Prepare a capacity outage Probability table for a 3 generator system with each having a capacity of 50MW. Forced Outage Rate for each unit is 0.05.
Q: A 50 MVA, 11 kV synchronous generator has internal reactance of 0.8 Q. The generator is connected to…
A: In this question we have to find out per unit impedance of generator when connected to new power…
Q: The mechanical power in the above power system is P=1.0 . All values are expressed in per unit.…
A: a) prefault electric power and rotor angle 1) prefault condition prefault impedance XA=0.202+0.30…
Q: Question 1 For a two-bus power system, a 0.7 + j0.4 per unit load at bus 2 is supplied by a…
A: Given: Now calculate the bus admittance matrix So,
Q: Q.6: A (500 MW) synchronous generator is delivering (100 Mw) to infinite bus through the unit…
A:
Q: Explain fault analysis in power system by fuzzy logic or artificial neural networks with neat…
A: Artificial Neural Network (ANN) or Fuzzy logic can be applied to the power system fault analysis…
Q: jX, (1) 2 3x. iX; E, O E. Figure 1
A: Three phase short circuit occur at bus 2 a) Calculating sub transient generator current Ig…
Q: Factors in selecting service conductors. Factors in selecting generator
A: (a)There are number of factor sin choosing the service conductors that are mentioned below.
Q: Find the unkowns of each bus by using Gauss Siedel Method
A: Formulate YBUS y12=1Z12=10.02+j0.04=10-j20y13=1Z13=10-j30y23=1Z23=10.0125+j0.025=16-j32…
Q: How does field distortion affect commutation ? ( DC GENERATOR QUESTION)
A: The armature reaction cause the alteration with the main field and cause the demagnetization or the…
Q: Q2:- a synchronous generator is 25 MVA, 11kV, it is star- connected with the neutral point solidly…
A: Given:X1=X2=0.2puX0=0.08pu Consider power base is 25 MVA and voltage base is 11 KVVoltage PU =1
Q: Determine the equivalent circuit of synchronous machines. Then, Determine the phasor diagram for…
A: A synchronous generator is a synchronous machine that uses electromagnetic induction to transform…
Q: A three phase synchronous generator with negligible resistance and Xs=20 ohm has induced voltage as…
A: Given: Per phase quantities, Induced voltage E=230 VTerminal voltage V=230 VSynchronous reactance…
Q: a) Two thermal generator units have the following incremental cost curves then determine the…
A: The incremental cost functions are given as F1=0.22+0.16 P1F2=0.48+0.41 P2and Unit 1:…
Q: Draw the reactance diagram of the given one-line diagram below marked in appropriate per unit…
A: There will be three sequence networks in the given power system- Positive-sequence network…
Q: The per-unit reactances of a synchronous generator are X4 = 1.1, X = 0.24, and X, = 0.15. The…
A: Subtrasient current in p.u= voltage / subtrasient reactance in p.u. Subtrasient current in Amps =…
Q: In a 7-bus system, the double line fault is occurred at bus -5. During fault the positive sequence…
A: Correct option is B Given V01= 0.0175 I = -j0.148
Q: Automatic voltage regulator will have the ability to maintain the a. Nose point - that can be…
A: Automatic voltage regulator is a solid state electronics device used for maintaining generator…
Q: For two parallel synchronous generators of the same size and same droop in frequency-Active Power…
A: for two parallel synchronous generators of the same size and same droop in frequency active power…
Q: Critical clearing time of a fault in power system is related to steady state stability limit True…
A: Critical clearing time is the maximum time that is allowed to remove the disturbance without…
Q: in a tie-bus arrangement as shown in figure. the reactances of the generators and reactors are 0.2…
A: We redraw the circuit on per phase per unit basis: In the circuit the fault point is connected to…
Q: 1.The system consumes 150KW, 208V line to line at 0.8 lagging power factor from parallel generator…
A: Given The system consumes 150KW, 208V line to line at 0.8 lagging power factor from parallel…
Q: Q14. In paralleling of synchronous generators, the machines that are to be paralleled must have the…
A: Conditions for parallel operation of alternators (synchronous generators) : -Bus bar voltage of the…
Q: A three-phase, 250 MVA, 16 kV rated synchronous generator is feeding into an infinite bus bar at 15…
A: Synchronous generator rating 250MVA and 16 kV Synchronous reactance=1.62 up and E=24 kV a)The line…
Q: As shown in Figure 1, a synchronous generator and motor are rated 100 MVA, 13.8 kV.??"=0.2per unit,…
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Q: Find the effect of ‘clearing time’ on transient stability. Using the equal area criterion method…
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Q: A 60-Hz synchronous generator having inertia constant H = 5 MJ/MVA and a direct axis transient…
A: Given f= 60 Hz H=5 MJ/MVA S= Pe+j Q =0.8+ j 0.074 V= 1 pu =1∠0
Q: The 3-φ generator is rated 25 MVA, 13.8 kV. The positive, negative and zero sequence reactances are…
A: Among the various types of unsymmetrical fault, LG fault is the most severe fault.
