Acoustic Emissions from HV Overhead Conductors
National Grid Electricity System Operator
National Grid TO Innovation Team
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Innovation Funding Incentive
The environmental impact of assets is a key concern to the community and
National Grid. One key aspect of this is the audible noise produced by plant.
Noise resulting from high voltage overhead lines is well studied, and models
exist for traditional conductors and conductor bundles. However, recent
experience of Matthew GAP conductor has demanded a rethink of the
fundamental, largely empirical models used.
This work will challenge existing models and create data on which to base new
models suitable for application on any form of conductor. This will allow novel
conductors to be deployed with a clear understanding of their acoustic and EM
noise emission characteristics.
The corrosion characteristics of new conductor materials will allow improved
asset management, and the implications of ageing on acoustic noise to be
Additional focus is now being directed towards developing a coating solution
which can be applied retrospectively to single spans as part of a strategy to
The key objective of the proposed research is aimed at understanding the
causes of excessive noise from overhead line conductors and how this might be