Line Parameter Calculations

ENEE 205 · Chapter 4

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4.1

1 question

2081 ChaitraChapter 4: Line Parameter Calculations4.1 Inductance, Resistance and Capacitance of a Line
A 3 phase 132 kV, 50 Hz line has ASCR conductors of equivalent copper area $1.5\ \mathrm{cm}^2$ and effective diameter 39.8 mm, spaced equilaterally 8 m apart (i) find line parameters (ii) find charging current and charging MVA. Resistivity of copper is $1.73\times 10^{-6}\ \Omega\text{-cm}$.

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4.3

1 question

2082 KartikChapter 4: Line Parameter Calculations4.3 Skin and Proximity Effect
What do you mean by skin effect? Clarify it on the basis of AC current and DC current.

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4.4

1 question

2082 KartikChapter 4: Line Parameter Calculations4.4 Inductance of Single Phase Two Wire Line, Flux Linkage of Conductor in a Group, Inductance of Composite Conductor Lines, Stranded and Bundled Conductor Consideration, Concept of GMR and GMD, Inductance of Three Phase Line; Equilateral and Unsymmetrical Spacing
A 3-phase single circuit bundled conductor line with three sub conductors per phase has a horizontal configuration with spacing of 6.1 m between the center lines of adjacent phases as shown in figure. The distance between the sub conductors of each phase is 30.5 cm and each sub conductors has a diameter of 2.54 cm. Find the inductance per phase per km.

[IMAGE: Horizontal configuration of three phases with 6.1 m between the centers of adjacent phases (12.2 m overall); each phase is a bundle of three sub-conductors with 30.5 cm spacing between sub-conductors.]
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4.5

1 question

2081 ChaitraChapter 4: Line Parameter Calculations4.5 Transposition, Inductance of Double Circuit Three Phase Lines
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