The ABCD constants of a three-phase, 345-kV transmission line areA-D-0.98 182 + 10.00 12447B-4.035 + j58947C j0.00061137The line delivers 400 MVA at 0.8 lagging power factor at 345 kV. Determine thesending end quantities, voltage regulation, and transmission efficiency.Hint: Efficiency is equal to the ratio of active power at the receiving end to the active power atthe sending end.

Question
Asked Feb 5, 2019
496 views

The ABCD constants of a three-phase, 345-kV transmission line are:
A = D = 0.98182 + j0.0012447.
B = 4.035 + j58.947.
C = j0.00061137.
The line delivers 400 MVA at 0.8 lagging power factor at 345 kV. Determine the sending end quantities, voltage regulation, and transmission efficiency.
Hint: Efficiency is equal to the ratio of active power at the receiving end to the active power at the sending end.

The ABCD constants of a three-phase, 345-kV transmission line are
A-D-0.98 182 + 10.00 12447
B-4.035 + j58947
C j0.00061137
The line delivers 400 MVA at 0.8 lagging power factor at 345 kV. Determine the
sending end quantities, voltage regulation, and transmission efficiency.
Hint: Efficiency is equal to the ratio of active power at the receiving end to the active power at
the sending end.
help_outline

Image Transcriptionclose

The ABCD constants of a three-phase, 345-kV transmission line are A-D-0.98 182 + 10.00 12447 B-4.035 + j58947 C j0.00061137 The line delivers 400 MVA at 0.8 lagging power factor at 345 kV. Determine the sending end quantities, voltage regulation, and transmission efficiency. Hint: Efficiency is equal to the ratio of active power at the receiving end to the active power at the sending end.

fullscreen
check_circle

Expert Answer

Step 1

Since, the given ABCD parameters for the 345 kV transmission lines are:

A = D = 0.98182 + j0.0012447
B = 4.035 + j58.947
C = j0.00061137

Also, this transmission line is operated to deliver power 400 MVA at lagging power factor of 0.8 and voltage 345 kV.

Step 2

As the transmission line operates at voltage 345 kV thus, the receiving end voltage per phase for this transmission line is as:

fullscreen
Step 3

Also, the power delivered by the transmission line is 400 MVA at a lagging power facto...

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Engineering

Electrical Engineering

Related Electrical Engineering Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: e lar Cov depemaent Source loiC나 VTR 3 /2 3另

A: Follow below steps to obtain the result: -Apply Kirchhoff’s voltage law in the loop and solve as bel...

question_answer

Q: Please see the attached photo to view my question. Thank you.

A: Refer to the given Figure, the initial voltage v(0) is zero for t < 0.

question_answer

Q: Examiner lecturer: Hawraa Qasim Date: 16/4/2018 unleridtions&Measurements Division: Electrical Engin...

A: (a) Dynamometer:This is type of measurement device that is used to measure voltage, current, and pow...

question_answer

Q: A single phase transmission line has two parallel conductors 1·5 metres apart, the diameter of each ...

A: Given,The spacing between the two parallel conductors is,

question_answer

Q: e foll a Onny uruut hind 34%

A: Part (a): Refer to Figure as shown in the part (a) of the given question.According to the Maximum po...

question_answer

Q: Find the Thevenin's equivalent of the following circuit looking through ab. 2Ω 2Ω 2 A

A: To find the Thevenin voltage across the terminals a-b.The given circuit is redrawn as shown in Figur...

question_answer

Q: please could you help me to find the solution of  question (b)

A: The output of each meter should be determined.

question_answer

Q: Feedback Control of Dynamic Systems (7th edition) - Problem 7.25

A:  First, find out the canonical form from the given transfer function    and after that design a cont...

question_answer

Q: The initial voltage across a 7.5F capacitor is 4.5V after 0.5 seconds. If the current is described a...

A: Initial voltage Vo=4.5 VC=7.5FAt 0.5s current is given as: