Jun 2008
Electricity Transmission
Composite Cross-Arms Study
Jun 2008
Feb 2013
National Grid Electricity Transmission and Scottish Hydro Electric Transmission
Dave Clutterbuck & Mike Fairhurst
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Network Innovation Allowance
Overhead Lines
The scope of this project is to develop a composite crossarm that can be used for uprating Overhead Line routes without replacing existing towers with taller more visually instrusive ones. This work starts as basic, initial research, and will give a final solution, suitable for use on suspension towers in GB. It will also identify what further work needs to be done in order to address the issues associated with turning corners, and use on tension towers.

The objective of this project is to produce a crossarm made of composite materials, that is suitable for use on the 400kV transmission system on a suspension tower.

  • Production of a report detailing the feasibility of the use of composite crossarms on 275kV and 400kV overhead line towers

  • Production of Case Study Specification

  • Production of Techno-Economic Benefit Analysis

  • Resolution of Technical Barriers

  • Manufacture of Prototype

  • Crossarm mechanical testing

  • Crossarm electrical and environmental trials

  • Ancilliary system design

  • Production of final prototype drawings

  • Development of crossarm solution, suitable for deployment onto the 400kV system

  • Manufacture of crossarms, including type test

  • Installation of crossarms at 400kV, including 4 x 6 month performance reports

  • Final PhD thesis.