Mar 2013
Electricity Transmission
Acoustic Emissions from HV Overhead Conductors
Mar 2013
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 determined.

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 manage complaints.

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 alleviated.