A balanced Δ connected load with impedance 63 + j216 Ω/Ø 50∠0 ° Ω/Ø It is connected in parallel to a balanced Y-connected load with impedance. Parallel loads have an impedance of 1 + j3 Ω/Ø fed from one line. Y the magnitude of the connected load from line to neutral is 750 V a) Calculate the magnitude of the current in the line feeding the loads? b) Calculate the magnitude of the phase voltage at the sending end of the line?

A balanced Δ connected load with impedance 63 + j216 Ω/Ø 50∠0 ° Ω/Ø It is connected in parallel to a balanced Y-connected load with impedance. Parallel loads have an impedance of 1 + j3 Ω/Ø fed from one line. Y the magnitude of the connected load from line to neutral is 750 V a) Calculate the magnitude of the current in the line feeding the loads? b) Calculate the magnitude of the phase 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...

See similar textbooks

Similar questions

In the power system the magnitude of the sending end and receiving end voltages are kept at 1pu. The loads are S1 = (6 + j12) pu and S2 = (14 + j7)pu. The line impedance is j0.04pu. The power fed to the busbars are (10 + j17) and (10 + j2). Use the given information to calculate the following: i) the load angle for the sending end voltage ii) the receiving end reactive power iii) the sending end reactive power iv) total reactive power in the line
5. The figure below shows two star connected loads with three phase power. The voltage source is 120Z0°. The loads are Z₁ = 10 + j4 № and Z₂ = 2 +j3 №. The cables are negligible. Calculate: a) the line and phase current. b) the real power from the source. c) the reactive power of the circuit. Is V N Z₁ Z₁ Z₁ Z₂ Z₂ N N Z₂
1. A balanced three-phase Y-source with Vph "E" V rms drives a Y-connected three-phase load with phase impedance ZA = " F" Q, ZB = "G" N, and Zc= "H" N. Calculate the line currents and total complex power delivered to the load. Assume that the neutrals are connected. E=230 F= 90 G= 9+j5 H= j90
The following three-phase loads are connected to a short transmission line with impedance per wire of 4 + j7 ohms: Load 1: Resistive load drawing 80 A, Load 2: Capacitor drawing 60 A, Load 3: Inductive load drawing 50 A at 80 % power factor. What is the sending end power factor for a receiving end voltage of 34.5 kV? a. 96 % b. 97 % c. 98 % d. 99 %
Two delta connected loads are connected in parallel and powered by a balanced Y-connectedsource. The smaller of two loads draws 10 kVA at a lagging power factor of 0.75 and the largerdraws 25 kVA at a leading power factor of 0.8. The line voltage is 400 V. Calculate a) The powerfactor at which the source is operating. b) The total power drawn by the two loads. c) The phasecurrent of each load.
Three balanced 3 phase loads are connected in parallel. Load 1 is Y–connected with an impedance of 400 + j300Ω/φ, Load 2 is ∆–connected with an impedance of 2400 −j1800Ω/φ and Load 3 is rated at 172.8 + j2203.2kVA. The loads are fed from a distribution line with an impedance of 2 + j16Ω/φ. Magnitude of line–to–neutral voltage at the load endof the line is 24√3 kV. The frequency of operation is 50Hz.(d) Calculate the compensation capacitor values connected line–to–neural at the load end of the system so that power factor satisfies pf ≥ 0.98 at the load end.(e) What if the capacitors are connected line–to–line? Which would be the better choice for the compensation, Y or ∆ connected capacitors? Explain.(f) What is the power factor at the sending end of the line?(g) Calculate percentage of the average power at the sending end of the line that is delivered to loads.
Answer the question the below Image. A single phase transmission line is delivering 500 kVA load at 2 kv. Its resistance is 0-20 and inductive reactance is 0-40. Determine the voltage regulation if the load power factor is 0-707 lagging. O 8.5 % O 7.2 % O 6.4 % O 5.3 % Continue
A short transmission line is represented by an impedance of 0.01 + jo.04. What is the voltage regulation for a unity source and full-load current of 1.934-8° per-unit? O a. 0.8% O b. 1.2% c. 2.8% d. 0.3% O O
In a positive sequence Y-connected three phase balanced system, the phase voltage in phase (a) is given as Ven = 5ej#/4. what is the line voltage Vea? Select one: O a 5/3ej(#/4+a/2) O b. 5/3e(=/4+=/6) O c. 5ej(=/4-x/2) O d. 5ej(=/4+2w/3)
In a balanced delta connected 3Ø circuit, the load in each branch consists of a 10 Ωresistance in series with an inductance 0.0318H. If the line voltage is 400 V at 50 Hz.Determine the (a) Line Current and total power in the circuit.
A three-phase transmission line is connected to a load. The sequence components of the line- to-ground load voltage and the line currents are given as follows: vo = 95e/10 kV, v = 300 kV, v2 = 200e-j10 kV lo = 0,1 = 1500 A, I2 = 100e-/90 A 1. Find the three-phase line-to-line voltages of load. 2. Find the three-phase line currents. 3. Find the three-phase power of the load.
Consider the following three phase balanced circuit. 21020° Vrms j0.5 N rell 24- j21 N 210Z-120° Vrms j0.5 N 24- j21 2 12 rell 24- j21 2 210/120° Vrms j0.5 N rell Find average power dissipated by the delta connected load. (a) 8587.18 W (b) -8587.18 W (c) 7514.41 W (d) -7514.41 w