A 75 km long 60 Hz transmission line is rated at 220 KV and 150 MVA. The line has the following parameters: r= 0.09 Q/Km x= 0.88 02/km y = 4.1 x 10^-60/km The voltage at the load is 210 KV and the load is rated load that is 150 MVA at a power factor (PF) of 0.85 lagging. 1) Find the series impedance of the line. 2) Find the ABCD parameter of the line. 3) What is the sending end voltage?

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
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.13MCQ
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A 75 km long 60 Hz transmission line is rated at 220 KV and 150 MVA. The line has the following
parameters:
r= 0.09 Q/Km
x= 0.88 02/km
y = 4.1 x 10^-60/km
The voltage at the load is 210 KV and the load is rated load that is 150 MVA at a power factor
(PF) of 0.85 lagging.
1) Find the series impedance of the line.
2) Find the ABCD parameter of the line.
3) What is the sending end voltage?
4) What is the voltage regulation (VR) of the line?
5) What is the percentage efficiency of the line?
Note: For TL short line, the capacitance is neglected. In this problem is assumed that this is a
balanced three-phase system. So, we need to convert line to line to a single phase.
Transcribed Image Text:A 75 km long 60 Hz transmission line is rated at 220 KV and 150 MVA. The line has the following parameters: r= 0.09 Q/Km x= 0.88 02/km y = 4.1 x 10^-60/km The voltage at the load is 210 KV and the load is rated load that is 150 MVA at a power factor (PF) of 0.85 lagging. 1) Find the series impedance of the line. 2) Find the ABCD parameter of the line. 3) What is the sending end voltage? 4) What is the voltage regulation (VR) of the line? 5) What is the percentage efficiency of the line? Note: For TL short line, the capacitance is neglected. In this problem is assumed that this is a balanced three-phase system. So, we need to convert line to line to a single phase.
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Follow-up Question
A 75 km long 60 Hz transmission line is rated at 220 KV and 150 MVA. The line has the following
parameters:
r= 0.09 Q/Km
x= 0.88 02/km
y = 4.1 x 10^-60/km
The voltage at the load is 210 KV and the load is rated load that is 150 MVA at a power factor
(PF) of 0.85 lagging.
1) Find the series impedance of the line.
2)
Find the ABCD parameter of the line.
3) What is the sending end voltage?
4) What is the voltage regulation (VR) of the line?
5) What is the percentage efficiency of the line?
Note: For TL short line, the capacitance is neglected. In this problem is assumed that this is a
balanced three-phase system. So, we need to convert line to line to a single phase.
Transcribed Image Text:A 75 km long 60 Hz transmission line is rated at 220 KV and 150 MVA. The line has the following parameters: r= 0.09 Q/Km x= 0.88 02/km y = 4.1 x 10^-60/km The voltage at the load is 210 KV and the load is rated load that is 150 MVA at a power factor (PF) of 0.85 lagging. 1) Find the series impedance of the line. 2) Find the ABCD parameter of the line. 3) What is the sending end voltage? 4) What is the voltage regulation (VR) of the line? 5) What is the percentage efficiency of the line? Note: For TL short line, the capacitance is neglected. In this problem is assumed that this is a balanced three-phase system. So, we need to convert line to line to a single phase.
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