Determine the subtransient fault current

Assignment Help Other Engineering
Reference no: EM131140585

As shown in Figure, a 25-MVA, 13.8-kV, 60-Hz synchronous generator with X"d = 0:15 per unit is connected through a transformer to a bus that supplies four identical motors. The rating of the three-phase transformer is 25 MVA, 13.8/6.9 kV, with a leakage reactance of 0.1 per unit.

1846_fig.png

Each motor has a subtransient reactance Xd" = 0.2 per unit on a base of 5 MVA and 6.9 kV. A three-phase fault occurs at point P, when the bus voltage at the motors is 6.9 kV.

Determine:

(a) the subtransient fault current,

(b) the subtransient current through breaker A,

(c) the symmetrical short-circuit interrupting current (as defined for circuit breaker applications) in the fault and in breaker A.

Reference no: EM131140585

Questions Cloud

What the thesis statement of your paper will be : In your introduction, please make clear what the thesis statement of your paper will be. The thesis statement is that compelling idea or vital piece of information you are trying to communicate in this paper.
Describe capabilities of database management systems : Describe capabilities of database management systems - Evaluate the challenges and benefits of data management systems.
Determine the maximum symmetrical interrupting capability : Determine the maximum symmetrical interrupting capability of the breaker. Also, explain its significance at lower operating voltages.
How does our current party system impact election : How does our current party system impact elections? How can a minor party play a part in an election? Discuss the structure and role of party organizations.
Determine the subtransient fault current : Determine the subtransient fault current - the subtransient current through breaker A,
Identify specific skills and actions you would employ : xplain the role of social workers on an international level in relation to the rights of the LGBTQ community. Identify specific skills and actions you would employ as an advocate.
What article of the constitution is commander in chief found : Under what article of the Constitution is Commander in Chief found? What article in the Constitution deals with the Judicial Branch
Find the values of ß and m required to satisfy specification : Find the values of β and M required to satisfy this specification
Write a paper on the given topic : Write a paper- Your organization recently decided to expand abroad. Now, you need to create a strategy necessary to implement the expansion plan.-Your strategy must include:-Country you plan on moving into;

Reviews

Write a Review

Other Engineering Questions & Answers

  Calculate the degree of conversion

Calculate the degree of conversion if the feed to an ammonia synthesis reactor is a mixture of N2(g), H2(g) and NH3(g) in the mole ratio 1:3:0.1 at 800 K and 100 bar. Assume that the reaction mixture behaves like an ideal gas.

  Design and build a signal conditioning system from sensor

DATA AQUISITION Lab Project - Design and build a signal conditioning system from sensor to 4-20ma transmission to 0-10V controller input. Using LABVIEW preferably 2015 edition

  Write a vhdl module for an 8-bit accumulator for subtraction

If A = B = 1, the value of the data inputs D are subtracted from the accumulator. If A = 1 and B = o, the value of the data inputs D are loaded directly into the register. If A = o and B = 1, the accumulator should shift right with zero fill. I..

  Evaluating the locations of charging stations

Tesla Motors recently announced their new model 3, which is a less expensive version of their model S. The company received over a quarter of a million pre-orders. Since the launch, potential buyers have been evaluating the locations of charging s..

  Normally biased bjt circuit comprising of a bjt

To analyze a normally biased BJT circuit comprising of a BJT and resistors and measure the circuit voltages between emitter, common, base, and collector.

  Production system of four serial automatic workstations

A medical facility treats non-emergency patients. Patients arrive according to an exponential interarrival time with a mean of 15 minutes. Upon arrival they check in at a registration desk staffed by a single nurse. Registration times follow a tri..

  Create a table of temperature-rtd

In a processing plant, a chemical tower has a liquid which is vaporized. However, if the vapor in the tower reaches 150°C, an alarm needs to be generated so that safe shutdown of that system of the plant may be initiated. An RTD will be used to me..

  Compute the fault currents and voltages

Compute the fault currents and voltages for the following faults occurring at the faulted bus.

  Breakdown structure for super jom

The scenarios are these: You have been asked to help your best friend plan a wedding or a family reunion in another city. You have no concern for schedule or budget at the moment, only defining the work that needs to be done for the wedding or r..

  Prove that the shannon expansion theorem

E15: Fundamentals of Digital Systems - Fall 2010 - HOMEWORK 5. Prove that the Shannon expansion theorem works for any Boolean function expressed as sum of product terms

  Find ron of an nmos transistor

Consider MOS transistors fabricated in a 65-nm process for which μnCox = 470 μA/V2, μpCox = 190 μA/V2, Vtn =-Vtp = 0.35 V, and VDD =1 V. Find Ron of an NMOS transistor with W/L = 1.5.

  Calculate the impingement rate and mean free path

Briefly describe why thermal oxidation of silicon has both linear and parabolic components to the growth rate - Calculate the impingement rate and mean free path for oxygen molecules

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd