Q. In a three phase 420 kV high-voltage overhead transmission line, the diameter of the conductors is given as 32 mm. a) Using the approximated maximum field calculation, determine the minimum distance between two phases (breakdown strength of air is 30 kV/cm, and k=0.85). b) In this configuration, if the distance between conductors (phases) is 0.8 m, at which voltage level there will be a flashover (discharge). c) In the same configuration, determine the maximum field strength if electrode separation is 1.75 m.
Q. In a three phase 420 kV high-voltage overhead transmission line, the diameter of the conductors is given as 32 mm. a) Using the approximated maximum field calculation, determine the minimum distance between two phases (breakdown strength of air is 30 kV/cm, and k=0.85). b) In this configuration, if the distance between conductors (phases) is 0.8 m, at which voltage level there will be a flashover (discharge). c) In the same configuration, determine the maximum field strength if electrode separation is 1.75 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 4.18P: A 230-kV, 60-Hz, three-phase completely transposed overhead line has one ACSR 954 kcmil conductor...
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