry sky.

Understanding Line Conductance and Corona Effects

Test your knowledge on line conductance and the effects of corona in electrical transmission systems. This quiz delves into critical concepts such as dielectric strength, Peek's formula, and the impact of environmental factors on corona losses.

Challenge yourself with questions on:

  • Dielectric strength principles
  • Effects of bundle conductor arrangements
  • Characteristics of corona discharge
  • Power loss calculations
12 Questions3 MinutesCreated by ElectrifyingWire42
Dielectric strength is around 30 kV/cm peak
True
False
According to Peek’s formula, power losses due to corona depends by the network frequency
True
False
Under abnormal weather conditions, corona losses decrease
True
False
Peterson’s formula can replace Peek’s formula when the corona losses increase
True
False
Bundle arrangements provide benefit against corona effect
True
False
Corona effect can give some advantages in case of transient events
True
False
The corona loss is observed to be a function of frequency. Losses, therefore, increase with increased frequency. Since there is no frequency in DC transmission, corona loss is less compared to AC one.
True
False
The lower the pressure and the higher the temperature the higher the corona losses
True
False
The effect of corona can be reduced by either increasing the size of the conductor or the space between them. Therefore, whatever increases the radius of the conductor, decreases the corona losses
True
False
For ball-and-socket insulator, the power loss at 10kV is about 10kW
True
False
Critical Disruptive Voltage is the minimum voltage at which ionization takes place
True
False
Line conductance is associated to the reactive power produced by an electric line
True
False
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