Apr 2012
Electricity Transmission
Dynamic Ratings for improved Operational Performance (DROP)
Apr 2012
Aug 2016
National Grid Electricity Transmission
Dan Morrice
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Network Innovation Allowance
This issue is to improve on providing a concise cable rating sheet as part of the CUP package which can be readily used by Network Operations. While this approach works well where the level of load to be transferred is known in advance, it provides for only a limited number of rating combinations based on a series of assumptions about the cable system thermal environment. Given the increasing variability of the UK climate, coupled with the trend towards higher generation of electrical energy from renewable sources, this may not always lead to the best utilisation of a cable asset as its true power transfer capability over periods of 24 hours or less may be under-estimated through this traditional approach.

The objective for this project is to investigate, develop and experimentally validate methods for the calculation of dynamic (real time) cable circuit ratings within the transmission network, to investigate potential deployment scenarios for such methods within the National Grid network and to determine the potential benefits of using such systems as the penetration of intermittent renewable generation grows within the network. 

The project is successful if we build on the already successful record of work relating to modeling of HV cable systems at the University of Southampton.