On-line timedomainreflectometry measurements oftemperature variations ofanXLPE powercable
msra（2006）
摘要
Inthispaperan on-line timedomain reflectometry systemanda four-days measurements sequence arepresented. Detected pulsevelocity variations areattributed totemperature variations ofthe cable caused byaloadcycling. Thechanges inthepulse velocity are verified by propagation constant measurements of a powercableat different temperatures in300kHz- 500MHz frequency range. Also an influence of temperature dependent semiconducting screens andXLPE insulation tothe changes inthecable's capacitance isinvestigated.
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