A balanced three-phase load is connected to a (4.16-mathrm{kV}), three-phase, fourwire, grounded-wye dedicated distribution feeder. The load

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A balanced three-phase load is connected to a \(4.16-\mathrm{kV}\), three-phase, fourwire, grounded-wye dedicated distribution feeder. The load can be modeled by an impedance of \(\mathrm{Z}_{\mathrm{L}}=(4.7+j 9) \Omega /\) phase, wye-connected. The impedance of the phase conductors is \((0.3+j 1) \Omega\). Determine the following by using the phase \(A\) to neutral voltage as a reference and assume positive phase sequence:

(a) Line currents for phases A, B, and C.

(b) Line-to-neutral voltages for all three phases at the load.

(c) Apparent, active, and reactive power dissipated per phase, and for all three phases in the load.

(d) Active power losses per phase and for all three phases in the phase conductors.

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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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