Advantages:
- With increase in the transmission voltage size of the conductors is reduced (Cross section of the conductors reduce as current required to carry reduces).
- As the reduction in current carrying requirement losses reduces results in better efficiency
- Due to low current voltage drop will be less so voltage regulation improves
Limitations:
- With the increase in the voltage of transmission, the insulation required between the conductors and the earthed tower increases. This increase the cost of line support
- With increase in the voltage of transmission, more clearance is required between conductors and ground. Hence higher towers are required.
- With increase in the voltage transmission, more distance is required between the conductors. Therefore cross arms should be long
28 comments:
Power is transmitted at higher voltage to reduce power losses during transmission. Power transmitted is the product of voltage and current. So when same amount of power is transmitted at higher voltages, current in the conductors is lower.
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Voltage increases, current decreases...can anyone relate it with the ohm's law...V=RI...Seems to be a bit confusing
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great blog, thanks for sharing, came to know about quiet a few things all about high voltage throughelectrical cable
What are the advantages of high
transmission
voltage
In ohm's law, power is variable, not constant. But here, power is constant. P=VI
If power becomes constant in ohm's law, then Resistance will become variable and hence it is related.
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