Improved cable RTTR and early failure detection by combining DTS monitoring with distributed point sensing

Distributed Temperature Sensing (DTS) is well-established as an important component for monitoring and operating cables in HV grids and in offshore networks. To complement this, distributed sensing using passive fibre Bragg grating (FBG) sensors can provide remote point measurements of electrical parameters and temperature. This paper summarises work to combine these two technologies and utilise the strengths of each approach to optimise the functionality provided to operators.