1. The distance of 25 km has to be carried a power of 12 MW. Because the line is uncompensated, k factor is 0.1, determine the following: a. The Line voltage. %3D b. The conductor size. c. The voltage regulation
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- High Voltage level in Transmission system ensures ………………… a. High current in Overhead conductors b. Less power factor c. Low Power Transfer d. Reduction in conductor sizeFind the GMR of this conductor as r.( Need handwritten solution only please otherwise downvote)An overhead line has span of 260m. The tension in the line is 1200kg while the conductor weighs 650 kg per 100 meters. Calculate the maximum SAG in the conductor. If the height of the tower is 13 meters, estimate the clearance of conductor to the ground. Draw a figure and mark values of sag, clearance, span, height of conductor etc.
- In a three-phase line, in order to avoid unequal phase inductances due to unbalanced flux linkages, what technique is used?Question 1) A 154 kV transmission line has a length of 100 km. The line and the conductors are given in Figure 1. The line is operated at f= 50 Hz. For both old and new lines calculate; a. GMD and GMR. b. Inductance of the line in Henries (H). c. Series Impedance (Z) of the line in Ohms. d. *Compare the results for both lines and comment on the results. e. *If the distance between the two neighbouring conductors is increase from 13 meters to 15 meters what would be the parameters in part a.,b. and c. comment on the results. New Line's Conductors 13 m 13 m Old Line's Conductors d r = 2 cm d = 40 cm r = 2 cm Figure 1Consider the 500 kV, three phase bundled conductor line as shown in the figure below. Find the line to neutral capacitance. 0.5 m 30 mm (0) (O to Ine 15 m 15 m
- Problem #1 • An overhead line has span of 260m. The tension in the line is 1200kg while the conductor weighs 650 kg per 100 meters. Calculate the maximum SAG in the conductor. If the height of the tower is 13 meters, estimate the clearance of conductor to the ground. Draw a figure and mark values of sag, clearance, span, height of conductor etc.12. There are 6 conductors in a double circuit line. Each conductor has a radius of 12 mm. The 6conductors are arranged horizontally. The center to center distance between the conductor is 2m. The sequence of conductors are from left to right as follows: a,b.c,a', b', c'. Calculate the inductance per km per phase of system. the a' 2 m 2 m 2 m 2 m 2 mIn a string of suspension insulator with three units, the line unit has 20kV and k=0.35. The voltage across tower unit is........ and across middle unit is.......
- A dc two line distributor AB 600 metre long is fed at 440 V from substation A and at 430 V from substation B, the load are: 100 A at C (150 m from A), 200 A at D (150 m from C), 250 A at E (50 m from D), 300 A at F (100 m from E). If each line conductor has a resistance of 0.01 ohm per 100 m, calculate the current supplied from substation A and B and the voltage across each load.What is load line and what is duty cycle?10- If power factor is less than unity then it will result in a. Large kVA rating of equipment b. Large copper losses c. Greater conductor size d. Large kVA rating of equipment, Greater conductor size and Large copper losses