![Assuming c-3× 〖10] ^8m/sec, what is the highest length of the power transmission line, you can model without invoking concepts of transmission line? State your assumptions explicitly](http://img.homeworklib.com/questions/55e76430-6114-11ea-afc2-bfa6334b315f.png?x-oss-process=image/resize,w_560)
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Assuming c-3× 〖10] ^8m/sec, what is the highest length of the power transmission line, you can...
2. Lumped versus distributed circuits (15%) (a) A transmission line of length 1 connects a load...
2. Lumped versus distributed circuits (15%) (a) A transmission line of length 1 connects a load to a sinusoidal voltage source with an oscillation frequency of f. Assuming that the velocity of wave propagation in the line is c (that is, the speed of light in vacuum), for which of the following sit- uations can we model the transmission line as a wire (that is, use a lumped-element model) and where do we need a distributed model? (i) f =...
a) What is power transfer limit of a long transmission line? List two methods that can...
a) What is power transfer limit of a long transmission line? List two methods that can be used to increase the power transfer limit of a long transmission line. Explain why. [2 p] b) If a two-winding transformer shown in Fig. 1 is reconnected as an autotransformer, the rated power is increased. Explain why. [3 p] Fig. 1 A two-winding transformer.
A 20-m length of transmission line is known to produce a 2.0-dB drop in power fronm...
A 20-m length of transmission line is known to produce a 2.0-dB drop in power fronm end to end. (a) What fraction of the input power reaches the output? (b) What fraction of the input power reaches the midpoint of the line? (c) What exponential attenuation coefficient, α, does this represent?
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 short 3-phase, 34-kV power transmission line delivers a load of 10-MW at a power factor...
A short 3-phase, 34-kV power transmission line delivers a load of 10-MW at a power factor of 0.9 lagging and 34-kV. If the series impedance of the line is 10+j15 Ohm/phase calculate; 1
A.)Engineers are tasked with calculating the dimensions of a transmission line from a power plant to...
A.)Engineers are tasked with calculating the dimensions of a transmission line from a power plant to a city 100 km away. The power plant outputs 765,000 V, and the transmission line must transport a minimum of 500,000 A of current. An intern looks up the value of resistivity from a database with the value of ?=1.29 ×10−8 Ω?. What is the diameter the wire the engineers need to use? Show work. B.) The intern was in the wrong database and...
a) A parallel plate transmission line has a plate width 3 mm, plate separation 0.3 mm...
a) A parallel plate transmission line has a plate width 3 mm, plate separation 0.3 mm and is filled with a dielectric of relative permittivity 2.2. The dielectric breakdown field is 180kV/cm. Find the maximum peak power that can be transmitted down it and the corresponding peak values of the transmission line voltages and currents when the transmission line is matched to a terminating load. (5 marks) b) A 1 GHz signal of voltage amplitude 0.1 Vis propagated without reflection...
power system A single-circuit 60-Hz high voltage power transmission line is 370 km (230 mi) long....
power system
A single-circuit 60-Hz high voltage power transmission line is 370 km (230 mi) long. The conductors are Rook with flat horizontal configuration and 7.25 ms=(23.8 ft.) conductor spacing. The load on the line is 125 MW at 100% power factor. Use attached Tables A3 to A3to determine; The sending end voltage Vs The sending end current Is The sending end power Ps The percentage voltage regulation The transmission efficiency Given that Ds for the Rook conductor is 0.0327...
Assume that you are a Power System Design Engineer working for a Power Utility Company You...
Assume that you are a Power System Design Engineer working for a Power Utility Company You are tasked with providing detailed engineering design and calculations for a transmission line project to deliver power to a remote mining facility. The preliminary studies have suggested that a single circuit transposed HV transmission line with the rated voltae ofrd and the length of-line 1s a feasible solution for this power transmission project. The schematic diagram of the proposed project is illustrated in Figure...
Problem 3: A three-phase, 60 Hz transmission line is built with an ACSR conductor. The conductor...
Problem 3: A three-phase, 60 Hz transmission line is built with an ACSR conductor. The conductor diameter is 0.68 inch, GMR = 0.023 ft., and AC resistance of 0.342 /mile at 50°C. The conductors are laterally spaced with D= 1.7 m between conductor centers. The line is 50 km long and supplies a 5 MW load. The line to line load voltage is 13.2 kV. [40 points] (a) Find the total impedance of the line. (b) Determine the sending-end voltage,...
2. Lumped versus distributed circuits (15%) (a) A transmission line of length 1 connects a load to a sinusoidal voltage source with an oscillation frequency of f. Assuming that the velocity of wave propagation in the line is c (that is, the speed of light in vacuum), for which of the following sit- uations can we model the transmission line as a wire (that is, use a lumped-element model) and where do we need a distributed model? (i) f =...
A 20-m length of transmission line is known to produce a 2.0-dB drop in power fronm end to end. (a) What fraction of the input power reaches the output? (b) What fraction of the input power reaches the midpoint of the line? (c) What exponential attenuation coefficient, α, does this represent?
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 short 3-phase, 34-kV power transmission line delivers a load of 10-MW at a power factor of 0.9 lagging and 34-kV. If the series impedance of the line is 10+j15 Ohm/phase calculate; 1
a) A parallel plate transmission line has a plate width 3 mm, plate separation 0.3 mm and is filled with a dielectric of relative permittivity 2.2. The dielectric breakdown field is 180kV/cm. Find the maximum peak power that can be transmitted down it and the corresponding peak values of the transmission line voltages and currents when the transmission line is matched to a terminating load. (5 marks) b) A 1 GHz signal of voltage amplitude 0.1 Vis propagated without reflection...
power system
A single-circuit 60-Hz high voltage power transmission line is 370 km (230 mi) long. The conductors are Rook with flat horizontal configuration and 7.25 ms=(23.8 ft.) conductor spacing. The load on the line is 125 MW at 100% power factor. Use attached Tables A3 to A3to determine; The sending end voltage Vs The sending end current Is The sending end power Ps The percentage voltage regulation The transmission efficiency Given that Ds for the Rook conductor is 0.0327...
Assume that you are a Power System Design Engineer working for a Power Utility Company You are tasked with providing detailed engineering design and calculations for a transmission line project to deliver power to a remote mining facility. The preliminary studies have suggested that a single circuit transposed HV transmission line with the rated voltae ofrd and the length of-line 1s a feasible solution for this power transmission project. The schematic diagram of the proposed project is illustrated in Figure...
Problem 3: A three-phase, 60 Hz transmission line is built with an ACSR conductor. The conductor diameter is 0.68 inch, GMR = 0.023 ft., and AC resistance of 0.342 /mile at 50°C. The conductors are laterally spaced with D= 1.7 m between conductor centers. The line is 50 km long and supplies a 5 MW load. The line to line load voltage is 13.2 kV. [40 points] (a) Find the total impedance of the line. (b) Determine the sending-end voltage,...
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