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Draw the zero, positive, and negative - sequence reactance diagrams.
A is positive negative or zero? R is positive negative or zero? S is positive negative or zero? Chapter 3, Section 3.2, Question 017-018 For the function f (x) = a(x-r)(x-s) graphed below, state whether the constants a, r, and s are positive, negative, or zero. (Assume r S s.) a is r is
Please help me to develop an impedence bus matrix of zero sequence, positive sequence and negative sequence network. thectical Protection IV Assignment: Part 2 Submission: 11 September 2019. Time: 17:15 a lecture Venue The ingle-line diagram of a three-phase power system is shown in Figure 1. All the impedances have been reduced to como base, as indicated in Table 1 to 3 The inductor connected to Generator 3 neutral has a reactance of 6.085 per unit the common hue. Determine...
For the system shown in Fig. P4.5 set up the positive, negative, and zero sequence networks in per unit on a 30-MVA base. As suming no load, reduce the three networks to equivalent single circuits, as shown in Fig. 4.13 for a fault at bus H. (This problem is continued in Problems 6.2, 6.3, and 7.4.) 7 GEN. 324.5 kV Line X = X 6A GEN 30 NVA 30 MVA 13.8 kV 13.8:34.5 kV X, X, 125 X = 68...
The positive, negative and zero sequence bus impedance and admittance matrices of a system are given as follows:\(Z^{+}=Z^{-}=j\left[\begin{array}{ccc}0.14 & 0.11 & 0.125 \\ 0.11 & 0.14 & 0.125 \\ 0.125 & 0.125 & 0.175\end{array}\right] \quad Y^{+}=Y^{-}=j\left[\begin{array}{ccc}-24 & 10 & 10 \\ 10 & -24 & 10 \\ 10 & 10 & -20\end{array}\right]\)\(Z^{0}=j\left[\begin{array}{ccc}0.10 & 0.10 & 0.10 \\ 0.10 & 0.30 & 0.20 \\ 0.10 & 0.20 & 0.30\end{array}\right] \quad Y^{0}=j\left[\begin{array}{ccc}-16.66 & 3.33 & 3.33 \\ 3.33 & -6.66 & 3.33...
Q2. (a) For the following system, please draw the complete positive-sequence, negative-sequence and zero-sequence network connection (phase A) for the double line-to-ground faults (phases B and C to ground faults) at bus M. XP XLu Eaz EGs Figure Q2. (b) For double line-to-ground faults at point M, please find the positive-sequence cuurent of phase A. The parameters are as follows: Prefault voltage Egi-120, Ea-10 E-10 (Per Unit) Parameters (Per Unit): Generators: Xa-X,-X,o = 0.2 , Xa,' = X,-= XG2-0.2 Transformers....
The zero-, positive-, and negative-sequence bus impedance matrices for a three bus power system are given below 5. T0.10 0.15 0.121 Bu0.15 0.10 0.08 pu [0.16 0.10 0.15] Lo.15 0.14 0.30 0.12 0.08 0.35 ZBus ZBus0.10 0.20 0.14 pu Determine the per unit fault current and the bus voltages during fault for (a) A bolted three-phase fault at bus 2. (b) A bolted single line-to-ground fault at bus 2. (c) A bolted line-to-line fault at bus 2 (d) A bolted...
B. negative. C. zero. D. positive then negative. E. negative then positive. 16. A common statistic in car tests is the standing (starting from rest) quarter-mile performance. A modern sports car can achieve a terminal speed (speed at the end of the quarter-mile) of 120 mph (193 km/h). How does the average acceleration compare to g? (0.25 mile 402 m) A. 0.36 g B. 2.8 g C. 0.067 g D. 3.57g E. 0.73 g
QUESTION 3. (a) The positive-, negative- and zero-sequence reactances of a 20-MVA, 13.2-LV synchronous generator are 0.3 pu, 0.2 pu and 0.1 pu, respectively. The generator is solidly grounded and is not loaded. A line-to-ground fault occurs on phase a. Neglecting all the resistances, determine the fault current. Assume V, = 120° pu. (b) Explain why a bolted single-line-to-ground fault at the sending end of a transmission line might be higher than the bolted three-phase short circuit on the same...
The positive, negative and zero-sequence reactances of a 20-MVA, 13.2 kV synchronous generator are 0.3 pu, 0.2 pu, and 0.1 pu respectively. The generator is solidly grounded and is not loaded. If a double line-to-ground fault occurs at the generator terminals, calculate: (i) The fault current (ii) The line voltages (iii) Explain the steps that was carried out in the sequence voltage changes at all buses of the system. (Do include explanations and analysis of your solutions such as use...
1. For the following three-phase network, draw the positive sequence diagram and the zero sequence diagram. Choose a system base of 120 MVA, 154 KV in the L1 portion of the system. Next, find the thevenin impedance at Bus A (in pu) for both the positive sequence and zero sequence diagrams G 1: 1 3.2KV, 80 MVA, XI-X2-9%, X0-6%, xn-4% on gen rating T1: 1 3.8KV delta/161 KV Wye, 60 MVA, X-9% T1 Bus A L1 G1 Xn 1. For...