4. For the three-phase system shown below, draw an impedance diagram expressing all impedances in per unit on a common base of 20 MVA, 2600 V on the HV side of the transformer. Using this impedance diagram, find the HV and LV currents.

4. For the three-phase system shown below, draw an impedance diagram expressing all impedances in per unit on a common base of 20 MVA, 2600 V on the HV side of the transformer. Using this impedance diagram, find the HV and LV currents.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.26P: A bank of three single-phase transformers, each rated 30MVA,38.1/3.81kV, are connected in Y- with a...

See similar textbooks

Related questions

Q: Create the truth table for the following function. From the truth table you obtained. Using the…

A: Given Data:An POS expression of,To Find:Truth table and The corresponding POS expression by K-Map

Q: Vin lx W 302 ly 202 3*ly 4V 10

A: given here a circuit and asked to find the currents.

Q: QUESTION 3 An N-channel JFET self-bias amplifier circuit as shown in Figure 3 has a voltage supply…

Q: Example-7.18 If the fault current is 2000 amps, the relay setting 50% and the CT ratio is 400/5,…

A: It is given that:

Q: Using error propagation, the uncertainty on Vose is given by Vosc ¿Vose JVpp opp Using error…

A: to prove the given expressions that are…

Q: 1/4 of a circle of radius R carrying current i is given in the figure. What is the magnetic field at…

Q: All voltage sources contain internal resistance which is usually ignored in calculations because the…

Q: 2. Determine the average ac resistance for the diode of Fig. 1.15 for the region between 0.6 V and…

A: In this questionWe need to determine the average ac resistance for the diode. We know Ac resistance…

Q: ½ deflection b. 1/2 deflection a. % deflection full deflection فن Needle Deflection C. d. FOR ac…

A: Aim:To determine voltages for different needle deflections, for different ranges of voltmeter as…

Q: An RC high-pass filter having the purpose is to attenuate lower frequencies while allowing higher…

A: For a RC High Pass FilterVrms = 1.1 V f = 1010 HzR = 110 OhmC= 0.51 μF.Her we have to finda) The…

Q: A 3 phase, 460 V, 1740 rpm, 60 HZ, 4-pole, Y-Connected wound rotor induction Motor has, R₁=0.25~₁…

Q: Consider the following statements with reference to PCM and DPCM systems having same sampling…

A: Consider the following statements with reference to PCM and DPCM systems having the same sampling…

Q: B. Find, graphically. y(t) = f(t) * h(t) where h(t) = 8(t)- 8(t-1) and f(t) is the signal shown in…

Q: Given the following circuit where V,= 17 V, IT = 3.08 mA, R₂ = 15 kQ and R3 = 17 k0, find 1₁. Vs www…

A: given circuit is voltage source is VS = 17 Vtotal current IT = 3.08…

Q: Determine the inductor current i(t) for t20. Given that Vs1 =9V, Vs2 = 12V, L= 120mH, R₁ = 2.29, R₂…

Q: 1. Use time differentiation property to find the Fourier transform F(o) of the following signal.…

Q: 1.Determine all the resistor values in figure below. R₁ = 77322. Vs 15.53 mA E R₁ 3.64 mA R₂ 6.67 mA…

Q: In the circuit in the figure, the amplitude of the input current is 5 Amps and its phase is 0…

A: For the given circuit the value of the unknown voltage V needs to be calculated and the same can be…

Q: A Frequency Modulation (FM) waveform x(t) is described by the following equation: x(t) = 10 cos (27…

A: It is given that:

Q: Calculate the input impedance for the circuit shown in figure. Assume λ = 0. Şekildeki devre için…

A: For the given circuit the value of input impedance needs to be calculated and the same can be…

Q: 6 Find io in the following ideal op-amp. 10 ΚΩ 1V| 2V(+ Bizne 100 ΚΩ 10 ΚΩ + 4.7 ΚΩ Vo

A: In this questionWe need to determine the current io as shown the circuit. We are solving this…

Q: Get the fourier transform of t/(t^2+9), and show the work needed to get there.

A: Let's go through the step-by-step procedure to find the Fourier transform of the function using the…

Q: Question No. 2: Part (a): Apply and analyze Routh-Hurwitz stability on the transfer function in eq.…

A: Since you have posted multiple question, we will provide solution to first question only as per…

Q: Plot the transfer function below: Vout(s) 25000000 = Vin (s) s² +3750s + 25000000

A: To plot the transfer function, we need to determine the behavior of the system as the frequency…

Q: 25. A synchronous generator is connected to an infinite bus with excitation voltage E, = 1.3 pu. The…

A: It is given that:

Q: An LC circuit like the one in the Figure contains an 25.1-mH inductor and a 224-µF capacitor that…

Q: Calculate the voltage gain of the following circuit. Assume that the capacitors are very large and λ…

A: Given :Find :Here Determine Voltage gain for given circuit.

