Abstract
This paper presents some aspects which •·e have
taken into consideration regarding electrostatic
induction of ~he first 500 kv transmission lines
in China. The general variation of the electric
field under transmission lines and in substations
is analysed. The influence of various factors on
the electric field was calculated and discussed.
In order to limit the field strength near ground
surface to 9 kv/m or less, the conductor height
has been increased appropriately. Finally, calculations
were also made to reduce local field
strength by means of shielding.
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