(a) A symmetrical positive sequence of three-phase load is receiving supply from a three- phase electrical power system. Assuming load is star configuration, detail properties of the entire system are shown below. Voltage Supply, VL = 450 V Frequency, Felec. = 50 Hz Resistance, R = 35Q per phase Inductance, L = 0.55H per phase (i) Calculate phase voltage, Vph and phase current, Iph of the system. (ii) Determine total real power (P), total reactive power (Q) and apparent power (S) absorbed by the load. (iii) Obtain power factor, p.f. and propose one (1) practical method to improve poor power factor. rate Windows

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
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.16P: A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and...
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Q3 (a) A symmetrical positive sequence of three-phase load is receiving supply from a three-
phase electrical power system. Assuming load is star configuration, detail properties of the
entire system are shown below.
Voltage Supply, VL = 450 V
Frequency, Felec. = 50 Hz
Resistance, R = 352 per phase
Inductance, L = 0.55H per phase
(i)
Calculate phase voltage, Vph and phase current, Iph of the system.
(ii)
Determine total real power (P), total reactive power (Q) and apparent power (S)
absorbed by the load.
(iii) Obtain power factor, p.f. and propose one (1) practical method to improve poor
power factor.
Activate Windows
Transcribed Image Text:Q3 (a) A symmetrical positive sequence of three-phase load is receiving supply from a three- phase electrical power system. Assuming load is star configuration, detail properties of the entire system are shown below. Voltage Supply, VL = 450 V Frequency, Felec. = 50 Hz Resistance, R = 352 per phase Inductance, L = 0.55H per phase (i) Calculate phase voltage, Vph and phase current, Iph of the system. (ii) Determine total real power (P), total reactive power (Q) and apparent power (S) absorbed by the load. (iii) Obtain power factor, p.f. and propose one (1) practical method to improve poor power factor. Activate Windows
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