QUESTION 1: For the 3-ph, double circuit O.H.T.L shown below: 1- Find the spacing between the two conductors in the double bundle constructing each phase such that the voltage drop across this 380 km transmission line should not exceed 20 kV when this transmission line supplies a load with an apparent power of S in MVA at 0.85 lagging power factor at 240 kV, where S = 200 + LL and LL is the last two digits (from right) of yolur registration number. Each conductor in the bundle has a radius of 0.0552 ft and a geometric mean radius (Ds = 1.69 cm). 2- Find the total charging current and the total reactive power generated by the capacitive effect of this transmission line. 3- Suggest a way to reduce this voltage drop to 10 kV. Verify your answer. 8 m B1 B2 ci +6 m -

QUESTION 1: For the 3-ph, double circuit O.H.T.L shown below: 1- Find the spacing between the two conductors in the double bundle constructing each phase such that the voltage drop across this 380 km transmission line should not exceed 20 kV when this transmission line supplies a load with an apparent power of S in MVA at 0.85 lagging power factor at 240 kV, where S = 200 + LL and LL is the last two digits (from right) of yolur registration number. Each conductor in the bundle has a radius of 0.0552 ft and a geometric mean radius (Ds = 1.69 cm). 2- Find the total charging current and the total reactive power generated by the capacitive effect of this transmission line. 3- Suggest a way to reduce this voltage drop to 10 kV. Verify your answer. 8 m B1 B2 ci +6 m -

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 4.23P

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Similar questions

A 60-Hz, single-phase two-wire overhead line has solid cylindrical copper conductors with a 1.5 cm diameter. The conductors are arranged in a horizontal configuration with 0.5 m spacing. Calculate in mH/km (a) the inductance of each conductor due to internal flux linkages only, (b) the inductance of each conductor due to both internal and external flux linkages, and (c) the total inductance of the line.
Calculate the capacitance-to-neutral in F/m and the admittance-to-neutral in S/km for the three-phase line in Problem 4.18. Also calculate the line-charging current in kA/phase if the line is 110 km in length and is operated at 230 kV. Neglect the effect of the earth plane.
A single-phase overhead transmission line consists of two solid aluminum conductors having a radius of 3 cm with a spacing 3.5 m between centers. (a) Determine the total line inductance in mH/m. (b) Given the operating frequency to be 60 Hz, find the total inductive reactance of the line in /km and in/mi. (c) If the spacing is doubled to 7 m, how does the reactance change?
Find the inductive reactance per mile of a single-phase overhead transmission line operating at 60 Hz given the conductors to be Partridge and the spacing between centers to be 30 ft.
A 30 mile, 3-phase transmission line delivers 8,000 kW at 33 kV, p.f. 0.8 lagging. The resistance and reactance of single conductor are 0.6 ohm and 0.72 ohm respectively per mile. Find the voltage at the sending end in kV.
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In the power system whose single line diagram is shown below, the line cross section is 95 mm2, the intrinsic conductivity coefficient is 34m/ohm.mm2 and the inductive reactance of the line is given as 0.4 ohm/km. According to these values; a) Calculate the active, reactive and visible components of the currents passing through each line segment.b) Find the location and value of the largest voltage drop.