3) Load Flow Calculations: For the following calculations use the following data: System Bases Power Base: Voltage Base: Transformer Ratings Power: Voltage Ratio: Reactance: b. c. 100 MVA 3.3kV 10 MVA 13.2kV/3.3kV 10% a. Calculate the impedance base of the system. Calculate the impedance of the transformer in per unit (in the system base) Calculate the impedance of a transmission line in per unit if the real impedance the line is 0.5+j2 d. If a load is connected with 2 MW and 1 MVAR what would the equivalent impedance be, in per unit, for short circuit studies?

3) Load Flow Calculations: For the following calculations use the following data: System Bases Power Base: Voltage Base: Transformer Ratings Power: Voltage Ratio: Reactance: b. c. 100 MVA 3.3kV 10 MVA 13.2kV/3.3kV 10% a. Calculate the impedance base of the system. Calculate the impedance of the transformer in per unit (in the system base) Calculate the impedance of a transmission line in per unit if the real impedance the line is 0.5+j2 d. If a load is connected with 2 MW and 1 MVAR what would the equivalent impedance be, in per unit, for short circuit studies?

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.
3) A three-phase transformer of 60 kVA (three-phase power), 13200/480 V (line A line) in delta-strella connection has a resistance of 0.02 PU and a reactance of 0.08 PU. For this transformer, calculate: a) The voltage regulation at full load and F.P. 0.85 in delay. (b) The regulation of voltage voltage to full cargo and F.P. Unitarian. c) The voltage regulation at full load and F.P. 0.85 in advance.
Transformers are widely used for industrial and residential applications. In long distance electrical power transportation, they play importants role for efficiency and safety improvement by increasing and decreasing the voltage levels during transmission. However, some aspect in using of the transformer need to be considered as they can have bad effect to the enviromental. Please discuss the potential risks of the transformer to the environment and the important actions to be taken to reduce the risk for environmental sustainability.
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).
The equivalent resistance and reactance referred to the secondary side of a 10 kVA, 2200/440 V, single phase transformer are 0.3 and 1.20 respectively. Then find the full load voltage regulation at (i) 0.8 lagging (ii) unity and (iii) 0.6 leading power factor.
It is bartleybe's policy that if questions objective than you need to solve at least first 3 questions.
Note: please solve the correct solution
A single-phase transformer rated 2400 – 277 V, 50 kVA, 60 Hz is tested with the following results: Open-Circuit Test: 277V, 4.51 A, 735 W. Short-Circuit Test: 51.4V, 19.6 A, 368 W. Determine the followings; 20. The series equivalent impedance referred to the HV side (ohms). 21. The series equivalent impedance in per-unit. 22. The magnetizing branch impedances referred to the LV side (ohms). 23. The magnetizing branch impedance in per-unit. 24. The full-load efficiency (%) when operating a load drawing rated power at rated voltage and unity power factor. 25. The voltage regulation (%) when operating a load drawing rated power at rated voltage and unity power factor.