2. In the system shown below, the generator is ideal (Xs = 0) and the magnitude of theload bus voltage, VL is to be held at 110 kV. Working on a system base of 100 MVAand a base voltage of 115 kV in the load circuit:a)b)draw the single-phase equivalent pu reactance diagram, anddetermine the necessary generator terminal voltage VG (kV).Transformer 1200 MVA25 kV : 600 kVX = 5%Transformer 2150 MVA500 kV: 115 kVX = 6%LineX = 60 NLoadS = 120 MVApf = 0.85 lagVGVT1VT2VL

Answered: Image /qna-images/answer/40b44990-9ff6-49d5-8219-ec33c38a3ba3.jpg

Answered: In the system shown below, the…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

Here is a single phase transformer, 15 kVA, 15000/380 V, 50 Hz has Ze-0.02+j0.05 perunit, R. 50 perunit, and Xm =30 perunit, (per unit = actual value/base value), for scaling of the problem. (pu). A) Compute and draw the equivalent circuit components in Qs referred to the low-voltage side, B) Low voltage side is connected to a load of 4L 90° (lagging) and HV side is supplied by 15KV, compute voltage drop on the load V2 and voltage regulation VR.
A 1500 KVA, star connected 2300v, 3 phase salient pole synchronous generator has reactance ph/95.1xd and phase/40.1xq All losses may be neglected. Find the excitation voltage for operation at rated KVA and power factor of 0.85 lagging.
A synchronous generator supplies rated power at 0.8 pf lagging.ra = 0.015p. u., andxl 1p.u. . Find out the possible terminal voltage. In case of the practical operation, which terminal voltage is more feasible? =
2.2. The figure below shows a radial transmission system with a generator having a per-unit voltage of 1.3 at an angle of 9 degree p.u. The load demand is 47MW at a power factor of 0.96lagging. Use the nameplate values of Transformer 2 as base values and calculate the following: Correct answers to three decimal places : 25..Per unit impedance of transformer and it's angle 26.Per unit voltage of the line and its angle 27.Per unit impedance of the line and its angle. And Reactance of the transmission line when the load consumes full-load (Ω).
3. Which one of the following method uses weak coupling between reactive power and voltage angle?. A. Newton - Raphson Method B. Decoupled Method C. Gauss-Seidal Method
Athree-phase, wye-connected, 6.25 kVA, 220 V synchronous generatorhas a reactance of 8.4 Q perphase. Using the rated kVA and voltage as basevalues, determine the per-unit reactance. Then referthis per-unit value to a 230 V, 7.5 kVA base.
A generator is connected through a transformer to a synchronous motor as shown in the following figure. (All values in this problem are per unit.) Before the fault V,=0.9,1=1 with power factor 0.8 lagging. jX, P + jX ds jX" dm + E. E The reactances are Xd=0.15 , X,=0.1 , X âm=0.35. A symmetric fault occurs at P. Find the per-unit current magnitudes in the fault, the generator and the motor (a) using subtransient voltages. (b) using a Thevenin equivalent.
For the system shown in figure, voltages V2, V3 and angles 82, 83 are calculated using Newton-Raphson method. shunt line charging admittances are neglected. All the values are given in per unit on 100MVA base. Calculate the complex power flows S12 and S32 in actual units. 1) Z12 = 0.01+ j0.02 Z3 = 0.02+ j0.04 PL G QL Slack bus V2 = 0.96L -1.67° V3 = 0.884 - 5.48° Vi=1.0/0° (estimated time to answer this question: 13 minutes)
EXPLAIN THE THREE-PHASE GENERATED EMF PRODUCED BY SYNCHRONOUSALTERNATOR.
Problem 6.1 A turbo generator has 4 poles. Determine the speed of the steam turbine driving it to obtain a fre- quency of 50 Hz. Problem 6.5 A 3-phase, 50 Hz synchronous generator has 200 conductors per phase. The flux per pole is 30 mWb and the winding factor is 0.96. What is the value of the line voltage if the stator winding is connected in (a) delta, and (b) star?

Recommended textbooks for you

Introductory Circuit Analysis (13th Edition)

Electrical Engineering

ISBN:

9780133923605

Author:

Robert L. Boylestad

Publisher:

PEARSON

Delmar's Standard Textbook Of Electricity

Electrical Engineering

ISBN:

9781337900348

Author:

Stephen L. Herman

Publisher:

Cengage Learning

Programmable Logic Controllers

Electrical Engineering

ISBN:

9780073373843

Author:

Frank D. Petruzella

Publisher:

McGraw-Hill Education

Introductory Circuit Analysis (13th Edition)

Electrical Engineering

ISBN:

9780133923605

Author:

Robert L. Boylestad

Publisher:

PEARSON

Delmar's Standard Textbook Of Electricity

Electrical Engineering

ISBN:

9781337900348

Author:

Stephen L. Herman

Publisher:

Cengage Learning

Programmable Logic Controllers

Electrical Engineering

ISBN:

9780073373843

Author:

Frank D. Petruzella

Publisher:

McGraw-Hill Education

Fundamentals of Electric Circuits

Electrical Engineering

ISBN:

9780078028229

Author:

Charles K Alexander, Matthew Sadiku

Publisher:

McGraw-Hill Education

Electric Circuits. (11th Edition)

Electrical Engineering

ISBN:

9780134746968

Author:

James W. Nilsson, Susan Riedel

Publisher:

PEARSON

Engineering Electromagnetics

Electrical Engineering

ISBN:

9780078028151

Author:

Hayt, William H. (william Hart), Jr, BUCK, John A.

Publisher:

Mcgraw-hill Education,

SEE MORE TEXTBOOKS