In a 7-bus system, the double line fault is occurred at bus -5. During fault the positive sequence potential difference between the bus-4 and bus-1is found to be 0.0175. what is the line impedance which is connected between bus-4 and bus-1 if the current flor through transmission line is -j 0.148? Select one: O a. -jo.182 O b. +j0.1182 O c. -jo.1182 O d. +j0.182

Q: If a generator double-line-to-line fault occurs across "b" and "c" to ground, and Ea = 235 VZ0°, Z,…

A: In this question we need to find a sequence current , fault current and sequence voltage.

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: Draw the negative- and zero-sequence impedance networks for the power system shown below. Mark the…

A: In this question we need to draw negative sequence and zero sequence per unit impedance diagram of…

Q: A simple four-bus system gives the line admittances identified by the buses on which these…

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Q: Above is the one-line diagram of a simple power system. Each generator is represented by an emf…

A: The Given symmetric fault occurs 1 through a fault impedance Zi=j0.08 perunit. To determine the…

Q: Calculate the initial symmetrical short circuit current that will occur when a 3 phase short circuit…

A: We can re draw the given system as Let the base MVA of the system i.e SB 500MVA and base Voltage…

Q: EXAMPLE 9.1 Power-system sequence networks and their Thévenin equivalents A single-line diagram of…

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

A: The fault occurs at P. Transient reactance of the motor, Xm'(pu)=1.7*0.14              =0.238

Q: The LLLG fault occurs at bus-6 with pre-fault voltage as 1.05 p.u. If the positive sequence…

A: Given,  The pre-fault voltage at bus-6 is V6 = 1.05 pu Positive sequence impedance at bus-7 is Z7 =…

Q: The per unit bus impedance matrix for the power system network of Figure Q1 is given by; [0.240…

A: 1. Fault current Zf=j0.0225fault at Bus 2If2=VthZbb+ZfIf2=1Z22+Zfputting the value of Z22 from the…

Q: For the circuit shown, if a symmetrical three-phase fault occurs in node 2, determine a. The…

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Q: It is required to keep L-G fault current with zero fault impedance to rated line current. Determine…

A: Given:Z1=0.35p.uZ2=0.5p.uZ0=0.05p.uWe need  to find the value of reactance that need to be placed in…

Q: The zero sequence impedance offered by the equipment to flow of  .............equence currents.

A: For any equipment, The impedance offered by the system to the flow of zero sequence current is known…

Q: Q1/ for the four-bus power system shown in figure 1, the positive, negative and zero sequence…

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Q: There is no zero sequence component in line to line fault. Select one: O True O False

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Q: three phase generator with constant terminal voltages gives the following currents when under fault:…

A: The solution can be achieved as follows.

Q: Thévenin equivalent sequence networks looking into the faulted bus of a power system are given with…

A: Given that z1=0.15 z2=0.15 z0=0.2 Vf=1∠0° (a) For three phase balanced fault   Formula for fault…

Q: Problem 5: Thevenin equivalent sequence networks looking into the faulted bus of a power system are…

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Q: Q1. Given Z, = 0.3L60º, Z¡ = 0.17L80° and, Z2 = 0.45L120°. Compute the fault current and voltages…

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Q: Consider the multi-terminal line in the system shown below. Each of the buses C. D, G, H and J has a…

A: Consider the multi-terminal line in the system as shown below, Where, every one of the buses C, D,…

Q: Problem 5 Thevenin equivalent sequence networks looking into the faulted bus of a power system are…

A: Given parameters are: Z1=j0.15,Z2=j0.15,Zo=j0.2E1=1∠0°pu

Q: 5. The zero-, positive-, and negative-sequence bus impedance matrices for a three-bus power system…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: In the case of a three-phase symmetrical short circuit fault at the F1 point in the power system…

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Q: Q2/The positive-sequence reactances for the power system shown in Figure are in per unit on a common…

A: Current: It is the time rate of the change of the charges. It is also known as the flow of the…

Q: The figure below shows the one-line diagram of a simple three-bus power system with generation at…

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Q: V, =1.025Z0°pu P=300MW j0.05 Bus 1 Bus 3 V = 1.03 Slack j0.025 j0.025 Bus 2 400MW 200MVAR

A: The given power system can be redrawn as shown below:

Q: The one-line diagram of a simple power system is shown in the figure. The neutral of each generator…

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Q: 2) Draw equivalent diagram for this network with all per unit resistances and reactance near their…

A: The detection and diagnosis of faults in technical systems, particularly using a strategy in which…

Q: Give the comparison between bus admittance matrix and bus impedance matrix

A: The explanation of differences is as follows.

