Loop inductance on DC Overhead line system

[rail1996]

Does anyone know how to calculate the loop inductances of some DC overhead line railway system. i.e +ve supplied by overhead wires and -ve return via the rails.

 

[jghrist]

Why do you need inductance for dc lines? This would only be relevant for transient studies.

 

[RAMConsult]

Try googling on "dc traction system calculations", you should get about 6,770 hits, the answer to your question is in there somewhere.

 

[rail1996]

Jghrist - Yes, I wish to calculate the asymmetrical fault level for OHL-rails faults and the loop inductance is required.

RAMConsult - Thank you for your suggestion. I've serached through this but with on luck.

 

[jbartos]

Suggestion: Reference:
L.J. Giacoletto, Electronics Designers' Handbook," 2nd Edition, McGraw-Hill Book Co., 1977,
page 3-44 Table 3.8 Magnetic Field and Self-inductance for simple configurations
e.g.
Ring
Rectangle with circular cross-section
Calculate:
1. Mutual inductance by the Biot-Savart (Ampere) equation
2. If two conductors are in the same plane, the Neumann Equation may be applied
3. For Self inductances: Reference:
Frederick W. Grover "Inductance Calculations" D. Van Nostrand Company, Inc., Princeton, NJ, 1946
Reprinted by Dover Publications, Inc., New York, 1962