Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Physics Expert

problem: A 3-phase synchronous generator is joined to a step-up transformer T1, which is joined to a 60 km long transmission line. As the far end of line, a step-down transformer bank T2 is joined. The secondary of T2 supplies the two loads L1 and L2.
The ratings for the different parts of the system are as shown below:

Generator:               10 MVA, 12kV, X = 20%, star connected
T1:                            5 MVA, 12/69 kV, X = 10%
T2:                            5 MVA, 69/4.16 kV, X=10%
L1:                            2000 kVA at 0.8 pf lagging
L2:                            1000 kVA at 0.75 pf lagging
Transmission Line:    X = 0.5 W/km (R is negligible)

A) Draw the per-phase equivalent circuit of power system showing all the reactance in per unit and show the base voltages employed at different parts of the network by using 10 MVA and 12 kV as base quantities in the generator circuit.

B) If the voltage on load busbar should be maintained at 4.16 kV, find out the required excitation on the generator.

C) For this excitation, find out the short circuit current (in amperes) if a three-phase fault takes place on the secondary winding of transformer T2.

Physics, Academics

  • Category:- Physics
  • Reference No.:- M99916

Have any Question? 


Related Questions in Physics

How do redundant arrays of independent disks raid work

How do redundant arrays of independent disks (RAID) work? These are information storage systems consisting of about ten disk drives, of which any two or three can be disabled and the others are able to still able to reco ...

1 why can heavy nuclei with odd numbers of neutrons be

1. Why can heavy nuclei with odd numbers of neutrons be induced to fission with thermal neutrons, whereas those with even numbers of neutrons require more energy input to induce fission? 2. Why is a conventional fission ...

A gas turbine disc in a modern jet engine has a mass of 150

A gas turbine disc in a modern jet engine has a mass of 150 kg, a diameter of 1 metre, and spins at 10 000 rpm. Taking a simplified model of the shape of the disc as a uniform thick ring with inner and outer diameters of ...

Jorge has learned that he has a mental illness since then

Jorge has learned that he has a mental illness. Since then, he has begun to act according to the illness, in ways that he thinks others expect someone with a mental illness to act. Which theory of health and illness best ...

In the circuit the capacitor is fully charged when switch s

In the circuit, the capacitor is fully charged when switch S is closed. Calculate the time needed for the potential energy stored by the circuit to be equally distributed between the capacitor and inductor. The capacitan ...

Bullets of mass22g are fired in parallel paths with speeds

Bullets of mass2.2g are fired in parallel paths with speeds of216m/s through a hole2.0mm in diameter. How far from the hole must you be to detect a1.4cm diameter spread in the beam of bullets?

Describe the relationship between electron orbital energy

Describe the relationship between electron orbital energy levels and the energy of light that electrons emit for atoms in a gas.

What do you think are the two most important functions of

What do you think are the two most important functions of the family? Give at least one example for each function to demonstrate why you think it is important to a person's overall life outcomes. Explain whether you thin ...

1 using the expression for the gradient in polar

1. Using the expression for the gradient in polar coordinates (Appendix A), find the gradient of ψ(r,θ) when Where is the gradient maximum? The terms A and a are constant. 2. Given the following expression for the pressu ...

A 162 g mass is hung on a spring as a result the spring

A 162 g mass is hung on a spring. As a result the spring stretches 19.5 cm. If the object is then pulled an additional 3.0 cm downward and released, what is the period of the resulting oscillation? Give your answer in se ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro