Capacitance of System with Bundled Conductors

Capacitance of System with Bundled Conductors

 The Fig.1.31.2 shows the arrangement if the conductors are bundled one.

The conductors of any one bundle are in parallel and charge per bundle is assumed to divide equally between the conductors of bundle.

If the charge on phase a is qa then charge on each of the conductors a and a' will be qa/2. Same is the case with remaining two phases.

This equation is similar to the expression we have written for 3 phase line with unsymmetrical spacing. Combining the terms we get

Example 1.31.1 Determine the capacitance and charging current per unit length of the line when the arrangement of the conductor is shown in Fig. 1.32.2. The line is completely transposed and diameter is 15 mm and operating voltage is 220 kV.

AU : AU : Dec.-14, Marks 8

Solution :

Review Question

1. Explain the capacitance of a bandied conductor.