A 60-Hz, 765-kV, three-phase overhead transmission line has two ACSR 900 kcmil 54/3 conductors per phase. Determine the 60-Hz resistance of this line in Ω/?? per phase at 25°�
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A 60-Hz, 765-kV, three-phase overhead transmission line has two ACSR 900 kcmil 54/3 conductors per phase....
4 A three-phase, 765-kV, 50-Hz transposed line is composed of four ACSR 1,510,500, 54/19 Parrot conductors per phase with flat horizontal spacing of 16 m. The conductors have a diameter of 3.8252 cm and a GMR of 1.5453 cm. The bundle spacing is 40 cm. The line is Km long, and for the purpose of this problem, a lossless line is assumed (a) Determine the transmission line surge impedance Zc, phase constant p, wave surge impedance loading SIL, and the...
A 3-phase, 60-Hz transmission line consisting of one ACSR Bluejay conductor per phase has a spacing of 9 m between conductors. The transmission line is 100 miles long and delivers 40 MW at 220 kV with a 0.9 pf lagging. Determine Voltage, current, and power factor at the sending end Voltage regulation and efficiency
Homework 24: Use the ALCOA conductor table from Glover, Sarma, Power System Analysis and Design, for this assignment A 12 kV 60 Hz three-phase three-wire overhead line has Drake ACSR conductors spaced 4 ft apart in an equilateral triangle. It is operating at 50 degrees C. a. Calculate resistance (0.1288 ohms/mile) of one phase of the line b. Calculate series inductance of the line (0.93 uH/m) c. Calculate shunt capacitance of the line. (12.47 pF/m) The line is 20 km...
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,...
Example 22 A three-phase, 60-Hz, completely transposed 345-kV, 200-km line has two 795,000-cmil (403-mm2) 26/2 ACSR conductors per bundle and the following positive-sequence line constants: z 0.032 + 10.35 /km y j4.2 x 10-6 S/km Full load at the receiving end of the line is 700 MW at 0.99 p.f. leading and at 95% of rated voltage. Assuming a medium-length line, determine the following: a. ABCD parameters of the nominal π circuit b. Sending-end voltage Vs, current Is, and real...
A 3-phase, 50 Hz overhead transmission line has the following constants : Resistance/phase = 9·6 Ω Inductance/phase = 0·097 mH Capacitance/phase = 0·765 μF If the line is supplying a balanced load of 24,000 kVA 0·8 p.f. lagging at 66 kV, calculate : (i) sending end current (ii) line value of sending end voltage (iii) sending end power factor (iv) percentage regulation (v) transmission efficiency
Problem 4 (10 points) A three-phase, 60 Hz, completely transposed overhead transmission line has one Redwing ACSR conductor per phase. The conductors are oriented in a flat, horizontal configuration with 5 meter spacings between A and B, 5 meter spacing between B and C, and 10 meters between A and C. What is the inductive reactance for a 10 mile length of this transmission line? Problem 5 (10 points) a.) Calculate the capacitance-to-neutral (F/m) for the transmission line of problem...
A 60 km-long three-phase 60-Hz transmission line has per phase line inductance of 1.554 mH/km and per phase line resistance of 10.33 mΩ/km. It supplies a three-phase Y connected 100 MW 0.9 lagging power factor load at 215 kV line-line voltage. Calculate the voltage regulation and efficiency of transmission.
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 60-Hz three-phase, three-wire overhead line has solid cylindrical conductors arranged in the form of an equilateral triangle with 1 m conductor spacing. Conductor diameter is 1.0 cm. Calculate the line inductance in H/m per conductor and the line inductive reactance in Ω/km per conductor.