At 10:17 PM 8/15/2006, Michael Tope wrote:
>----- Original Message ----- From: "Jim Lux" <jimlux@earthlink.net>
>
>>> They have experimented with lines up to 1 million volts in the U.S. and
>>>we do have some lines running DC now in the states.
>>
>>The Pacific Intertie includes is a +/- 400 kV DC link that has been in
>>operation since the 1960s
>>http://www.abb.com/cawp/gad02181/c3e8e6cc588aa8c3c1256d8800402284.aspx
>>This link (now running at +/- 500kV, since 1982) terminates at the Sylmar
>>converter substation just north of Los Angeles and carries arount 3 GW.
>
>I seem to recall someone telling me that the Sylmar link was capable of
>single-ended
>operation against a ground return?
Yes.. actually a sea return. There's a bunch of "ground electrodes" in the
ocean, at least at the southern end. A 48 km transmission line connects
them. One of those links describes it.
>Mike W4EF.............................
>
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