Why is electric power transmitted at very high voltages?

Question

Please don't make it too complex for me!

Thanks heaps,

Answer 1

dont no why but it is less likely to loss is it amps..... humm havnt taken elecrticity for 2 years now but i wont loss power as quickly

Answer 2

Due to the large amount of power involved, transmission normally takes place at high voltage (110 kV or above). Electricity is usually transmitted over long distance through overhead power transmission lines. Underground power transmission is used only in densely populated areas due to its high cost of installation and maintenance, and because the high reactive power produces large charging currents and difficulties in voltage management.

The ability to transmit larger amounts of electric power over longer distances increases with the transmission voltage. Historically, this relationship--in conjunction with its associated economies of scale--provided the basic impetus for the technological drive to utilize increasingly higher voltages for the transmission of electric power: from "high voltage" (HV) transmission at 100, 138, 161, and 230 kV to "extra-high voltage" (EHV) transmission at 345, 400, 500, and 765 kV. For the past several years, research has been under way--in this country and abroad--to bring about transmission of electric power at "ultra-high voltage" (UHV), i.e., voltage in the range of 1000 to 1600 kV. This paper reviews the present status of UHV transmission research and development and discusses current prospects for the introduction of UHV technology in the commercial transmission of electric power.

Answer 3

Because the voltage drop in every station needs additional voltage. Meaning some of the voltages are wasted when voltage is dropped to one station. La lang.

Answer 4

because of the power loss in the cables its the only the current can travel large distances

Answer 5

The power lost in a transmission line is proportional to the resistance of the line and to the square of the current.  For the same transmitted power, the higher the voltage, the lower the current.