Which of the following is NOT a disadvantage of EHV lines?
Over voltage
problem due to switching surge.
Generation
and distribution of power is in AC only.
Corona
problems increase in the voltage gradient.
Insulation
coordination based upon switching impulse level.
Generation
and distribution of power is in AC only.
Generation
and distribution of power is an AC only in NOT a disadvantage of EHV lines.
Advantage of
EHV line :
(i) Reduces
the current Rating of transmission line.
(ii) Reduces
the cross sectional area of conductor i.e. weight of conductor for given length
of transmission line.
(iii) Reduces
the capital cost investment of conductor.
(iv) Reduces
the transmission line losses.
(v) Transmission
line efficiency increases due to the decreases of the losses.
Hence, the correct
option is (B).
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