QUESTION ONE (a) A 3-phase line having an impedance of (5 + j20) ohm per phase delivers a load of 30 MWat a p.f., of 0.8 lag and voltage 33 kV. Determine the capacity of the phase modifierrequired to be installed at the receiving end if the voltage at the sending end is to bemaintained at 33 kV.(b) Determine the tap ratio in problem (a) if the receiving end voltage is to be maintained at0.92 p.u. of the sending end voltage. The line is fed through a 33/220 kV transformer.Assume ???? = 1. QUESTION ONE(a) A 3-phase line having an impedance of (5 + j20) ohm per phase delivers a load of 30 MWat a p.f., of 0.8 lag and voltage 33 kV. Determine the capacity of the phase modifierrequired to be installed at the receiving end if the voltage at the sending end is to bemaintained at 33 kV.(b) Determine the tap ratio in problem (a) if the receiving end voltage is to be maintained at0.92 p.u. of the sending end voltage. The line is fed through a 33/220 kV transformer.Assume tęt₁ = 1.

Phase Modifier-:This device, sometimes referred to as the synchronous condenser, is used to retain…

QUESTION ONE (a) A 3-phase line having an impedance of (5 + j20) ohm per phase delivers a load of 30 MW at a p.f., of 0.8 lag and voltage 33 kV. Determine the capacity of the phase modifier required to be installed at the receiving end if the voltage at the sending end is to be maintained at 33 kV. (b) Determine the tap ratio in problem (a) if the receiving end voltage is to be maintained at 0.92 p.u. of the sending end voltage. The line is fed through a 33/220 kV transformer. Assume tstr = 1.

QUESTION ONE (a) A 3-phase line having an impedance of (5 + j20) ohm per phase delivers a load of 30 MW at a p.f., of 0.8 lag and voltage 33 kV. Determine the capacity of the phase modifier required to be installed at the receiving end if the voltage at the sending end is to be maintained at 33 kV. (b) Determine the tap ratio in problem (a) if the receiving end voltage is to be maintained at 0.92 p.u. of the sending end voltage. The line is fed through a 33/220 kV transformer. Assume tstr = 1.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

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

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

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.10MCQ: Transmission line conductance is usually neglected in power system studies. True False

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