3.6. Fig. 3.26 shows a three phase double circuit line. Radius of each conductor is 1...
PLEASE DON'T THROW ANY RANDOM ANSWER PLEASE The Fig. 1 shows a double-circuit three-phase 500-kV. 60 Hz, 300-km, on a steel tower completely transposed, symmetrical about both the horizontal and vertical center lines. The diameter of each conductor is 3.796298186 cm. The resistance of the transmission line is 2.84x10-4 Ω-m and the line is lossless. The receiving-end power is 800 MW at 0.8 power factor lagging and at 500 kV 14 m 14 m 14 m 14 m 1. Determine...
thank you and def thumps up. 4-130%) A 60-Hz, 3-phase, 10-km long, fully transposed, 69-kV following conductor arrangement: 5 m 8 m The conductors are made of solid aluminum with resistivity of 2.83-10* m at 20 °C, temperature coefficient of 0.39%"C, diameter of 250 mils (0.25 in), operating at 120 °C with skin effect ot 4.5%. (a) Obtain the series impedance per phase of the line. Zs (b) Obtain the shunt admittance to ground per phase of the line, the...
Problem #1: A single-circuit, 500 kV, 60 Hz, three-phase transmission line is 250 km long. The characteristic parameters of the transmission line are: x0.4 0/km At full load, the line delivers 1000 MVA at 500 kV with 0.80 PF lagging y j4 x 10 S/km r0.045 /km a. Assume that identical shunt reactors (inductors) are connected from each phase conductor to neutral at both ends of the line during light-load conditions, providing 50% total shunt compensation. The reactors are removed...
Fig. Q3 shows the one-line diagram of a three-phase power system. As shown in Fig. 23, the two zones are connected by a 400 MVA, 240-kV/24-kV, Y-A three phase transformer. The Y-three phase transformer has an equivalent series impedance of 2T - 1.2 + |1.6 per phase referred to the high-voltage side (primary side). The three-phase power system can be studied with per unit quantities using base values of So=500 MVA and 240 kV in zone 1. 2 -1.61253.15" Line...
Problem #1 Part I (50 points) Consider the following one-line diagram of a three-phase power system. Assume that the system has the following base quantities: S3 100 MVA, and VbaselL 38 kV at the generator side. The rated line-to-line terminal voltage of the generator (BUS 1) is 38 kV. A single-circuit three-phase transposed overhead line composed by one ACSR Partridge conductor per phase with vertical configuration. The transmission line length is 50 km and the distance between phases a-b, b-c...
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 200-km, 230-kV, 60-Hz three-phase line has a positive-sequence series impedance ?=0.08+?0.48 Ω/km and a positive-sequence shunt admittance ?=?3.33×10−6 S/km. At full load, the line delivers 250 MW at 0.99 pf lagging and at 220 kV. Using the nominal ? circuit, calculate: a. The ABCD parameters, b. The sending-end voltage and current, c. The percent voltage regulation.
Problem 2. Figure 2 shows the conductor configuration of a three-phase transmission line and a telephone line supported on the same towers. The power line carries a balanced current of 250 A/phase] at 60 Hz], while the telephone line is directly located below phase b. Assume balanced three-phase currents in the power line. Calculate the voltage per kilometer induced in the telephone line 4.6 m 4.6 m 5 m 2 1.2 m- Figure 2: Composition of bundle conductors
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...