Q4: Draw the single line diagram of a substation having the following equipments:i) Incoming lines: Two, 400kVii) Outgoing lines: (a) four, 400kV (b) four, 33kViii) Transformers: (a) One, 100MVA, 400/132KV, D/Y (b) One, 20MVA, 132kV/33 D/Y11,One, MVA, 33KV/420V,Y/Yiv) Bus-bars: 400 kV-Duplicate bus-bar, 11kV single bus-bar, 33kV single bus-barShow the positions of necessary equipments that using for protections, measurements andcommunications.

The single line diagram is the basic set of diagrams that is where we show the electrical…

Answered: Q4: Draw the single line diagram of a…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Electrical Engineering Design a power system network consists of the following: į, 2 generators ii. 2 transformers iii. 2 transmission lines iv. Suitable number of busbars Then, for the designed network, perform the following: j. Load flow analysis. You must clearly identify the bus type to perform this. ii. Fault analysis – Balanced and unbalanced faults Next, perform manual calculations for the following: i, Load flow analysis using either Gauss Seidel or Newton Raphson Method. ii. Fault analysis (balanced and unbalanced faults) on any one fault point.
The fault current level of a circuit breaker used in a transmission line with phase voltage 2.2 kV and breaking capacity 60 MVA is ......................kA. Complete the answer.
Q2: Draw the single line diagram of a substation having the following equipments:(1) Incoming lines: Two, 400kV(2) Outgoing lines: (a) Two 400kV, (b) four, 132kV (C) Three, 33kV(3) Transformers: (a) Two 250MVA, 400/123KV D/Y11 (b) One, 25MVA, 132/33kV,D/Y11 (C) One, 2MVA, 33kV/ 420V,Y/Y(4) Bus-bars: 400KV Duplicate bus-bar, 132 kV-Duplicate bus-bar, 33kV single bus-bar,0.42KV single bus-barShow the positions of necessary equipments that using for protections, measurements andcommunications.
Please neglect the simulation
A 4-bus three-phase power system consists of the following equipment: • Generator 1 connected to bus 1 with a rated power of 20MVA, rated voltage of 20 kV, and a series reactance of 0.4 p.u. • Generator 2 connected to bus 5, with a rated power of 12MVA, rated voltage of 10 kV, and a series reactance of 0.3 p.u. Transformer 1 connected between buses 1 and 2, is wye-wye connected with a rated power of 20 MVA, rated voltages 20/100 kV, and a series reactance of 0.1 p.u. • Transformer 2 connected between buses 4 and 5, is wye-wye connected with a rated power of 12 MVA, rated voltages 12/110 kV, and a series reactance of 0.15 p.u. • Transmission Line 2-3 connects buses 2 and 3 and had a series impedance of 50 + j75 ohms. • Transmission Line 3-4 connects buses 3 and 4 and had a series impedance of 40 + j80 ohms. • Load A connected to bus 3 and abosorbes20 MW and 10 MVAR. The voltage at bus 3 is 105 kV. 1) Draw the one-line diagram for the system. 2) Draw the per-unit, per phase…
Figure below shows the single-line diagram of three-bus power system with generation at bus 1 and bus 3. The voltage at bus 1 is V₁ = 1.025/0° per unit. The voltage magnitude at bus 3 is fixed at 1.05 per unit with a real power generation of 250 MW. The scheduled load on bus 2 is marked on the diagram. Line impedances are marked in per unit on a 100 MVA base. Line resistances and line charging susceptances are neglected. By using Gauss-Seidel method and initial estimates of V₂(0) = 1.020° and V3(0) = 1.0520°, determine V₂ and V3. Perform calculation for one iteration. V₁ = 1.025/0° j0.1 Slack Bus j0.2 j0.4 j0.2 3 j0.1 250 MW 150 Mvar |V3|=1.05 P3 = 250 MW
Q2\ The one-line diagram of a simple power system is shown in figure below. All impedances are expressed in per unit (pu) on a common MVA base. All resistances and shunt capacitances are neglected. The generators are operating on no load at their rated voltage. A three-phase fault occurs at bus 1 through a fault impedance of Zf = j0.08 per unit. Using Thevenin's theorem obtain the impedance to the point of fault and the fault current in per unit. Determine the bus voltages and line currents of generators during fault. X₁ = = 0.1 XT-0.1 3 1 to ojo XL=0.2 2 040 X₁ = 0.1
Consider the system shown in the single-line diagram of Figure (3). All reactances are shown in per unit to the same base. Assume that the voltage at both sources is 1 p.u. a Find the fault current due to a bolted- three-phase short circuit at bus 3 b- Find the fault current supplied by each generator and the voltage at each of the buses 1 and 2 under fault conditions 0.06 p.u. 0.2 p.u. 0.04 p.u. 0.25 p.u. 0.2 p.u. 0.2 p.. 0.2 p.u. 0.06 p.u. 0.25 p.u. Figure (3) Single-line diagram ele ver ele 888 ele 0.06 p.u. 0.25 p.u.
Refer to the 5-bus data given below. Sbase = 400 MVA, the base voltage is 15.0 kV for buses 1 and 3, and 345 kV for buses 2, 4, 5. Note that 1-5 and 3-4 are 15/345 kV transformers.a) Draw a one-line diagram of the power system.b) Find the elements Y23, Y43, Y11 Y33 of the system bus admittance matrix.
The system values are given below. The bus 1 voltage after fault = 1.5 p.u The bus 2 voltage after fault = 1.2 p.u The line admittance between bus 1 and bus 2 (Y12 ) is = 0.8 p.u The post fault current current flow between bus 1 and 2 is ..............
Q2: Draw the single line diagram of a substation having the following equipments: (1) Incoming lines: Two, 400kV (2) Outgoing lines: (a) Two 400kV, (b) four, 132kV (C) Three, 33kV (3) Transformers: (a) Two 250MVA, 400/123KV D/Y11 (b) One, 25MVA, 132/33kV, D/Y11 (C) One, 2MVA, 33kV/ 420V,Y/Y (4) Bus-bars: 400KV Duplicate bus-bar, 132 kV- Duplicate bus-bar, 33kV single bus-bar, 0.42KV single bus-bar Show the positions of necessary equipments that using for protections, measurements and communications.
In the shown below power system, both generators G1 and G2 emf’s are equal.All the system data are shown on the system diagram.a) Draw the system diagram in per unit using (MVA)base = 75 and (KV)base =20 KV in the generators side.b) Calculate the three-phase balanced short circuit current (If) at busbar 3 inAmpere and the fault level (MVA)sc in MVA.c) If the fault at busbar 3 is a line-to-line fault, calculate the fault current inAmpere and the fault level (MVA)sc in MVA.

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