3 ms·
You can't have above-ground lines for such a high-power line.
by corentin 18y ago
You can't have above-ground lines for such a high-power line.
- timr 18y agoYou couldn't be less correct. 230KV is actually a low-voltage transmission line in the utility world. My father works for a regional utility in the northeast, and I know that their above-ground lines start at 350KV, and go as high as 750KV. Larger distribution networks may go higher. But hey...why believe me, when two seconds of Googling will provide the facts: http://en.wikipedia.org/wiki/Electric_power_transmission http://en.wikipedia.org/wiki/Electric_power_transmission "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."
- corentin 18y agoI'm talking about power and not about voltage; the diameter of a conductor is mostly defined according to the current (hence, power) it will carry through (we're talking about a 300 MW line, at peak time). You simply can't have conductors as large as trunks in the air.