OVERHEAD TRANSMISSION LINE IMPEDANCE 2

[art7]

How would one compute the Zero Sequence Impedance of
an overhead three phase power line with and without
an overhead static wire.

 

[alehman]

It depends entirely on the geometry of the line and transposition of phases. Suggest consulting a good book on power transmission line theory.

See

http://www.ee.sc.edu/classes/Fall03... line zero sequence impedance calculation.pdf

http://www.ee.sc.edu/classes/Fall03/elct551/zero-seq Z calc.pdf

http://www.selinc.com/techpprs/6066.pdf

Also see these previous related threads.
thread238-49033
thread238-56254
thread238-54661

 

[davidbeach]

See Chapters 11 through 13 of J. Lewis Blackburn Symmetrical Components for Power System Engineering or Chapter 3 of the Electrical Transmission and Distribution Reference Book. Many other references. The answer is much too involved to be adequately developed in this type of forum.