The use of composite materials, e.g. fibreglass materials, in overhead transmission line systems is nothing new. Composite based insulators have been applied to transmission lines for over 30 years, mainly as suspension and post insulators and often as an option for special applications. Also towers and recently conductors based on composite materials are available at transmission levels. In this paper it is investigated which composite based solutions are available in connection with complete overhead line systems including insulators, towers and conductors. The components are reviewed with respect to solved and persisting known failures/problems of both mechanical and electrical nature. Major challenges related to extensive use of composite materials in an overhead line system are identified, as are possible benefits - both when using standard as well as customised composite components, e.g. insulating crossarms combining the electrical insulating properties of composites with their excellent mechanical strength. The paper will also cover specific design proposals, as investigated in a PhD project on composite based overhead line systems currently being carried out in collaboration between the Technical University of Denmark and the Danish TSO, Energinet.dk.
|Title of host publication||NORD-IS 09: Symposion Papers|
|Publication status||Published - 2009|
|Event||Nordic Insulation Symposion - Gothenburg, Sweden|
Duration: 1 Jan 2009 → …
|Conference||Nordic Insulation Symposion|
|Period||01/01/2009 → …|