The per-phase impedance of a short transmission line is (0.3+j0.4) Ω. The sending end line-to-line voltage is 3300V, and the load at the receiving end is 300 kiloWatts per phase at 0.8 power factor la...
The per-phase impedance of a short transmission line is (0.3+j0.4) Ω. The sending end line-to-line voltage is 3300V, and the load at the receiving end is 300 kiloWatts per phase at 0.8 power factor lagging. Calculate:
(a) The receiving end voltage
(b) The line current
(c) The sending end power factor
(d) The power loss.
Homework Answers
Add Answer to:
The per-phase impedance of a short transmission line is (0.3+j0.4) Ω. The sending end line-to-line voltage is 3300V, and the load at the receiving end is 300 kiloWatts per phase at 0.8 power factor la...
A three-phase transmission line is 200 km long. lt has a total series impedance of 25+j110)Ω...
A three-phase transmission line is 200 km long. lt has a total series impedance of 25+j110)Ω Per Phase and a total shunt admittance ofj5x 10 Ω. It delivers 180 MW at 275 kV and 0.8 power factor lagging to a load connected at the receiving end. Using the medium π model of the line, determine the voltage, current, real power, reactive power and power factor at the sending end of the line.
A short 3-phase, 33-kV power transmission line delivers a load of 7-MW at a power factor...
A short 3-phase, 33-kV power transmission line delivers a load of 7-MW at a power factor of 0.85 lagging and 33-kV. If the series impedance of the line is 20+j30 Ohms/phase, calculate The ABCD constants (parameters) The sending end voltage The load angle The voltage regulation The transmission efficiency
kV/phase, 60 Hz, lossless short transmission line has a short-circuit power of 500 MVA/phase. Consider 7. A a unity power factor load connected at the receiving end. Assume that the sending end volta...
kV/phase, 60 Hz, lossless short transmission line has a short-circuit power of 500 MVA/phase. Consider 7. A a unity power factor load connected at the receiving end. Assume that the sending end voltage is equal to the nominal voltage. a. Determine the maximum active power this line can transmit (5 points) b. Determine the reactance of the line (5 points) c. Using basic equations of circuit analysis, show that the magnitude of the receiving end voltage (VR) is approximately 71%...
The impedance of a three-phase line is 0.3 + j 2.4 per phase. The line feeds...
The impedance of a three-phase line is 0.3 + j 2.4 per phase. The line feeds two balanced three- phase loads connected in parallel. The first load takes 600 kVA at 0.7 p.f. lagging. The second takes 150 kW at unity power factor. The line to line voltage at the load end of the line is 3810.5 V. Find a) The magnitude of the line voltage at the source end of the line. b) The total active and reactive power...
PROBLEM: A 230-kV, 50 Hz, three-phase transmission line is 120 km long. The line has a per phase ...
PROBLEM: A 230-kV, 50 Hz, three-phase transmission line is 120 km long. The line has a per phase series impedance of z-0.05 +j0.45 Ω per km, and a per phase shunt admittance of y 3.4x10-6 Siemens per km. The line delivers (at the receiving end) 200 MVA, 0.8 lagging power factor at 220 kV. Now consider two cases: A- Assume that shunt parameters of the transmission line are ignored (i.e. even if this is a medium length transmission line, under...
A 3-phase 60 Hz 50 km transmission line delivers 20 MW of power to a load...
A 3-phase 60 Hz 50 km transmission line delivers 20 MW of power to a load at 69 kV and a power factor of 0.8 lagging. The line has the following parameters r = 0.1112/km L = 1.11 mH/km C = negligible Determine: The line impedance. (4 Marks) The "receiving end" phase voltage and current (7 Marks) The "sending end" voltage and current (10 Marks) The voltage regulation. (4 Marks)
A 230kV three phase transmission line has a per phase series impedance of z=0.05+j0.45ohms per km...
A 230kV three phase transmission line has a per phase series impedance of z=0.05+j0.45ohms per km and a per phase shunt admittance of y= j3.4x10^-6 siemens per km. The line is 80km long. Using the medium line pi model: (a) Determine the transmission line model constants A, B, C, and D (b) Find the sending end (generating) voltage, current and power when the line delivers to a load of 1. 200 MVA with 0.8 lagging power factor at 220 kV...
A 4200-V, three-phase transmission line has an impedance of 4+j10 22 per phase. If it supplies...
A 4200-V, three-phase transmission line has an impedance of 4+j10 22 per phase. If it supplies a load of 1 MVA at 0.75 power factor (lagging), find: (a) the complex power (b) the power loss in the line (c) the voltage at the sending end
A 230-kV, three-phase transmission line has a per phase series impedance of z = 0.05j0.45 2...
A 230-kV, three-phase transmission line has a per phase series impedance of z = 0.05j0.45 2 per km and a per phase shunt admittance ofy = j3.4 x 10-6 siemens per km. The line is 80 km long. Using the nominal r model, determine (a) The transmission line ABCD constants. Find the sending end voltage and current, voltage regulation, the sending end power and the transmission efficiency when the line delivers (b) 200 MVA, 0.8 lagging power factor at 220...
Athree-phase, 132KV, 50Hz, 200km long overhead line delivers a load of 40MVA at 0.8 power factor...
Athree-phase, 132KV, 50Hz, 200km long overhead line delivers a load of 40MVA at 0.8 power factor lagging. The per phase impedance and admittance of the line per km are (0.173 +0.667) ohms and j5 x 10mho respectively. Find the regulation of the line with the sending end voltage being held constant.
A three-phase transmission line is 200 km long. lt has a total series impedance of 25+j110)Ω Per Phase and a total shunt admittance ofj5x 10 Ω. It delivers 180 MW at 275 kV and 0.8 power factor lagging to a load connected at the receiving end. Using the medium π model of the line, determine the voltage, current, real power, reactive power and power factor at the sending end of the line.
kV/phase, 60 Hz, lossless short transmission line has a short-circuit power of 500 MVA/phase. Consider 7. A a unity power factor load connected at the receiving end. Assume that the sending end voltage is equal to the nominal voltage. a. Determine the maximum active power this line can transmit (5 points) b. Determine the reactance of the line (5 points) c. Using basic equations of circuit analysis, show that the magnitude of the receiving end voltage (VR) is approximately 71%...
PROBLEM: A 230-kV, 50 Hz, three-phase transmission line is 120 km long. The line has a per phase series impedance of z-0.05 +j0.45 Ω per km, and a per phase shunt admittance of y 3.4x10-6 Siemens per km. The line delivers (at the receiving end) 200 MVA, 0.8 lagging power factor at 220 kV. Now consider two cases: A- Assume that shunt parameters of the transmission line are ignored (i.e. even if this is a medium length transmission line, under...
A 3-phase 60 Hz 50 km transmission line delivers 20 MW of power to a load at 69 kV and a power factor of 0.8 lagging. The line has the following parameters r = 0.1112/km L = 1.11 mH/km C = negligible Determine: The line impedance. (4 Marks) The "receiving end" phase voltage and current (7 Marks) The "sending end" voltage and current (10 Marks) The voltage regulation. (4 Marks)
A 4200-V, three-phase transmission line has an impedance of 4+j10 22 per phase. If it supplies a load of 1 MVA at 0.75 power factor (lagging), find: (a) the complex power (b) the power loss in the line (c) the voltage at the sending end
A 230-kV, three-phase transmission line has a per phase series impedance of z = 0.05j0.45 2 per km and a per phase shunt admittance ofy = j3.4 x 10-6 siemens per km. The line is 80 km long. Using the nominal r model, determine (a) The transmission line ABCD constants. Find the sending end voltage and current, voltage regulation, the sending end power and the transmission efficiency when the line delivers (b) 200 MVA, 0.8 lagging power factor at 220...
Athree-phase, 132KV, 50Hz, 200km long overhead line delivers a load of 40MVA at 0.8 power factor lagging. The per phase impedance and admittance of the line per km are (0.173 +0.667) ohms and j5 x 10mho respectively. Find the regulation of the line with the sending end voltage being held constant.
Most questions answered within 3 hours.
-
Feynman's use of path integrals can make some of the transition
from quantum scale to real...
asked 2 minutes ago -
The following circuits (1 & 2) are combined to form a
series-parallel circuit and resulting circuit...
asked 3 minutes ago -
Pb(NO3)2 (aq) + 2 KCl (aq) PbCl2 (s) + 2 KNO3 (aq)
If 54.5mL of 3.82M...
asked 3 minutes ago -
Razeghi (2008) states "In order to succeed at innovation, do not
focus on being creative; rather...
asked 9 minutes ago -
How much heat is required at constant pressure to melt 1 mole of
ice at -25...
asked 12 minutes ago -
Suppose N is a discrete random variable defined by probability
distribution:
n
Pr(N = n)
10...
asked 13 minutes ago -
why are special-interest travelers becoming more important to
tourism service suppliers?
asked 17 minutes ago -
A 50.0-kg child takes a ride on a Ferris wheel that rotates four
times each minute...
asked 39 minutes ago -
What happens to the distribution of gene alleles when a
reproductive isolation arises between different population...
asked 37 minutes ago -
1 – Balance the following
Bi(OH)3 + SnO22- →
SnO32- +
Bi
asked 50 minutes ago -
Explain what we mean by "The electric field at the point marked
X is 10 N/C."...
asked 1 hour ago -
What is the positive energy states in Dirac’s picture? It says
that it leaves an empty...
asked 1 hour ago