A power system consists of 4 synchronous generators of 200 MVA, 10 kV in parallel, each with a power factor of 0.90 delayed at 60 Hz. Three generators operate providing 150 MW. The fourth generator is being adjusted to compensate for load variations (adjustment generator). Consider that Each motor-generator drops 8 Hz from empty to full load. If the load increases up to 550 MW, what will be the frequency of the system?

A power system consists of 4 synchronous generators of 200 MVA, 10 kV in parallel, each with a power factor of 0.90 delayed at 60 Hz. Three generators operate providing 150 MW. The fourth generator is being adjusted to compensate for load variations (adjustment generator). Consider that Each motor-generator drops 8 Hz from empty to full load. If the load increases up to 550 MW, what will be the frequency of the system?

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.24P: For Problem 3.18, the motor operates at full load, at 0.8 power factor leading, and at a terminal...

See similar textbooks

Similar questions

For Problem 3.18, the motor operates at full load, at 0.8 power factor leading, and at a terminal voltage of 10.45 kV. Determine (a) the voltage at bus 1, which is the generator bus, and (b) the generator and motor internal EMFs.
A power plant comprises three turbine-generators rated 1000 MW, 800 MW and 500 MW respectively. The regulation constant of each generator is 0.05 pu based on its own rating. Each unit is initially operating at one-half of its own rating, when the system load suddenly increases by 300 MW. Calculate the following:a) Per-unit area frequency response characteristic on a 1000 MW system base.b) Steady-state drop in area frequency [CR4]c) The share of the load increase on each generator.d) Total load on each generator after the increase in system load.Assume the reference power setting of each turbine is unchanged.
Energy Question-1) Three identical synchronous generators were connected in parallel and the idle frequency values of each generator were set to 54 Hz. The frequency - power characteristic slopes of the first and second generators are 5.3 MW/Hz and the slope of the third generator is 3.9 MW/Hz. When these three identical synchronous generators feed a load together, the system frequency becomes f=51.7 Hz. According to this;a-) Calculate the active power value that the first generator will provide to the load.b-) Find the active power that the second generator will provide to the load.c-) Find the active power that the third generator will provide to the load.d-) Calculate the power of the load.(All values in options a, b, c, and d in this Question will be entered as two digits after the comma.) NOTE: If the information in the text and the photo is different, please solve the question using the information given in the photo. Help me please... Thank you so much.
A manufacturing plant takes 200,000 Watts, at 0.6 power factor. Form a 600 V, 60 Hz, three phase system. It is desired to raise the power factor of the entire system to 0.9 by means of a synchronous motor, which at the same time is to drive a direct current shunt motor generator, requiring that the synchronous motor take 80,000 watts form the line. What should be the rating of the synchronous motor in volts and amperes?
A power plant comprises three turbine-generators rated 1000 MW, 800 MW and 600 MW respectively. The regulation constant of each generator is 0.05 pu based on its own rating. Each unit is initially operating at one-half of its own rating, when the system load suddenly increases by 250 MW. Calculate the following:a) Per-unit area frequency response characteristic on a 1000 MW system base [CR9]b) Steady-state drop in area frequency [CR4]c) The share of the load increase on each generator [CR9]d) Total load on each generator after the increase in system load [CR3]Assume the reference power setting of each turbine is unchanged.
A 1000KVA, 6.6 kV 3 PHASE star connected cylindrical pole synchronous generator has 20-ohm as synchronous reactance and the armature resistance is negligible and the generator is working at the full load and unity power factor then find the value of the induced emf voltage(line to line).
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.
correct or dislike clear answer The equivalent synchronous reactance of a 10kVA 230V three-phase synchronous generator is 1.2Ω, and the armature resistance is 0.5Ω.Find the load power factor so that the voltage fluctuation rate of the generator becomes 0 at full load.
JR (Jalbuena-Rojas) Industrial and Manufacturing Corporation is rated 4,000 kVA at a power factor of 70% lagging. For the purpose of improving the corporation's power factor, The Board of Directors headed by Engr. M. Alcantara decided to connect a synchronous motor of 1,500 kVA. If the synchronous motor to be connected has a load capacity of 800 Hp at an efficiency of 88% , determine the corporation's new over-all power factor.
A 3-Phase 10Kva, 400 V, 50Hz star connected alternator supplies a rated load at 0.8 power factor lagging. If the armature resistance per phase is 0.5Ჲ and the synchronous reactance is 10Ჲ, using the e.m.f method, estimate the alternator’s voltage regulation
. A three phase 50MVA, 10kV cylindrical rotor generator has armature resistance of 0.1pu and synchronous reactance of 1.65pu is connected to an infinite bus. The generator delivers 2000A at 0.9 leading power factor to the infinite bus at 10kV. Determine the internal voltage E and the power angle of the generator. What would be the short circuit current assuming same level of excitation.
An 11 kV, three-phase, turbo alternator has a synchronous impedance per phase of(0,4 + j0,8) Ω and it supplies 2 kA at unity power factor to an infinite bus. Theexcitation is increased so that the emf is increased by 20%. Sketch a general loaddiagram and determine the following from this diagram: the armature current for maximum power output, the actual maximum power output