A balanced three-phase distribution line has an impedance of (1 +j8)ohm/phase .This line is used to supply three balanced three-phase loads that are connected in parallel. The three loads are: Load I: S1/phase = 40kVA at a power factor of 0.96 leading. Load 2: S2/phase = 60 kVA at a power factor of 0.8 lagging. Load 3: P3/phase= 33.6 kW and Q3/phase = 5.2 kVAR. The magnitude of the phase-to-neutral voltage at the terminals of the loads is 2400 V (rms)and is considered as phase reference. a) Find the total complex apparent power per phase STotal/phase b)Draw the single phase equivalent circuit. c)What is the magnitude of the phase-to-neutral voltage at the sending end of the line?

A balanced three-phase distribution line has an impedance of (1 +j8)ohm/phase .This line is used to supply three balanced three-phase loads that are connected in parallel. The three loads are: Load I: S1/phase = 40kVA at a power factor of 0.96 leading. Load 2: S2/phase = 60 kVA at a power factor of 0.8 lagging. Load 3: P3/phase= 33.6 kW and Q3/phase = 5.2 kVAR. The magnitude of the phase-to-neutral voltage at the terminals of the loads is 2400 V (rms)and is considered as phase reference. a) Find the total complex apparent power per phase STotal/phase b)Draw the single phase equivalent circuit. c)What is the magnitude of the phase-to-neutral voltage at the sending end of the line?

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 2.51P: A three-phase line with an impedance of (0.2+j1.0)/ phase feeds three balanced three-phase loads...

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