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View Diary: The simple innovation that could make wind power a big player (230 comments)

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  •  My physics friend is skeptical (0+ / 0-)

    He has a book on global warming but is skeptical of this claim. Here is what he wrote to me about this diary.

    About 7% of the electrical power that goes into the lines is currently (pun?) lost along the way (nationally). Part of this is radiated energy (the wires act as antennas since the voltage is AC), part is heating effects (electricity is turned to heat and the wires get hot). I don't think much of the 7% loss is voltage loss due to poor insulation (I could be wrong, but not my understanding of how electrical systems lose energy). Boosting the transmission voltage does drop the current which reduces heating and radiation effects. But I never heard that insulation was the problem for boosting the voltage. I'd have to see the calculation but a factor of 6 seems large.
    Not sure what I should believe.

    I don't know what consciousness is or how it works, but I like it.

    by SocioSam on Tue Jan 22, 2013 at 02:04:14 PM PST

    •  Please help me understand something. You say (0+ / 0-)

      the following:

      That means the insulator has to be long, to keep it away from the cross-arm. But that long insulator then could sway in the wind toward the pylon, which might also cause a short. All of which means that there's a limit to how much voltage the line can carry, based on the minimum distance the line could get to the pylon or the cross-arm.
      What is the relation between the voltage of the line and the minimum distance to the pylon or cross-arm? I have some understanding of power electronics, but I don't know this type of detail. So, for people without all the technical background, please give a short explanation.

      Are you just saying that it's too risky to put higher voltage lines on long connectors that sway with the wind and that with insulated crossbeams, they know there is less risk to putting these high voltage lines closer to the cross-arm? Or, are you saying there is a specific formula for how close or far away you must put the line based on its voltage?

      Just doing my part to piss off right wing nuts, one smart ass comment at a time.

      by tekno2600 on Tue Jan 22, 2013 at 02:24:50 PM PST

      [ Parent ]

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