Go to  Advanced Search

Lightning surge propagation in overhead lines and gas insulated bus-ducts and cables

Show full item record

Files in this item

Files Size Format Description   View
UBC_1980_A1 L35.pdf 5.429Mb Adobe Portable Document Format   View/Open
 
Title: Lightning surge propagation in overhead lines and gas insulated bus-ducts and cables
Author: Lee, Kai-Chung
Degree Doctor of Philosophy - PhD
Program Electrical and Computer Engineering
Copyright Date: 1980
Subject Keywords Lightning; Electric power transmission -- Mathematical models
Abstract: The propagation characteristics of lightning surges in compressed SF₆ gas insulated power substation was studied using an electromagnetic transients program. Numerical models were developed to represent the behaviour of different system components especially under lightning over-voltage conditions. The characteristics of lightning surge propagation in overhead multi-phase untransposed transmission lines was analysed first. Modal analysis, together with special rotation techniques to fit time domain solutions were then used to simulate the wave propagation in multi-phase untransposed line in an electromagnetic transients program. Non-linear voltage-dependent corona attenuation and distortion phenomena were also investigated. Available field test results could be duplicated to within 5%. The characteristics of lightning surge propagation in multi-phase single-core SF₆ cables was studied next. A program was developed to obtain the cable parameters for typical cable configurations. The amount of core current returning through its own sheath and through the earth were computed to illustrate the single phase cable representation for wave propagation in single core SF₆ cables.
URI: http://hdl.handle.net/2429/22543
Series/Report no. UBC Retrospective Theses Digitization Project [http://www.library.ubc.ca/archives/retro_theses/]
Scholarly Level: Graduate

This item appears in the following Collection(s)

Show full item record

All items in cIRcle are protected by copyright, with all rights reserved.

UBC Library
1961 East Mall
Vancouver, B.C.
Canada V6T 1Z1
Tel: 604-822-6375
Fax: 604-822-3893