Risk assessment of dynamic thermal rating system

Future grids will be operated much closer to their security limits due to ever increasing power demand and difficulty in building new transmission corridors. Dynamic thermal rating (DTR) systems can be used to increase transmission line capacity without the conductor maximum operating temperature being exceeded. Hence, DTR systems are of significant interest to transmission system operators but there is a need to assess reliability of DTR systems. This paper presents a framework for this analysis that can be applied to different DTR system designs. The methodology intends to produce designs that are highly reliable and as such do not impose a significant risk to the transmission system.