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200 kV power transmission line

Belongs to:
Overhead power transmission line
Description:

200 kV overhead cables belong to the extremely high voltage level and are primarily used in Asia, e.g. China, and Scandinavia, e.g. Sweden. 200 kV transmission lines are operated with three-phase alternating current.

Frequency ranges:
  • 50–60 Hz
Type of field:
electric and magnetic

Measurements (acc. to literature)

200 kV
Measurand Value Feature Remarks
electric field strength 4 kV/m (maximum, measured) China at a distance between 2 - 2.3 m from the high voltage power lines [1]
magnetic flux density 0.1 µT (mean, measured) Sweden at a distance of 75 - 99 m to the dwellings and a height of 75 cm; number of measuring sights: 8 [2]
magnetic flux density 0.11 µT (mean, measured) Sweden at a distance of 100 - 150 m to the dwellings and a height of 75 cm; numer of measuring sights: 9 [2]
magnetic flux density 0.15 µT (mean, measured) Sweden at a distance of 50 - 74 m to the dwelling of the lines; number of measuring sights: 13 [2]
magnetic flux density 0.33 µT (mean, measured) Sweden at a distance of 25 - 49 m to the dwelling and a height of 75 cm; number of measuring sights: 8 [2]
magnetic flux density 0.53 µT (mean, measured) Sweden at a distance of 0 - 24 m to the dwelling and a height of 75 cm; number of measuring sights: 7 [2]
magnetic flux density 9–10 µT (maximum, measured) China at a distance between 2 - 2.3 m from the high voltage power transmission lines [1]

References

  1. Xiao-Feng P et al. (2005): The influence of electromagnetic field irradiated by high-voltage transmission lines on properties of cells.
  2. Tomenius L (1986): 50-Hz electromagnetic environment and the incidence of childhood tumors in Stockholm County.