A 22kV, 50 Hz overhead transmission line connects Ibra and Muscat. There are three units in a string of insulators. If the capacitance between each insulator pin and earth is 13% of self-capacitance of each insulator, Calculate: i. Distribution of voltage over 3 insulators ii. String efficiency iii. Draw a suitable figure for this problem and mark the self-capacitance, capacitance between pin and earth, voltages and currents. iv. Calculate the new string efficiency if the third insulator which is near the conductor is removed.

A 22kV, 50 Hz overhead transmission line connects Ibra and Muscat. There are three units in a string of insulators. If the capacitance between each insulator pin and earth is 13% of self-capacitance of each insulator, Calculate: i. Distribution of voltage over 3 insulators ii. String efficiency iii. Draw a suitable figure for this problem and mark the self-capacitance, capacitance between pin and earth, voltages and currents. iv. Calculate the new string efficiency if the third insulator which is near the conductor is removed.

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 4.26MCQ: Does r=e14r=0.788r, which comes in calculation of inductance, play a role in capacitance...

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