Cart (Loading....) | Create Account
Close category search window
 

The Effect of Discontinuities in a Multiconductor Line on Lightning-Induced Voltages

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Rojas, P.E.M. ; Centro Politec. da Univ. Fed. do Parana (UFPR), Curitiba

The effect of discontinuities in a transmission line on lightning-induced voltages is studied using a new field-to-line coupling model. For a shielding wire with an isolated grounding, it is shown that the mitigation of the induced voltages is due to the actuation of the localized grounding, when it is illuminated. It protects the line at its location and behind it, reducing the induced voltages by an amount that depends on the grounding resistance and the geometry of the conductors of the line, and also protects some points in front of it, but only within a certain ldquoeffective distancerdquo that is dependent on the rise time of the induced voltages. For a periodically grounded shielding wire, it is shown that the reflection, at the grounding points, of the voltage reduction waves produced by the other groundings, produce oscillating induced overvoltages that are mainly confined in the line span in front of the strike. The effectiveness of the shielding wire can be enhanced if the insulation of the shielding wire is utilized as a protective gap. It is also shown that the effect of the ground resistivity is very important but is very different depending on the permittivity of the ground.

Published in:

Electromagnetic Compatibility, IEEE Transactions on  (Volume:51 ,  Issue: 1 )

Date of Publication:

Feb. 2009

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.