1-The following sequence currents were recorded in a power system under a fault condition Ipositive=j1.5pu, Inegative=–j0pu, Izero=– j0pu. The fault is a.Three-phase b.Double Line to ground c.Line to ground d.Line to line

Q: 5.26 An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z, =…

A: Given, An unloaded generator with pre-fault voltage, E = 1 pu Zero sequence impedance, Zo=j0.15 pu…

Q: Two alternators rated 15 MVA and 20 MVA have per unit  reactance of 0.20 and 0.60 respectively are…

A: In this question,  Two alternators rated 15 MVA and 20 MVA have per unit reactance of 0.20 and 0.60…

Q: For the following single line diagram of a three-phase system, a three-phase fault occurs at point P…

A: Given data : G1 = 20mvA     = 6.9kv which  is taken as base value Xg1 = 0.15  pXg2 at new Base =…

Q: The negative sequence current of a solidly grounded generator for single line to ground fault is j…

A: Given that  negative sequence current of SLG fault is  Ia2 =j2.5 pu. Although for single line to…

Q: 3.On a double line-to-ground faultImmersive reader A) The short-circuit currents in the faulted…

A: In this question , we will write about double line to ground fault....

Q: Which of the following is not a boundary condition for an SLG fault on phase 'a' of a power system?…

A: Since the single line to ground fault occurs on the phase a of the system the fault current of phase…

Q: protective relay. o uonRJado pn unM DAIRUIDJO0O SI b) A fault occurs at bus 3 of the network shown…

A:

Q: Q3/A/ Fill in the blanks: 1. The most common type of 3-phase unsymmetrical fault is 2. In a balanced…

A: The solution is given below

Q: A fault occurs at bus 4 of the network shown in Figure Q3. Pre-fault nodal voltages throughout the…

A: x=1y=7Note: reactance of element right to bus 4 is not given. Hence we will not consider that in…

Q: The negative sequence current of a solidly grounded generator for single line to ground fault is j…

A:

Q: 1 Xline = j0.30 00 X" = j0.15 X" = j0.20 Xiine = j0.30 Xire = j0.30 %3D 3 1. Find the Thévenin…

A: The answer as given below:

Q: Can any one solve ?

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Q: A 15 MVA, 6.9 KV generator has ( X1=X2= 0.25p.u., Xo= 0.07p.u., and Xn= 0.06p.u.).

A: Given: X0 = 0.07 p.u Xn = 0.06 pu  X1 = X2 = 0.25 pu  15 MVA 6.9 KV  Formula used: If = 3EX1+X2

Q: A short circuit occurs in the series R-L circuit with V = 20 kV, X = 8 ohm, and R = 0.8 ohm. The…

A: Given V- 20 kV R= 0.8 ohm X= 8 ohm

Q: Q the following Sequence curent were recorded under an un balanced fault condition La =-J1.653 p.u…

A: The solution is given below

Q: Q.3 When a line-to-ground fault occurs, the current in faulted phase 'a' is 100A. The zero-sequence…

A: Given- Line to ground fault- Current in the faulted phase=100 A, To Find- The zero-sequence current.

Q: 11 A 25 MVA, 11 kV, 3-phase alternator has x d = 0.25 pu, Z₂ = 0.3 pu and Zo = 0.2 pu. It's neutral…

A:

Q: In a power system the fault is occurred in all the lines and to the ground without fault impedance…

A: all the line and to the ground fault is symmetrical fault.

Q: ort-circuit occurs at its terminals. The fault MVA and fault

A: In this question, alternator ratings are given..3 phase short circuit occurs at terminals..We have…

Q: b) A fault occurs at bus 2 of the network shown in Figure Q3. Pre-fault nodal voltages throughout…

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Q: Figure 2 shows the circuit of a simple power system. The ratings of the generators, transformers and…

A: As per the guidelines of Bartleby we supposed to answer 1st three subparts of the question. For…

Q: The sequence components of the fault Izero = -j1pu. The type of fault in the system is current are…

A: The sequence components of the fault current are, Ia1=j2 puIa2=-j0.5 puIa0=-j1.5 pu

Q: A 3 phase fault occurs at bus 1. Fault impedance Z, =j0.2 p.u. Z,, = 0.07286 p.u. Then the fault…

A: In this answer we will try to find out the fault current at bus-1 as shown below. Fault current is…

Q: ence components of the fault current are as Ipositive 12 p.u., Inegative and Izero The type of fault…

A: SOLVE ABOVE QUES

Q: A line to ground fault occurs on the terminals of an alternator, sequence voltages and sequence…

A: The given data is shown below:

Q: :A three phase alternator 100 MVA, 13.5 KV, exposure to types of faults are fallowing: Balanced…

A:

Q: FROM THE DIAGRAM ATTACHED SOLVE FOR  i) An equation for the fault current when a…

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Q: A report on Fault analysis in presence of renewable energy sources.

A: Fault in electrical equipment or apparatus refers to an imperfection in the electrical circuit due…

Q: The sequence components of the fault current are as follows: Ipositive = j 2 p.u., Inegative = -j0.5…

A: Given, The sequence components of the fault current are, Ia1=j2 puIa2=-j0.5 puIa0=-j1.5 pu

Q: Q.3 When a line-to-ground fault occurs, the current in faulted phase 'a' is 100A. The zero-sequence…

A:

Q: What is subtransient and transient fault current? How do they occur in a system?

A: In a system before the fault occurs voltage and current both are symmetrical AC but when a 3 phase…

Q: The severity of line-to-ground and 3-phase faults at the terminals of an unloaded star connected…

A: Given, Terminal voltage, E = 1 pu Positive, negative, and zero sequence reactance is X1=X2=j0.35 pu…

Q: The source impedance at a 15.47kV distribution substation bus is 0.4 + j1.5 ohms per phase.…

A: source impedance = 0.4+ j 1.5 ohm V=15.47 kV

Q: Figure 2 shows the circuit of a simple power system. The ratings of the generators, transformers and…

A:

Q: The sequence components of the fault Izero -j1pu. The type of fault in the system is current are as…

A: In this question we need to identify the type of fault

Q: Baded generator with a pre-fault voltage 1 pu has the following sequence impedance: Zo = 0.15 pu, Z₁…

A: Given, An unloaded generator with pre fault voltage, E = 1 p.u. Having following sequence impedances…

Q: 13. _______ current attempts to return to the source over any available conductive path. A. Direct…

A: The power system has to transmit power from the generation side to the load side. For this purpose,…

Q: Q.3 When a line-to-ground fault occurs, the current in faulted phase 'a' is 100A. The zero-sequence…

A: