TDR (time domain reflectometry) has proven to be a very useful tool for preventive maintenance as well as for fault location. This paper points out the limitations of TDR techniques for very long cables, and illustrates how, with professional expertise, good results can be achieved even with very long cables, despite high pulse attenuation and dispersion and low pass effect. The paper highlights for the first time how accurate TDR distance measurements can be attained on very long cables despite the non-linear pulse propagation speed. This is particularly important in regards to the precise fault location on extra-long cables.
TDR Fingerprint on long Land and Submarine Power Cables / Manfred Bawart, Marco Brambilla, Tony Lucignano, Massimo Marzinotto, Giovanni Mazzanti. - ELETTRONICO. - (2023), pp. D7-4.1-D7-4.6. (Intervento presentato al convegno 11th International Conference on Insulated Power Cables (Jicable'23) tenutosi a Lione (Francia) nel 18-22 giugno 2023).
TDR Fingerprint on long Land and Submarine Power Cables
Giovanni Mazzanti
2023
Abstract
TDR (time domain reflectometry) has proven to be a very useful tool for preventive maintenance as well as for fault location. This paper points out the limitations of TDR techniques for very long cables, and illustrates how, with professional expertise, good results can be achieved even with very long cables, despite high pulse attenuation and dispersion and low pass effect. The paper highlights for the first time how accurate TDR distance measurements can be attained on very long cables despite the non-linear pulse propagation speed. This is particularly important in regards to the precise fault location on extra-long cables.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
