With the aid of power-load angle curves explain in detail the following: i. an electronic governor’s response to frequency changes resulting from changing loads. ii. a circuit breaker’s response when a transient fault occurs iii. the response of an automatic voltage regulator to voltage dip as the result of the start-up of a high rated induction motor.

With the aid of power-load angle curves explain in detail the following: i. an electronic governor’s response to frequency changes resulting from changing loads. ii. a circuit breaker’s response when a transient fault occurs iii. the response of an automatic voltage regulator to voltage dip as the result of the start-up of a high rated induction motor.

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

Chapter11: Transient Stability

Section: Chapter Questions

Problem 11.1P

See similar textbooks

Similar questions

The factor that enables the synchronous motor to operate at different electrical load characteristics Please explain.
5a) With the aid of power-load angle curves explain in detail the following: an electronic governor’s response to frequency changes resulting from changing loads. b) A circuit breaker’s response when a transient fault occurs c). the response of an automatic voltage regulator to voltage dip as the result of the start-up of a high rated induction motor.
A 60-MVA, 69.3 kV, 3-phase synchronous generator has a synchronous reactance of 15 Ω per phase and negligible resistance. The generator is delivered rated power at 0.8 pf leading at rated terminal voltage to an infinite bus bar. Determine the magnitude of the power angle.
The rotor resistance and reactance of a squirrel-cage induction motor rotor atstandstill are 0.14 ohm per phase and 0.8 ohm per phase respectively. Assuminga transformer ratio of unity, from the eight-pole stator having a phase voltage of254 at 60 Hz to the rotor secondary, calculate the followingA. rotor starting current per phase.B. the value of slip producing maximum torque.
- What are the main parts of an single phase induction motor?Explain the function of each. - Explain the function of Ballast and Starter in the discharge lamp?! - Can we connect a 10A load to domestic socket outlet? Justify your answer. - Which type of MCB is used in motor control and why this type of MCB is chosen over other types?
6. The major failure area of a typical wound-field and wound-armature DC motor isA. brush wear and failure.B. open field windings.C. a faulty commutator segment.
1. What the importance of Open Circuit Test of synchronous generators? 2. How to control on the generated emf of 3 phase synchronous generators 3.What the role of {Automatic Voltage Regulator} AVR in synchronous generators?
A gas turbine, 2-pole, 3? synchronous generator rated at 200 MW is connected to the grid (presumed to be an infinite bus). The electrical operating frequency of the grid is 60 Hz, and the slope of the frequency-power curve for the generator is 15 MW/Hz. a. If the no-load setpoint for the generator is set to 63.5 Hz, how much active power will the generator provide to the grid? b. Neglecting system losses, what is the torque provided by the gas turbine? c. What would happen if the no-load setpoint for the generator is set to 59 Hz?
The primary leakage impedance and equivalent secondary impedance referred to stator atstandstill of a 3-phase, 220 V, 50-Hz, 4-pole induction motor are (0.4 + 3j)ohms and (1.2 + j1) ohms per phaserespectively. If the magnetizing current is neglected, determine the maximum torque the motor candevelop and slip at which it occurs.
A 25-horsepower, 230V, 60Hz, 3-phase induction motor has a Nameplate Rating of 58amperes. The nameplate also shows a temperature rise of 30°C. a) Determine the THHN Cable and TW grounding conductors.b) Conduit Size using EMTc) What is the overload size for this motor?d) Determine the locked rotor current if the motor is Code J.e) Determine the Dual-element, time-delay fuses to be used for the motor’s branch circuit.
In one or two paragraphs, describe the construction and principles of operation for a sixpole 60-Hz three-phase synchronous motor.
A three-phase, 100-MVA, 20-kV generator is connected to a three-phase, 100-MVA, 20-kV motor through a transmission line. The reactances of the generator and motor are 0.25 and 0.20 per unit, respectively. The line reactance is 0.10 per unit. The motor is taking 50 [MW] at 0.8 power factor leading at rated voltage. Suppose a three-phase short circuit occurs at the generator terminals, determine the transient currents in the generator and motor as well as the short-circuit current.