why we step up voltage for reducing the loss, even if
voltage and current are proportional anr resistance remains
same
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Answer Posted / vishal kumar sharma.
In a Transmission line we used Step-up voltage for transmit
the power, there are so many reasons for use of high
voltage, some is as follow:-
1) The resistance loss is I*I*R. By the formula if current
is low them resistance loss will low and line efficiency
will increase.
2) For a low current value, we should use a conductor with a
low cross section area for same power, as such cost of the
conductor & weight of conductor will also reduce.
3) As the weight of conductor will reduce, the weight of
Tower structures for carrying the low weight conductor will
also reduce and the cost of tower / project will reduce. As
such the capital cost of line also reduce.
4) As the tower weight is reduce, the foundation volume for
tower is also reduce. As such the capital cost of line is
reduce.
On the consideration of the above losses and the reduction
of capital cost of project. We will use a high voltage
system to transmit the power.
Regards.
Vishal kr. Sharma.
(Simplex Infra. ltd.)
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