I have a problem where I need to calculate the induced voltage of a pipeline running parallel

[bulosard]

Hi all,

I have a problem where I need to calculate the induced voltage of a pipeline running parallel with a 33kV 600A unshielded transmission line (500kcmil) and the pipe is approx. 28m from the line. I have read many articles about the effects of induced voltage on pipeline but have yet to find any articles calculating the actual induced voltage. Any suggestions? Thanks..

 

[Skogsgurra]

Is it a 33 kV cable? If it is, I don't think there will be any problems in the pipeline. At least not from induced voltage.

If it is an overhead transmission line (three separate wires) then there may be a certain voltage induced. Especially in fault conditions (high fault current) and especially if the fault is between the extreme phases. I think that the conductors are transposed in your 33 kV line. If so, the induced voltage should, again, be of no concern.

How long is the pipeline/transmission lines running close to each other?

Gunnar Englund

http://www.gke.org

--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.

 

[MKFPE]

Gunner is right on all counts, the electric field shouldn't be much of an issue considering the voltage and distance.

Magnetic induction becomes an issue if the parallel section is of considerable length and the conductors are close and the currents are high. There are no precise definitions of "considerable length", "close", or "high".

All of this is kind of relative.

Check out EPRI's website

http://www.epri.com

.

In the search box put terms like "transmission line pipeline".

You will end up with a lot of reading material on induction problems.

EPRI has put a lot of their older research reports on-line with free access.

It is a great resource.

Also, check out:

http://www.openelectrical.org/wiki/index.php?title=Low_Frequency_Induction_Calculation

Regards,

 

[7anoter4]

I agree with Gunnar,of course.
See also:

http://ie.utcluj.ro/files/acta/2009/Number4/Paper11_Purcar.pdf

 

[PersonalProfile]

This may be of interest:

https://infostore.saiglobal.com/store/Details.aspx?ProductID=1516138

Regards,
Lyle