Classification of Wind Exposed Overhead line Spans
Reference Number
NIA_NGET0181
Title
Classification of Wind Exposed Overhead line Spans
Status
Completed
Energy Categories
Other Power and Storage Technologies(Electricity transmission and distribution)
Research Types
Applied Research and Development
Science and Technology Fields
ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering)
ENVIRONMENTAL SCIENCES (Earth Systems and Environmental Sciences)
ENVIRONMENTAL SCIENCES (Earth Systems and Environmental Sciences)
UKERC Cross Cutting Characterisation
Not Cross-cutting
Principal Investigator
Project Contact
National Grid Electricity Transmission
National Grid Electricity Transmission
Award Type
Network Innovation Allowance
Funding Source
Ofgem
Start Date
01 February 2016
End Date
01 April 2017
Duration
14 months
Total Grant Value
£250,000
Industrial Sectors
Power
Region
London
Programme
Network Innovation Allowance
Web Site
Objectives
To better understand how wind forces affect our OHL system and the overall risk to our asset portfolio of short term and longer term damage. The outputs of this research project will provide the industry: Confidence level in the technique is established. Impact of environment re-classification is demonstrated. Potential for new environment categorizations is discussed with recommendations.
Abstract
A key parameter affecting the deterioration of ACSR Zebra overhead lines is their location, mainly in terms of environmental conditions, which lead to vibration. At present, the environment is classified into three categories, high medium and low risk. This classification is chosen based on altitude and proximity to coastal areas. This project aims to review this categorization and attempt to develop a more refined methodology to determine the degradation rate of overhead lines based on their physical location. The overhead line environment will be modelled to understand the impact. Four characteristics in particular will be analysed: Wind Speed - Higher than average for the section Wind Direction - Spans perpendicular to prevailing wind Turbulence Intensity - Low Wind Shear - Low The technical method proposed in this project models characteristics such as; turbulence, wind direction and extreme wind and ice loading events, to provide a more accurate assessment of the likelihood of conditions giving rise to conductor motion.Note : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above
Data
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Projects
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Publications
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Added to Database
07/06/18
