A balanced 3 phase Y connected generator with negative sequence has an impedance of 0.3+j0.5 QVO and an internal voltage of 150 V/ 0 (rms). The generator feeds a balanced 3 phase Y connected load having an impedance of 24+ j35 QD. The impedance of the line connecting the generator to the load is 0.7 + jl.5 VO. The a-phase internal voltage of the generator is specified as the reference phasor. i. Construct the a-phase equivalent circuit of the system. ii. Calculate the three line currents: lar, Ibs and Iec. Calculate the three phase voltages at the load: Van, Vav and Ven Calculate the line voltages: VAB, VBc and Vca at the terminals of the load. Calculate the total complex power at the load, Sr. ii. iv. V.

A balanced 3 phase Y connected generator with negative sequence has an impedance of 0.3+j0.5 QVO and an internal voltage of 150 V/ 0 (rms). The generator feeds a balanced 3 phase Y connected load having an impedance of 24+ j35 QD. The impedance of the line connecting the generator to the load is 0.7 + jl.5 VO. The a-phase internal voltage of the generator is specified as the reference phasor. i. Construct the a-phase equivalent circuit of the system. ii. Calculate the three line currents: lar, Ibs and Iec. Calculate the three phase voltages at the load: Van, Vav and Ven Calculate the line voltages: VAB, VBc and Vca at the terminals of the load. Calculate the total complex power at the load, Sr. ii. iv. V.

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...

See similar textbooks

Similar questions

6. What is the effect of load inductance on the ripple current? 7. i effect of chonnine Bock and boost 8. Wh 9 What chopping 10. At what duty evcle does the load current rinnle current he
The circuit shows an unbalanced electrical installation powered by a positive sequence symmetrical three-phase network of 380 V compound voltage. The loads are single phase. Load 1 absorbs an active power of 950 W with f.d.p. 0.5 inductive. Load 2 absorbs an active power of 1,140 W with f.d.p. Unit. Load 3 absorbs from the network an active power of 760 W with f.d.p. 0.5 capacitive. Taking the network voltage URN as the phase reference, calculate: a) complex expressions of the line currents IR. Is. and IT
The circuit shows an unbalanced electrical installation powered by a positive sequence symmetrical three- phase network of 380 V compound voltage. The loads are single phase. Load 1 absorbs an active power of 950 W with f.d.p. 0.5 inductive. Load 2 absorbs an active power of 1,140 W with f.d.p. Unit. Load 3 absorbs from the network an active power of 760 W with f.d.p. 0.5 capacitive. Taking the network voltage URN as the phase reference, calculate: a) complex expressions of the line currents IR. Is. and IT RO- SO TO IR Is IT U₁-380 V CARGA 1 P₁ =950 W cos p1=0,5 ind. CARGA 2 P₂=1.140 W cos p₂=1 CARGA 3 P3=760 W cos p3=0,5 cap.
If a Load absorbs 10 kVA at a leading power factor of 0.6. Then the complex power is: Select one: a. 6000 - j8000 VA b. 6000 + j8000 VÀ C. -6000 - j8000 VA O d. None of these
An 11 kV generating station has four identical 3-phase alternatorsGl, G2, G3 and G4 each of L0 MVA capacity and l2%o reaclarce.There are two section of bus-bar P and Q, linked by a reactor X ratedat 10 MVA with 24o/oreactance. From section Q load is taken througha 6 MVA, i 1kV/66kV step-up transformer (T1) having a reactance of37o. Determine the fault current if a three-phase short-circuit occursnear the high voltage terminal of the transformer (F) as shown inFigure.Assume prefault voltages to be 1 pu and prefault currents to be zero
The distribution factor for 90 slots, 10-pole, 3-phase winding is A 0.90 B 0.895 C 0.959 D 0.978
An 11 KV generating station has four identical 3-phase alternators A,B,C and D and each of 10 MVA and 12% reactance. There are two sections of bus-bar, P and O linked by a reactor rated at connected to bus-bar section MVA with 24% reactance. Alternators A and B are and alternators C and D to bus-bar section Q. From each section, load is taken through a number of 6 MVA, 11/66KV step-up transformers, each having a reactance of 3%. Calculate the current fed into a fault if a short-circuit occurs on all phases near the high-voltage terminals of one of the transformers at the bus-bar section Q. 10 MVA 10 MVA 12% 11 11 KV 10 MVA 24% -000000 10 MVA 12% o Q 10 MVA 12% 0 11 KV 6 MVA WWW 3% /www
Which cannot be said since Z is an inductive load in the circuit given below? A) load voltage period is 0.02sec. B) Load voltage peak value is 311V. C) Load voltage frequency is 50Hz D) Load voltage average value is 220V.
In a synchronous generator * the OC voltage leads the terminal voltage by an angle known as power factor angle the OC voltage lags the terminal voltage by an angle known as power factor angle the OC voltage leads the terminal voltage by an angle known as power angle the open-circuit voltage (OC) lags the terminal voltage by an angle known as power angle
sformer 1200 KVA, 11000/2200 V, 50 Hz e reactance/phase of the primary winding ar ding values for the secondary winding are C primary winding is connected in delta and
A load has a leading power factor. a) Is it a capacitive or inductive load? b) Is the reactive power positive or negative? c) Repeat for a load with lagging power factor
If a Load absorbs 10 kVA at a leading power factor of 0.6. Then the complex power is: Select one: a. -6000 - j8000 VA b. 6000 + j8000 VÀ c. 6000 - j8000 VÀ d. None of these