Q: A 60-Hz synchronous generator having inertia constant H = 5 MJ/MVA and a direct axis transient…
A:
Q: Given the network shown, for a solid three phase fault on bus 2 (a) find the subtransient current in…
A: The state where the three conductors are physically held together with zero impedance between them,…
Q: ) the internal voltage of the generator and
A: Per unit (pu) system - Per unit (pu) system is used to express system quantity in the form of ratio…
Q: A salient-pole generator without dampers is rated 20 MVA, 13.8 KV and has a direct-axis subtransient…
A:
Q: Four similar synchronous generators are sharing equally the feed to a load of 1 pu referred to the…
A: To find the correct option from the given statements
Q: The synchronous generator in the given figure is operating at rated MVA, 0.75 pf lagging and at 8%…
A: The synchronus generator in the given figure is operating at rated MVA ,0.75 pf lagging and at 8%…
Q: -The symmetrical fault occurs in the terminals of the synchronous generator. Find the direct axis…
A: Find the direct axis transient reactance of the synchronous generator the transient period for the…
Q: Q5 (b) A synchronous generator and a motor are both rated at 30MVA, 2kV and both have transient…
A: As per the guidelines of Bartley we supposed to answer first three subpart only for solution of…
Q: 8. How do you differentiate between normal neutral plane ? (DC GENERATOR QUESTION)
A: The normal neutral planes are: GNA - Geometrical neutral axis MNA - Magnetic neutral axis
Q: Problem 2 Two shunt generators A and B operate in parallel and their load characteristics maybe…
A: Here Two shunt generators A and B operate in parallel load characteristics are straight lines of…
Q: Two generating units rated for 500 MW and 400 MW have governor speed regulation of 6.0 and 6.4…
A: Here speed governor is given and we need to find new speed governor at 1000MW base
Q: Consider a single line to ground fault at the neutral end of a Y-connected stator winding of a…
A: Single line to ground fault-: ER→ = I1→ Z1 + I2 →Z2 + I0→ Z0 + VR where; VR→ = 0I1→ = I2→ = I0→…
Q: 1) A 50 Hz, 3.75 MVA, 3.18 kV, three-phase synchronous generator with rated (nominal) current of In…
A: Unsaturated synchronous reactance When the value of the Field current is lower , then the machine is…
Q: Explain how active load and reactive load sharing is achieved between synchronously connected…
A: Load sharing: Load sharing is the dividing the total load(i.e. Kw and Kvar) in proportion to the…
Q: 10.If the number of poles is constant, how to control on the generated frequency of 3 phase…
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Q: Describe the generator control Schemes for wind electric Schemes
A: Wind generators function on a easy principle. The electricity within the wind turns or three…
Q: 6- Why it is possible to short circuit the differ tia generator and not the cumulative compound…
A: Compound generator consists of both series and shunt filed windings. If the flux produced by both…
Q: A salient-pole generator without dampers is rated 20 MVA, 13.8 KV and has a direct-axis subtransient…
A: In this question we need to find a the zero sequence voltage during single line to ground fault.
Q: What is the reason for drop in Generator’s Terminal voltage, from No load to Full load?
A:
Q: A 10 MVA, 6-6 kV, 3-phase star-connected alternator having a reactance of 20% is connected through a…
A: The last digits of student ID is 21. Given information We need to draw the transmission line and…
Q: A 60-MVA, 69.3 kV, 3-phase synchronous generator has a synchronous reactance of 15 Ω per phase and…
A:
Q: A MVA, 20 KV, three-phašė ģenēřātor has a subtransient reactance of 20%. The generator supplies a…
A: Solution- For generator, S = 300 MVA V = 20KV X = 20% For motor 1, S = 200 MVA V = 13.2 KV X= 20%…
Q: a) The one line diagram of a three phase system is shown below, draw an impedance diagram showing…
A: It is given that:
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- 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.With the same transformer banks as in Problem 3.47, Figure 3.41 shows the oneline diagram of a generator, a step-up transformer bank, a transmission line, a stepown transformer bank, and an impedan load. The generator terminal voltage is 15 kV (line-to-line). (a) Draw the per-phase equivalent circuit, aounting for phase shifts for positive-sequence operation. (b) By choosing the line-to-neutral generator terminal voltage as the reference, determine the magnitudes of the generator current, transmiss ion-line current, load current, and line-to-line load voltage. Also, find the three-phase complex power delivered to the load.Discuss system demand and generator loading
- Three-phase, 60-Hz synchronous generator is connected through a transformer and paralleltransmission lines to an infinite bus. All reactances are given in per-unit on a common systembase. If the infinite bus receives 1.0 per unit real power at 0.95 p.f. lagging, determinea) the internal voltage of the generator andb) the equation for the electrical power delivered by the generator versus its power angle δ.Select generator rating as base valueGive the names of shaft misalignments occuring in power transmission systems, draw the sketches for each of them and explain their features. For each kind of misalignment propose at least one type of appropriate coupling, which can assure the proper way of operation.give solution as soon as possible.
- A (500 MW) generator is delivering (180 MW) to infinite bus through the unit transformer and double transmission lines. The per-unit ractances for a given system are shown in figure below andall the reactances are based on (100 MW) base. The generator emf is ( 1.35p .u.). Determine whether the system remains stable after one circuit of the lines is switch off?Question 1: Figure 1 shows a single-line diagram of a three-phase, 60-Hz synchronous generator, connected through a transformer and parallel transmission lines to an infinite bus. All reactances are given in per-unit on a common system base. If the infinite bus receives 1.0 per unit real power at 0.95 p.f. lagging, determine (a) the internal voltage of the generator and (b) the equation for the electrical power delivered by the generator versus its power angle δ.A 24,000 kVA, 17.32 kV, three-phase, 60 Hz synchronous reactance of 5 Ω/phase and negligible armature resistance. At a certain excitation, the generator delivers rated load, 0.8 pf lagging to an infinite bus bar at a line the line voltage of 17.32 kV. Determine the excitation voltage per phase