Computer Simulation Of Some Lightning Effects On A Telecommunications Network

The aims of this work are to show some experimental results on induced voltages and currents on telecommunications cables and to compare with the computer simulation method adopted. The experiment was performed at the triggering lightning site of Cachoeira Paulista (Brazil). At this location a network of two telecommunications cables was setup. In the network, several configurations including effects of the strand wire and shielding were tested. On the other hand, the simulation was carried out using a quasi-TEM, frequency-domain, multiconductor transmission line theory that includes arbitrary linear networks illuminated by plane-wave or located generators. A comparison between the two methods was made for three different cases and the results were well obtained showing the method facilities.2452457Barker, P.P., Short, T.A., Eybert-Berard, A.R., Berlandis, J.P., Induced voltages measurements on an experimental distribution line during nearby rocket triggered lightning flashes (1996) IEEE Trans. on Power Delivery, 11 (2), pp. 980-995. , AprilRubinstein, M., Uman, M.A., Medelius, P.J., Thomson, E.M., Measurements of the voltage induced on an overhead power line 20 m from triggering lightning (1994) IEEE Trans. on Electromagnetic Compatibility, 36 (2), pp. 134-140. , MayVance, E.F., (1978) Coupling to Shielded Cables, pp. 108-176. , John Wiley & SonsRakov, V.A., Uman, M.A., Review and evaluaton of lightning return stroke models including some aspects of their application (1998) IEEE Trans. on Electromagnetic Compatibility, 40 (4). , NovemberKerroum, K., Benali, A., Fontaine, J., Time-domain analysis of multiconductor cables (1992) Proc. Electromagnetic Compatibility - From A Unified Region to A Unified World, Regional Symposium, pp. 2-5Paul, C.R., (1994) Analysis of Multiconductor Transmission Lines, , John Wiley & SonsArawal, A.K., Lee, K.M., Scott, L.D., Fowles, H.M., Experimental characterization of multiconductor transmission lines in the frequency domain (1979) IEEE Trans. on Electromagnetic Compatibility, 21, pp. 20-27. , FebruaryDjordjevic, A.R., Sarkar, T.K., Analysis of time response of lossy multiconductor transmission line networks (1987) IEEE Trans. on Microwave Theory and Techniques, MTT-35 (10), pp. 898-908. , October(2000) The Protection of Telecommunications Lines Using Metallic Conductors Against Direct Lightning Discharges, , International Telecommunication Union (ITU), Rec. K47, Genev