A Probabilistic Wind & Ice Map for the UK
National Grid Electricity System Operator
National Grid TO Innovation Team
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Innovation Funding Incentive
Currently UK electricity network owners have adopted BSEN50341 and
BSEN50423 standards using either the general approach to line design
(BS8100) or the deterministic empirical approach using fixed wind/ice
parameters. The latter approach has been used for the design of NGs
exiting OHL network. CENELEC standards allow alternative line designs based
on probabilistic methods if evidence can be given of wind/ice loads. The
COST727 project will provide the modelling tools necessary to develop a
wind/ice map of the UK which will relate weather data to conductor ice loads.
This will allow return periods of wind/ice loads to be evaluated on a geographical
basis. Future UK line design can follow these new wind/ice loads which are
expected to be less onerous than those predicted by BS8100, produced in 1986
mainly for the design of communication towers.
The Main objective of the project is to provide a probabilistic UK wind/ice map to be used in the design of Overhead Lines (OHL) using BSEN 50341/50423.