Q1) A 2-conductor cable 1 km long is required to supply aconstant current of 200A throughout the 4000 hour in year. Thecost of cable including installation is Rs. (10 a + 10) per meterwhere "a' is the area of X-section of the conductor in cm2. Thecost of energy is 5P per kWh and interest and depreciationcharges amount toconductor size. Assume resistivity of conductor to be 1-73 u N20%. Calculate the most economicalст

Given Two conductor cable Length of the conductor l=1 kmConstant Current I=200 ATotal hours t=4000…

Q1) A 2-conductor cable 1 km long is required to Supply a constant current of 200A throughout the 4000 hour in year. The cost of cable including installation is Rs. (10 a+ 10) per meter where 'a' is the area of X-section of the conductor in em². The cost of energy is 5P per kWh and interest and depreciation charges amount conductor size. Assume resistivity of conductor to be 1-73 u N to 20%. Calculate the most economical cm

Q1) A 2-conductor cable 1 km long is required to Supply a constant current of 200A throughout the 4000 hour in year. The cost of cable including installation is Rs. (10 a+ 10) per meter where 'a' is the area of X-section of the conductor in em². The cost of energy is 5P per kWh and interest and depreciation charges amount conductor size. Assume resistivity of conductor to be 1-73 u N to 20%. Calculate the most economical cm

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.1P: The Aluminum Electrical Conductor Handbook lists a dc resistance of 0.01558 ohm per 1000 ft at 20C...

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Similar questions

A solid cylindrical aluminum conductor 25 km long has an area of 336,400 circular mils. Obtain the conductor resistance at 20C and 50C. Find the AC resistance per Km of the cable at 50C. Assume a skin-effect correction factor of 1.02 at 50 Hz. The resistivity of aluminum at 20C is 2.8x10-8 Ωm
A copper wire at 20 degrees C, and 164 cmil, has a K value of 10.4 ohms per mi-foot. If the distance to the load is 600 feet (183 m) calculate the resistance of the loop.
A portion of an overhead conductor is taken to be s metres long. The tension in the conductor is T Newton metres. The unit weight of the conductor is given as W Newton per metre. The line tension, T has a horizontal component of To and a vertical component of Wx. S makes an angle, α with the horizontal plane. Derive a equation for s in terms of T
(b) A 3-phase, 50 Hz, 132 kV overhead line of length 150 km has conductors placed in ahorizontal plane. The diameter of the conductors is 20 mm and assume completetransposition arrangement is applied. (i) Analyse the charging current per phase when the conductors spacing are set at 4 m (ii) Investigate the range of conductor spacing that should be chosen in order to reducethe magnitude of the charging current per phase in Q2 (b)(i) by 5% or more.
The three conductors of a 3-φ line are arranged at the corners of a right angled isosceles triangle. If each equal side of this triangle is 2 m, find line-to neutral capacitance per km. Take the diameter of each conductor as 1·24 cm. The conductors are transposed at regular intervals. [0·0094 μF/km]
What is the maximum length in km for a 3 phase T.L having copper conductor of 0.775 cm2 crass section over which 200 KW at unity power factor and at 3300 V are to be delivered, the efficiency if T.L is 90%, take specific resistance as 1.725 μΩ cm
4. An aluminum conductor having a cross-sectional area of 1843 MCM is used to transmit power from a high-voltage dc (HVDC) generating station to a large urban center. If the city is 900 km from the generating station, determine the resistance of the conductor at a temperature of 20oC. (Use 1 ft = 0.3048 m.) *Round off to 4 decimal digits.
The Aluminum Electrical Conductor Handbook lists a dc resistance of 0.01558 ohm per 1000 ft (or 0.05112 ohm per km) at 20 degree celcius and a 60 Hz resistance of 0.0956 ohm per mile (or 0.0594 ohm per km) at 50 degree celcius for the all-aluminum Marogold conductor, which has 61 strands and whose size is 564 mm2 or 1113 kcmil. Assuming an increase in resistance at 50 degree celcius, and determine the percentage due to skin effect.
Q4. A Transmission Line has a span of 250 meters between two level supports. The conductor has a cross-sectional area of 1.29 cm2, weighs 1170 kg/km and has a breaking stress of 4218 kg/cm2. Calculate the sag for a safety factor of (5), allowing a wind pressure of 122 kg per square meter of projected area. What is the vertical sag?
Compute the resistance of a conductor whose resistivity is 20.54 ohm-CM per foot with circularc ross-sectional area of 38 mm2a nd length of 5,000 meters. If the conductor is drawn until its resistance becomes 10 ohms, what will be its new length?
Q1. Transmission and distribution lines are important components of any power system study. (A) In relation to high voltage overhead ac transmission lines, Discuss the choice of materials for the conductors in terms of their electrical/mechanical properties and the costs involved. Discuss the factors that determine the distance (D) between phase conductors and explain the impact of the distance D on the inductance and capacitance values of the line at different voltage levels. Support your arguments with relevant equations where appropriate. Discuss the impact of the radius of the conductors on phase capacitance and inductance values and why bundles are used at very high voltages.
The three conductors A, B and C of a 3-φ line are arranged in a horizontal plane with DAB = 2 m and DBC = 2·5 m. Find line-to-neutral capacitance per km if diameter of each conductor is 1·24 cm. The conductors are transposed at regular intervals