Establish the PI model for a typical three-phase single circuit transmission line with one earth conductor, as shown in figure. The transmission line length is 65km and system frequency is 50Hz. The radius of the phase conductor is 2.5cm and the radius of earth conductor is 1.47cm.

(a) Impedance (calculate inductance)

(b) Calculate capacitance for admittance

(c) Sketch the PI model

Transcribed Image Text:

22.5 m 1. 2m 2m |A|A|A| Figure 4-Three-phase transmission line 22.5 m 1. 2m 2m |A|A|A| Figure 4-Three-phase transmission line

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