Q: Question) x [n] and y [n] two discrete time signals of length 4, which are shown in fique Are those…

A: Given:Two discrete time signals x[n] and y[n] as, To find:Whether the given signals are orthogonal…

Q: c) The PNP transistor in the circuit shown has ß-200, saturation mode VECsat = 0.15V and VEB 0.7V.…

Q: In Fig. 108, three capacitors C1=2 uF, C2=4 µF and C3=6 µF, initially connected in parallel are…

A: Charge store in capacitorQ= CV.Here Q_chargeC_capacitanceV_voltage

Q: 7. Using the superposition method, calculate the current through R5 in Figure 72.

A: In this questionWe need to determine the current in the resistance R5 using the super position…

Q: Vp TR1 Vs VM Sin wt TRANSIFORMER TH 1 THYRISTOR Fig 1A LOAD RESISTOR Voutput RL

Q: Given a 76sqm residential unit to be provided with 230V, single phase power supply with the ff…

A: It refers to the total amount of electrical power required by all the devices and appliances…

Q: 4. For the block diagram shown below: a) Draw the frequency spectrum of the output signal of: a.2)…

A: According to the question, for the given diagram of the communication system as shown belowWe need…

Q: Q6 Obtain the Laplace Transform of the following differential equation given that at time = 0, y =…

Q: Problem 5.12 Two infinitely long, parallel wires are carrying 6-A currents in opposite directions.…

A: It is given that:

Q: A 2MVA, 3-phase transformer, 33/11-kV, Y/Y, has a copper loss of 6 kW. The impedance drop at…

Q: Problem 7. Consider the following DT system. z-1 H(z) z +0.8 (a) Compute the values of H(z) at zw…

Q: a с с C Zc c sc с b

A: We need to find equivalent capacitance between a and b terminal

Q: 2. Consider a discrete-time LTI system described by the following time-domain relationship, where…

A: The given LTI system is:

Q: A microprocessor is wired into a sensing control circuit so that the memory locations 80 and 81 each…

A: Aim:To write an assembly code for a microprocessor using MOV, JMP, and JNZ instructions, such that…

Q: In the figure below, apply Millman's theorem to solve for the voltage, Vxv. Show Work! 100 V R1 = 5…

A: The above question is based on Millman's theorem. It is based on the principle of replacing multiple…

Q: An RLC series circuit has a voltage source given by E(t) = 10 V, a resistor of 100 S2, an inductor…

Q: A three-phase transposed transmission line is as shown in the fig. Q3(A). It has 2 bundles per…

A: To calculate the per-phase inductance of the three-phase transposed transmission line, we can use…

Q: Using Mason's gain formula, find the transfer function Y/R₁. -Q G₁ G4 R3 G₂ +. G5 R₂ + Y

A: Given Data:A block diagram of a multiple Input and Single output system with,Inputs,, and.Output =…

Q: Design a series RLC type band-pass filter with cutoff frequencies of 10 kHz and 11 kHz. Assuming C=…

A: It is given that:

Q: 8 15 I 20 16 16 20 V₂ Find TRANSFER Function T(W)

A: In this questionWe need to determine the transfer function. We are solving this problem using the s…

Q: Problem 5. Consider the transfer function S-2 H(s) = (a) (b) (s² +s+100.25) Compute H(jw) (magnitude…

A: The above question is based on the frequency response of a system.

Q: Convert the binary number (1011101) to its equivalent decimal and BCD values. (Show you work)

A: According to the bartleby policy, we can give answer only first question.Please provide another…

Q: Find VTH, RTH and the load current flowing through and load voltage across the load resistor in fig…

A: It is given that:

Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

4. For the three-phase system shown below, draw an impedance diagram expressing all impedances in per
unit on a common base of 20 MVA, 2600 V on the HV side of the transformer. Using this impedance
diagram, find the HV and LV currents.
38 Cable
Volts 737 (0.4+0.6)
Johms
2600
A Con.
LOAD
15 KVA
3000/230 V
Z= 10.06 pu
(50+|120)
olms

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Given Information

VIEW

Step 2: Determination of impedance of transformer at 20 MVA, 2600 V

VIEW

Step 3: Determination of impedance of a cable at 20 MVA , 242.67 V

VIEW

Step 4: Determination of impedance of a load at 20 MVA, 242.67 V

VIEW

Step 5: Determination of impedance diagram and per unit diagram

VIEW

Step 6: Determination of currents

VIEW

Solution

VIEW

Step by step

Solved in 7 steps with 11 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

In per-unit equivalent circuits of practical three-phase transformers, under balanced thr-phase operation, in which of the following connect ions would a phase-shifting transformer come up? (a) Y-Y (b) Y- (c) -
(a) An ideal single-phase two-winding transformer with turns ratio at=N1/N2 is connected with a series impedance Z2 across winding 2. If one wants to replace Z2, with a series impedance Z1 across winding 1 and keep the terminal behavior of the two circuits to be identical, find Z1 in terms of Z2. (b) Would the above result be true if instead of a series impedance there is a shunt impedance? (c) Can one refer a ladder network on the secondary (2) side to the primary (1) side simply by multiplying every impedance byat2 ?
The ratings of a three-phase three-winding transformer are Primary(1): Y connected 66kV,15MVA Secondary (2): Y connected, 13.2kV,10MVA Tertiary (3): A connected, 2.3kV,5MVA Neglecting winding resistances and exciting current, the per-unit leakage reactances are X12=0.08 on a 15-MVA,66-kV base X13=0.10 on a 15-MVA,66-kV base X23=0.09 on a 10-MVA,13.2-kV base (a) Determine the per-unit reactances X1,X2,X3 of the equivalent circuit on a 15-MVA,66-kV base at the primary terminals. (b) Purely resistive loads of 7.5 MW at 13.2 kV and 5 MW at 2.3kV are connected to the secondary and tertiary sides of the transformer, respectively. Draw the per- unit impedance diagram, showing the per-unit impedances on a 15-MVA,66-kV base at the primary terminals.
A bank of three single-phase transformers, each rated 30MVA,38.1/3.81kV, are connected in Y- with a balanced load of three 1, Y-connected resistors. Choosing a base of 90MVA,66kV for the high-voltage side of the three-phase transformer. spify the base for the low-voltage side. Compute the per-unit resistance of the load on the base for the low-voltage side. Also, determine the load resistance in ohms referred to the high-voltage side and the per-unit value on the chosen base.
A 50 Hz, Scott connected transformer supplies an unbalanced two phase load at ( 400 V) per phase. For the leading phase the load has a resistance of (13.3 ohm) and capacitor of (318) micro farad in series. For the other phase the load consists of resistance (10) ohm and an inductance of (42.3) mH. Calculate both mathematically and graphically the lines currents on 3 phase side. The main transformer primary to secondary turns ratio is (12/1).
The p.u. impedance value of an alternator corresponding to base values of 13.2 kV and 30 MVA is 0.2 p.u. Then the p.u. impedance value of an alternator for the new base values of 13.8 kV and 50 MVA is......
Two 100-kW, single-phase transformers are connected in parallel both on the primary and secondary. One transformer has an ohmic drop of 0.5% at full-load and an inductive drop of 8% at full-load current. The other has an ohmic drop of 0.75% and an inductive drop of 2%. Show how they will share a load of 180 kW at 0.9 p.f.
QUESTION 12 A single phase 600v/120v transformer has a load of 30 ohms resistive and 20 ohms inductive in series. what is the load power factor? O O O O O .91 O .39 .83 .42
3. A non-ideal 1-phase transformer has turns ratio 5:1 with 120Vac primary. The primary impedance is 1 + j1 Ohms, and the secondary impedance is 0.2 + j0.2 Ohms. Assume the core impedance (R0 and X0) can be neglected. A resistive load of 12 Ohms is connected to the secondary. What is the primary current magnitude? What is the secondary voltage magnitude? What is the efficiency of this transformer with this load?
1-A single-phase power system is shown in Figure below. The power source feeds a 100- kVA 14/2.4-kV transformer through a feeder impedance of 40.0 + j150 &. The transformer's equivalent series impedance referred to its low-voltage side is 0.12 + j0.5 &. The load on the transformer is 90 kW at 0.80 PF lagging and 2300 V. 40n j150n 0.12n j0.5n Load 90 kW 0.85 PF lagging source Source Feeder Transformer Load (transmission line) (a) What is the voltage at the power source of the system? (b) What is the power losses in the feeder?
A 480V/240V, 60Hz single transformer has Z1 = 0.1+j0.22 ohms and Z2 = 0.035 + j0.12 ohm. Find the equivalent impedance in ohm referred to the secondary. Group of answer choices 0.07+j0.135 0.06+j0.175 0.04+j0.135 0.06+j0.135
6.5% ans ex A so kvA. 2o00/20 V, So He single-phase transformar has impedance drof of8% and resistance drop of 4%. Caleulate. The Requlation of the Thams former at full- Load o8 P.s Legging. also find The Power factor at which Voltage requlation will Be Zero. Sols 0.5 leading. s alculate The % Noltege Requlation af atransformar in w hich the Percantage resistance drof is 1% and Percentage dre is 6% when The Power fador is 0.8 lagging ) > unity aMS 38 % ans 1 % (シ→ 0.8 leading . amS - 2.2%