Q: FIGURE Q2 shows a four bus three phase power system. The generators, transformers and transmission…

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Q: A single-line diagram of a four-bus system is shown in fiugre. Equipment ratings and per-unit…

A: Given: A single-line diagram of a four-bus system is shown below: Machines 1 and 2: 100 MVA 20 kV;…

Q: The load flow data for a three-bus system is given below. Taking bus 1 as the slack bus, determine…

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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: A three-phase fault with a fault impedance Zf = jo.16 per unit occurs at bus 3 in the Figure beside,…

A: The solution is given below

Q: j0.2 For the following power system the impedance matrix is given below. Initially all bus voltages…

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Q: The LLLG fault occurs at bus-8with pre-fault voltage as 1.02 p.u. If the positive sequence impedance…

A: There are two types of faults in power system  1) Unsymmetrical fault  2)Symmetrical fault…

Q: A salient-pole generator without dampers is rated 20 MVA, 13.8 KV and has a direct-axis subtransient…

A:

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: Suppose V-1.0°p.u., z= j0.50 p.u., z z-jo.25 p.u.; draw a sequence network cannection in case of…

A: When there is no fault impedance present in between fault points then it is called bolted fault…

Q: what is bus impedance matrix ? how it is useful in symmetrical fault analysis?

A: Impedance bus matrix : Impedance bus matrix is a algorithm method to form a bus impedance matrix on…

Q: 5.2 Balanced Three-phase Fault Example 5.1 Determine the fault current, the bus voltages, and…

A: When all three lines are shorted to ground, this is known as a balanced (or three phase) fault. It…

Q: The synchronous generator in the figure is operating at rated MVA, 0.95 p.f. lagging and at 5% above…

A:

Q: Figure 5 shows a single-line diagram of a three-bus power system. Power flow input data are given in…

A: (a) we will find Y bus matrix YBUS  = Y11Y12Y13Y21Y22Y23Y31Y32Y33YBUS  =…

Q: The positive sequence reactance for the power system shown in Figure below are in per unit on a…

A: Given: The positive sequence reactance for the power system shown in the Figure below is per unit on…

Q: Q9: The reactance data for the power system shown in Figure below in per unit on a common base is as…

A: As per the guidelines of Bartley we supposed to answer first three subpart only for solution of…

Q: The bus impedance matrix of a 3-bus system is: [j0.2295 j0.1494 j0.1506] j0.1494 j0.1954 j0.1046…

A: We know that YBUS=[ZBUS]-1. So our YBUS is given as:…

Q: Figure 6.20 shows the one-line diagram of a simple three-bus power system with generation at bus 1.…

A: As per Bartleby policy we can answer only one question at a time. Please repost it for others.…

Q: The zero-, positive-, and negative-sequence bus impedance matrices for a three-bus three-phase power…

A: We are authorized to answer three subparts at a time. Since you have not mentioned which part you…

Q: The zero-sequence, positive-sequence and negative-sequence bus impedance matrices for a three bus…

A: Given data: Zbuso=j0.210.420.550.420.750.640.550.640.85 pu…

Q: A three-phase short circuit occurs at point P for the system shown in the following figure. (a)…

A: The most widely recognized kind of short out in a three-stage framework is a single conductor to…

Synchronous Motor

The synchronous motor is an AC electric type motor where at a steady-state the shaft rotation is synchronized with the supply current variable-frequency. To an integral number of AC cycles, the rotation period is exactly equal. The stator of the motor in the synchronous motor contains multi-phase AC electromagnets due to which a magnetic field is created that rotates in time with the oscillation of the line current. The rotor contains a permanent magnet and the rotor rotates in synchronization with the stator field at the same rate and provides the second synchronized magnetic field which is rotating in nature as a result. When the synchronous motor is supplied with independently excited multi-phase AC electromagnets on both the rotor and the stator, it is termed as a doubly-fed machine. The most widely used AC-type motors are the synchronous AC motor and the induction AC motors.