A 138-kV, three-phase short transmission line has a per-phase impedance of (2 + 14) 2. If the line supplies a 25-MW load at 0.8 power factor lagging, calculate the sending-end voltage in kV. 139.8 137.9 139.5 138.6

A 138-kV, three-phase short transmission line has a per-phase impedance of (2 + 14) 2. If the line supplies a 25-MW load at 0.8 power factor lagging, calculate the sending-end voltage in kV. 139.8 137.9 139.5 138.6

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 3.48P: With the same transformer banks as in Problem 3.47, Figure 3.41 shows the oneline diagram of a...

See similar textbooks

Related questions

Q: I) Determining the voltage amplitude and angle values of each busbar II) To determine the…

A: In the transmission line, the voltage amplitude and the phase angle are determined at each bus-bar.…

Q: Look at the circuit in Figure 1 and determine the following: (a) Total Admittance. (b) Total…

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

Q: 1. What are the applications for stripline and microstrip transmission lines? 2. Give 2 examples of…

A: 1. Applications of Stripline and Microstrip Transmission Lines: - Stripline: Stripline transmission…

Q: a) The Newmont Mining Company at Ahafo in the Bono region of Ghana requested a dedicated power…

A: Given :V=138 kVY=0.001∠90° SZ=95∠78°ΩP=49 MWcos θ=0.85L=120 km

Q: A three phase symmetrical double circuit line is arranged in a horizontal plane as shown in figure…

A: expression for the transposed line for the inductance. Given line is double circuit. Assume…

Q: Discuss why a. Complex power in an AC circuit is more than the DC resistance. b. Receiving end…

A: Only first three subparts are only to be answered. Kindly repost the part d. a. Question is why…

Q: High Voltage level in Transmission system ensures ………………… a. High current in Overhead conductors b.…

A: The primary reason to use the high voltage level in the transmission to increase the efficiency.…

Q: 2- i. Answer the questions considering Turkish electricity system. Single phase voltage in…

A: GIVEN DATA:

Q: Problem #1 An overhead line has span of 260m. The tension in the line is 1200kg while the conductor…

A: Span, l= 260m Tension, T=1200kg Weight per unit length of the conductor, w=6501000=0.65kg/m

Q: The per-unit impedance of a system is 0.7 pu. The base KVA is 300 kVA, and the base voltage is 11…

Q: Q3: A synchronous generator with peak generated voltage Vg which is connected to a lighting arrester…

A: Equivalent per phase diagram Apply KVL in loop 1)

Q: State the relation between line and phase values of voltage and current for 3-pha se DELTA connected…

Q: The 13.2 kV 50-Hz generator feeds a load over a line with (Zload) impedance Zline. Load is 80on +…

A: Given: A 13.2 kV, 50 Hz single-phase generator supplies power to a load through a transmission line.…

Q: In the above figure, a single line model of a three-phase power system is given. Base power 50MVA,…

Q: (b) Given the two-machine system of Figure Q2 (b), a base voltage of 132 kV for the transmission…

Q: Figure Q2 (a) shows the spacing of a double circuit 3-phase overhead line. The phase sequence is RYB…

A: 1) Significance of transposition of conductors When line is not transposed, There will be unequal…

Q: a) The Newmont Mining Company at Ahafo in the Bono region of Ghana requested a dedicated power…

A: Solution (a) - Given,V=13.8 kVZ=95∠78° ΩY=0.01∠90.5° P=49MWcosθ=0.85L=120 km

Q: An overhead line has span of 260m. The tension in the line is 1200kg while the conductor weighs 650…

A: As we have given : L=260 mT=1200 kgw=650 kgh=13 m

Q: The VSWR on an 50-Ohm transmission line is 5. The distance between successive voltage minima is 80…

Q: What are FACTS (Flexible Alternating Current Transmission Systems) devices, and how do they enhance…

A: Flexible AC Transmission Systems (FACTS) devices are a family of power electronics-based devices and…

Q: 1. FIGURE 52 shows the one-line diagram of a simple three-bus power system with generation at bus I.…

A: Convert the line impedances into admittances, using Y=1/Z

Q: Consider the 500 kV, three phase bundled conductor line as shown in the figure below. Find the line…

Q: . What's the primary instrument for locating a break in a cable during emergency maintenance? A. OSA…

A: In this question we need to choose a correct option

Q: Q2. Figure Q2 shows the single-line diagram. The scheduled loads at buses 2 and 3 are as marked on…

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

Q: 20cn) 10c2) Nodal strees Method. 50(0) 10c0) 50C 80 (A) 3 20c2) 30c2) 5CA) 5CA) 10(A) 20c2) 3 CA)

Q: 1. A single-phase power system as shown in Figure 1 consists of a 240 V, 60 Hz generator supplying a…

Q: No-load operation and short circuit tests were performed on three-phase, 50 Hz 480/220 delta / Y…

A: Giveen : No load Test Violtgae =480vCurrent =0.71 A Power =114 w Short circuit test : COltage = 10…

Q: Which termination would result to a phase change of 180 degrees at the load if Zo = 100 ohm? a. 50…

A: It is given that: Zo=100 Ω

Q: Q3: A synchronous generator with peak generated voltage Vg which is connected to a lighting arrester…

A: 1) Peak value of the generated voltage of the synchronous generator= Vg RMS value of the generated…

Q: The figure below shows the one-line diagram of a four- bus power system. The voltages, the scheduled…

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

Q: In a 3-phase overhead system, each line is suspended by a string of 3 insulators. The voltage across…

A: Given three phase overhead system , each line is suspended by a string of 3 insulators The voltage…

Q: Problem 1 Explain the meaning of the term "bundle conductor transmission line" and discuss the…

A: Part (a) - Introduction - In some transmission lines, despite of a single conductor per phase,…

Q: Question 1) A 154 kV transmission line has a length of 100 km. The line and the conductors are given…

Q: Q3: The shunt admittance of a transmission line is 3 microsiemens. Its complex notation will be .…

A: (3) Given, Shunt admittance of transmission line is 3 uS In complex form, Y = 3*10(-6) with angle…

Q: A 3-phase overhead transmission line is being supported by three disc insulators. The potentials…

A: Given:-potential across top unit =9kv=v1potential across middle unit=11kv=v2& there are 3 disc…

Q: H. W.: A 3-phase overhead transmission line is being supported by three disc insulators. The…

A: Given, Number of insulator disc (n)=3 Voltage across the top unit (V1)= 9 kV Voltage across the…

Question

TOPIC: Transmission Lines, Power Systems, and Powerplants:

INSTRUCTIONS:
- Answer in this format: Given, Illustration, Required Conversion, Solution, Final Answer.
- Step-by-step solution, do not skip even simple calculations to avoid confusion.
- If answered in written form, make sure it is readable.

PROBLEM:
A 138-kV, three-phase short transmission line has a per-phase impedance of (2 + 14) 2. If the line supplies a 25-MW load at 0.8 power factor lagging, calculate the sending-end voltage in kV.

139.8
137.9
139.5
138.6

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

please help me only the solve part (d) and part (e) thank you
Please provide Handwritten answer
please help me all options is solve step by step thank you
Consider the 500 kV, three phase bundled conductor line as shown in the figure below. Find the line to neutral capacitance. 0.5 m 30 mm (0) (O to Ine 15 m 15 m
The first question has been solved. Qii?
Which termination would result to a phase change of 180 degrees at the load if Zo = 100 ohm? a. 50 ohm b. short circuit c. 75 ohm d. all of these What is the purpose of impedance matching? a. maximum return loss b. maximum SWR c. maximum load power d. maximum reflection A short piece of transmission line that may be open or shorted and used for impedance matching purposes. a. converter b. decoder c. stub d. transformer
1. FIGURE 52 shows the one-line diagram of a simple three-bus power system with generation at bus I. The voltage at bus l is V1 = 1.0L0° per unit. The scheduled loads on buses 2 and 3 are marked on the diagram. Line impedances are marked in per unit on a 100 MVA base. For the purpose of hand calculations, line resistances and line charging susceptances are neglected a) Using Gauss-Seidel method and initial estimates of Va 0)-1.0+)0 and V o)- ( 1.0 +j0, determine V2 and V3. Perform two iterations (b) If after several iterations the bus voltages converge to V20.90-j0.10 pu 0.95-70.05 pu determine the line flows and line losses and the slack bus real and reactive power. 2 400 MW 320 Mvar Slack 0.0125 0.05 300 MW 270 Mvar FIGURE 52
2- i. Answer the questions considering Turkish electricity system. Single phase voltage in residential customers: Three phase voltage in industrial facilities: Transmission line voltage levels: Frequency: Total installed capacity of Turkey in March 2021: Total length of transmission line of Turkey in 202o: volt volt kv, kV, kV, kV Hz MW km ii. What can be the disadvantages if we see 15 volts on the neutral wire? ili. What happens if we have no ground wire in our houses? Iv. What is the difference between installed power and demand power?
Discuss why a. Complex power in an AC circuit is more than the DC resistance. b. Receiving end voltage of an unloaded long line may be more than sending end voltage. c. Inductance of the three phase of a transmission line are generally not equal. d. It is necessary to use the geometric means radius in the formula for the inductance calculation whereas the formula for the capacitance calculation uses the actual radius.
TOPIC: Transmission Lines, Power Systems, and Powerplants:INSTRUCTIONS:- Answer in this format: Given, Illustration, Required Conversion, Solution, Final Answer.- Step-by-step solution, do not skip even simple calculations to avoid confusion.- If answered in written form, make sure it is readable.PROBLEM:The per-unit impedance of a system is 0.7 pu. The base KVA is 300 kVA, and the base voltage is 11 kV. What is the per-unit impedance referred to as the 400-KVA and 38-KV base values? 0.0782 0.0735 0.0674 0.0691
A three-phase symmetrical double circuit line is arranged in a horizontal plane as shown in figure below. Calculate and derive an expression for the transposed line for the inductance. Assume balanced equally distributed loads
The figure below shows the one-line diagram of a four- bus power system. The voltages, the scheduled real power and reactive powers, and the reactances of transmission lines are marked at this one line diagram (The voltages and reactances are in PU referred to 100 MW base. The active power P2 in MW is the last three digits (from right) of your registration number (i.e for the student that has a registration number 202112396, P2 =396). [10] Starting from an estimated voltage at bus 2, bus 3, and bus 4 equals V2 (0) = 1.15<0°, V3 = 1.15 < 0°, V4 1.1< 0°. 1- Specify the type of each bus and known & unknown quantities at each bus. 2- Find the elements of the second row of the admittance matrix (i.e. [Y21 Y22 Y23 Y24]). 3- Using Gauss-Siedal fınd the voltage at bus 2 after the first iteration. 4- Using Newton-Raphson, calculate: |- The value of real power (P2), at bus 2 after the first iteration. Il- The second element in the first row of the Jacobian matrix after the first iteration. 2 P2…