[V1]j0.2 jo.2 jo.2 j0.21 [j0.11V2jo. 2 jo.6 j0.2 jo.6 jo.1V3jo. 2 jo.2 j0.8 j0.2j0.2[v4]\jo. 2 jo.6 j0.2 j1.1] [jo.2]The Thevinin impedance seen between bus 2 and bus 3 is:Select one:O a. j0.8O b.j1O c. j0.2O d.j1.1O e. None of these

The Thevinin impedance seen between bus 2 and bus 3 is Z23.

Answered: [V1] j0.2 jo.2 j0.2 j0.21 [j0.11 V2 jo.…

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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consider the following diagram of impedances in per unit of a common base a) get the YBUS admittance array and the ZBuz impedance array 213-j2 pu zt2-j0.15 zg2-j1.85 791-j0.9 211-0.1 1 212-j0.5pu 223-j0.5pu Va 1 p.u. Jv1-1p.u. 22-10 pu
N-R
1. What is the ultimate objective of an interconnection? 2. What does it mean when the ACE of all areas in an interconnection is equal to ZERO? 3. Explain the difference between the ACE in a single-area power system and the ACE in two-area power system. 4. If there is a decrease in frequency of a two areas interconnection, but the net interchange power leaving balancing area 1 increases. This means: 5. If the monitoring system indicates a negative ACE, what does this means? 6. Briefly discuss the term Frequency Response. 2 2-1 LilAJ 11:06 PM 8/29/2021 A ENG
A DC Optimal Power Flow problem is to be solved for a 3-bus network. The per-unit reactances of the lines interconnecting the buses are as follows: X12 = 0.1pu, X13 = 0.12 pu and X23 = 0.2 pu. There is a generator at each bus. The loads at buses 1, 2 and 3 are 150MW, 200mw, and 100MWrespectively. Bus 1 is taken as the reference bus, and SBase = 100 MVA. Which one of the below is a constraint of the DCOPF problem? Select one: O a. None of these O b. -500 0₂-1000 03 = P3 - 110 O c. 1500 0₂-500 03 = P₂ - 220 O d. 1500 0₂-500 03 = P₂ - 200 O e. -500 0₂-1000 03 = P3 - 150 O f. -1500 8₁-1000 03 = P₁ - 150
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
The steady-state voltage drop between the load and the sending end of the line seen in (Figure 1) is excessive Suppose that V-4950/0° V (rms). A capacitor is placed in parallel with the 192 kVA load and is adjusted until the steady-state voltage at the sending end of the line has the same magnitude as the voltage at the load end, that is, 4950 V (rms). The 192 kVA load is operating at a power factor of 0.8 lag. Part A Calculate the size of the capacitor in microfarads if the circuit is operating at 60 Hz. In selecting the capacitance, use the value that results in the lowest possible power loss in the line. Express your answer in microfarads to three significant figures. ▸ View Available Hint(s) Figure 1 of 1 202 1100 192 kVA 0.8 lag ΜΕ ΑΣΦ. 11 vec C= 22.8 Submit Previous Answers Incorrect; Try Again; 5 attempts remaining Provide Feedback ? F
on DIS: (Answer these before coming to the experiment) Q1. Why sending end power is more than receiving end power in transmission? Explain Ref [1] reasons with necessary equations. Q2. For a give VR and I, the transmission line efficiency increases with the decrease in Ref [2] power factor for lagging loads. [True/False]? Q3. What is a peak load? How does it affect the power factor and Efficiency? Q4. The efficiency of DC transmission is more than AC transmission. Why? Q5. How Ferranti effect changes the transmission line efficiency? Explain. Ref [2] Ref [3] Ref [3]
Most buses in a typical power-flow program are a.voltage controlled bus b.PQ bus c.PV bus d.Slack bus 2-The power-flow problem is the computation of voltage magnitude and phase angle at each bus in a power system under balanced three-phase steady-state conditions. False True 3-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 4- he 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 i uploded the houndots (book )here :https://seomidea.com/hct/nu.pdf
If a 3-phase short circuit occurs in one of the two circuit of transmission line at point F, and the shunt impedance of the short circuit is j0.1 pu. Determine the maximum time when a short circuit can still be cleared. So=0.8+j0.3 Xd'= 0.2, XL1=XL2= 0.6, XT1=0.12, Xr2= 0.1, L1 V= 1.0 T1 L2 F T2 .XL= 0.1 Хс- 0.1. S1 S2 SL= 0.6+j0.3
A system consists of four idenital 400 MVA generating units feed- ing a total load of 1016 MW. The intertia constant of each unit is 5 on 400 MVA base. The load changes by 1.5% for a 1% change in frequency. When there is sudden drop in load by 16 MW, obtain the power system time constant (T) with constants H and D expressed on 1600 MVA base.
Figure 9.17 shows a 3-bus system. The series impedance and shunt admittance of each line are 0.026 + j0. 11 pu and j0.04 pu respectively. The bus specification and power input, etc., at the buses is as under: Вus PG Pi Bus voltage unspecified unspecified 1.03 +j0 (Slack bus) V = 1.03 (PV bus) unspecified (PQ bus) 1 unspecified 1.0 0.5 1.5 3 1.2 0.5 For bus 2 the minimum and maximum reactive 1.5+JQG2 power limits are 0 and 0.8pu. (a) Form [Ypus] (b) Find P2°, Q2°, P3º, Q3°. (c) Find [ J°] (d). Form the general equation for calculating the changes in variables by NR method. Write the equation for first iteration. 2 PV 1 +j0.5 bus Slack bus PQ bus 3 1.2 +j0.5

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[V1] j0.2 jo.2 j0.2 j0.21 [j0.11 V2 jo. 2 jo.6 j0.2 jo.6 jo.1 V3 jo. 2 jo.2 jo.8 j0.2jo.2 [v4] \jo. 2 jo.6 j0.2 j1.1] [jo.2] The Thevinin impedance seen between bus 2 and bus 3 is: Select one: O a. j0.8 O b.j1 O c. j0.2 O d.j1.1 O e. None of these II