Chapman Problem 3-4. A single-phase power system is shown in the figure below. The power source feeds a 100-kVA, 14/2.4-kV transformer through a feeder impedance of 38.2 + j140 N. The transformer's equivalent series impedance referred to its low-voltage is 0.12 + j0.5 N. The load on the transformer is 90 kW at 0.85 PF lagging and 2300V. а. What is the voltage at the power source of the system? b. What is the voltage regulation of the transformer? How efficient is the overall power system? С.

Chapman Problem 3-4. A single-phase power system is shown in the figure below. The power source feeds a 100-kVA, 14/2.4-kV transformer through a feeder impedance of 38.2 + j140 N. The transformer's equivalent series impedance referred to its low-voltage is 0.12 + j0.5 N. The load on the transformer is 90 kW at 0.85 PF lagging and 2300V. а. What is the voltage at the power source of the system? b. What is the voltage regulation of the transformer? How efficient is the overall power system? С.

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.11MCQ: For a short-circuit test on a 2-winding transformer, with one winding shorted, can you apply the...

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Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

Chapman Problem 3-4. A single-phase power system is shown in the figure below. The power source
feeds a 100-kVA, 14/2.4-kV transformer through a feeder impedance of 38.2 + j140 N. The
transformer's equivalent series impedance referred to its low-voltage is 0.12 + j0.5 N. The load on the
transformer is 90 kW at 0.85 PF lagging and 2300V.
а.
What is the voltage at the power source of the system?
b. What is the voltage regulation of the transformer?
How efficient is the overall power system?
С.

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