Transposition of transmission line
Transposition of transmission line
(OP)
Does any expert remember how to prove transposition of three equal length transmission line can minimise the mutual inductance and capacitance?
Thank you!!
Thank you!!






RE: Transposition of transmission line
Kindly forward if any answers come to you on archunihar@rediffmail.com
Best Regards,
Nihar
RE: Transposition of transmission line
Regards,
RE: Transposition of transmission line
http://www.ipst.org/TechPapers/2001/IPST01Paper107.pdf
http://www.selinc.com/techpprs/6090.pdf
http://eent1.tamu.edu/elen459/documents/Transmission_Line_Parameter_Calculation.pdf
etc. for more info
RE: Transposition of transmission line
Sorry i don't know of any formula for this problem,but I do have a method that we have used quite successefully in our plant.
These are mostly long runs of 25KV or 5Kv trailing cables that power our major equipment.Due to the fluctuating loads, Voltages were being induced into the Trailing cable ground Monitoring circuits ,causing control relays to drop out and trip main switchouses.
In the long cable runs we have Junction Boxes and this allows us to "transpose" the phase cables at each JBox.
We identify the JBoxes cable entry and exits with "LINE" and "LOAD" signs and follow a transposition pattern as follows:(Eg On the line side,left to right RED/BLACK/BLUE or A/B/C, on the load side BLACK/BLUE/RED or B/C/A.
We follow the same pattern for every other JBOx.
If you have to change the rotation,it would have to be done at the main Switch house.
I don't know if it applies to your system,it does work well for us.
GusD