| dc.creator |
Damas, Jacqueline |
|
| dc.creator |
Mvungi, Nerey H. |
|
| dc.creator |
Manyahi, Mighanda J. |
|
| dc.date |
2016-03-04T12:23:29Z |
|
| dc.date |
2016-03-04T12:23:29Z |
|
| dc.date |
2007 |
|
| dc.date.accessioned |
2018-03-27T08:52:14Z |
|
| dc.date.available |
2018-03-27T08:52:14Z |
|
| dc.identifier |
J Damas, NH MVUNGI, MJ Manyahi, “Lightning Strike on Overhead Telephone Line: A Case Study of Tanzanian Telecommunications Company (TTCL)”, Proceedings of IEEE Africon 2007 International Conference, 26-28 Sept. 2007, Windhoek, Namibia, paper 687, 6 pgs |
|
| dc.identifier |
http://hdl.handle.net/123456789/607 |
|
| dc.identifier.uri |
http://hdl.handle.net/123456789/3439 |
|
| dc.description |
Conference proceedings |
|
| dc.description |
Recently there have been a growing concern over
the lightning caused damages, and disturbances on the consumer
operated equipments utilizing a telephone line. This concern has
been attributed by the fact that most of today’s consumers’
equipments comprise of electronic devices or microprocessor
controls that operate at low voltages, which can be superceded by
even distant lightning strike. Lightning strike can be either direct
or indirect, which causes induced voltage along the telephone
lines when it strikes on to the line or at a distance from the line.
In this paper the induced voltages on a conductor of 7m height
above the ground are calculated as a function of distance from
the strike point using Finite Difference Time Domain (FDTD)
method, as it could be a necessary data for deciding the possible
future protection scheme. It has been shown that finitely
conducting ground (lossy case) has pronounced effects for
lightning surge propagation and induced amplitude overvoltages
along the telephone line above the ground and can not be
neglected in the calculations of the induced overvoltages along
the line due to lightning strike compared to an infinitely
conducting ground (lossless case). |
|
| dc.description |
Sida-SAREC |
|
| dc.language |
en |
|
| dc.publisher |
IEEE |
|
| dc.subject |
Direct and Indirect lightning strikes, |
|
| dc.subject |
Finite Difference Time Domain (FDTD), |
|
| dc.subject |
Telegrapher’s equations, |
|
| dc.subject |
Transient ground impedance |
|
| dc.title |
Lightning Strike on Overhead Telephone Line: A Case Study of Tanzanian Telecommunications Company (TTCL) |
|
| dc.type |
Conference Proceedings |
|