Lightning Strike on Overhead Telephone Line: A Case Study of Tanzanian Telecommunications Company (TTCL)

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dc.creatorDamas, Jacqueline
dc.creatorMvungi, Nerey H.
dc.creatorManyahi, Mighanda J.
dc.date2016-03-04T12:23:29Z
dc.date2016-03-04T12:23:29Z
dc.date2007
dc.date.accessioned2018-04-18T11:49:54Z
dc.date.available2018-04-18T11:49:54Z
dc.descriptionConference proceedings
dc.descriptionRecently 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equipments comprise of electronic devices or microprocessor controls that operate at low voltages, which can be superceded by even distant lightning strike.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.descriptionSida-SAREC
dc.identifierJ 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.identifierhttp://hdl.handle.net/123456789/607
dc.identifier.urihttp://hdl.handle.net/123456789/10308
dc.languageen
dc.publisherIEEE
dc.subjectDirect and Indirect lightning strikes,
dc.subjectFinite Difference Time Domain (FDTD),
dc.subjectTelegrapher’s equations,
dc.subjectTransient ground impedance
dc.titleLightning Strike on Overhead Telephone Line: A Case Study of Tanzanian Telecommunications Company (TTCL)
dc.typeConference Proceedings

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