Use of Bundled Conductors in Transmission Line:

A Bundled Conductors in Transmission Line is shown in Fig. 3.13. The conductors of any one bundle are in parallel, and it is assumed that the charge per bundle divides equally among the conductors of the bundle as D12 ≫ d. Also     D12 – d ≈ D12 + d ≈ D12 for the same reason.

Use of Bundled Conductors in Transmission Line

The results obtained with these assumptions are fairly accurate for usual spacings. Thus if the charge on phase a is qa, the conductors a and a’ have a charge of qa/2 each; similarly the charge is equally divided for phases b and c.

Now, writing an equation for the voltage from conductor a to conductor b, we get

Use of Bundled Conductors in Transmission Line

or

Use of Bundled Conductors in Transmission Line

Considering the line to be transposed and proceeding in the usual manner, the final result will be

Use of Bundled Conductors in Transmission Line

It is obvious from Eq. (2.42) that the method of modified GMD is equally valid in this case.

Related posts:

  1. Bundled Conductors in EHV Transmission Lines
  2. Flux Linkage of n Parallel Conductors Carrying Current
  3. Line to Line Fault
  4. Transistor Load Line Analysis (DC and AC Load Line and Q Point)
  5. Definition of Inductance of Transmission Line
  6. Introduction to Power Transmission Line
  7. Equivalent Circuit of Short Transmission Line and Phasor Diagram
  8. Voltage Regulation of Transmission Line
  9. Medium Transmission Line
  10. Long Transmission Line
  11. Voltage Profile of Transmission Line
  12. Zero Sequence Impedance of Transmission Line
  13. Constants of a Transmission Line
  14. Performance of Single Phase Short Transmission Line Voltage
  15. Performance of Three Phase Short Transmission Line
  16. Medium Transmission Line Voltage
  17. Long Transmission Line Voltage
  18. Switching Surges in Transmission Line
  19. Transmission Line Overvoltage Protection
  20. Stripline and Microstrip Transmission Line