Design and analysis of tensegrity power lines
2012 (English)In: International Journal of Space Structures, ISSN 0956-0599, Vol. 27, no 2-3, 139-154 p.Article in journal (Refereed) Published
Overhead transmission power lines have undergone very small aesthetic and technical changes over time. Studies on mitigation of the electromagnetic field shows that utilizing a helix configuration is an effective way to reduce the electromagnetic field. This study proposes to use tensegrity structures as power lines. Tensegrity structures are composed of tension and compression elements in equilibrium. Modules, simple units with a certain rotation, are connected together to design of overhead power lines with considerable electromagnetic field reduction. A form-finding method enables the design of various free-form configurations. A parametric study is performed to investigate the influence of the module dimensions on the stiffness of the power line. A design algorithm was used for determining the optimum size of elements and the pre-stress level. The selected baseline structure was able to tolerate the wind and ice loads in severe conditions with a 50 times reduction in electromagnetic field. Finally a sensitivity analysis is performed to show the effects of element loss or damage.
Place, publisher, year, edition, pages
2012. Vol. 27, no 2-3, 139-154 p.
electromagnetic field, form-finding, parametric study, power lines, sensitivity analysis, tensegrity, wind and ice loads, Ice loads, Tensegrities, Design, Electromagnetic fields, Electric lines
IdentifiersURN: urn:nbn:se:kth:diva-100529DOI: 10.1260/0266-3511.27.2-3.139ScopusID: 2-s2.0-84863517487OAI: oai:DiVA.org:kth-100529DiVA: diva2:543810
QC 201208102012-08-102012-08-092012-09-04Bibliographically approved