The following parameters are based on a preliminary line design: (mathrm{V}_{mathrm{S}}=) 1.0 per unit, (mathrm{V}_{mathrm{R}}=0.9) per unit,

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The following parameters are based on a preliminary line design: \(\mathrm{V}_{\mathrm{S}}=\) 1.0 per unit, \(\mathrm{V}_{\mathrm{R}}=0.9\) per unit, \(\lambda=5000 \mathrm{~km}, \mathrm{Z}_{\mathrm{c}}=320 \Omega, \delta=36.8^{\circ}\).

A three-phase power of \(700 \mathrm{MW}\) is to be transmitted to a substation located \(315 \mathrm{~km}\) from the source of power.

(a) Determine a nominal voltage level for the three-phase transmission line, based on the practical lineloadability equation.

(b) For the voltage level obtained in part (a), determine the theoretical maximum power that can be transferred by the line.

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Power System Analysis And Design

ISBN: 9781305632134

6th Edition

Authors: J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

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