Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4923374 | Journal of Constructional Steel Research | 2017 | 13 Pages |
Abstract
Porcelain surge arrester is common in electrical substation and is vulnerable in earthquakes. In most cases, surge arrester needs to be mounted on the top of a steel supporting structure. The seismic response behaviors and failure modes of a steel supporting structure - surge arrester system are critical for the safety and reliability of substations. This paper aims at investigating such interaction effects on the seismic responses of surge arrester. Porcelain surge arresters in 220Â kV, 500Â kV, 750Â kV and 1000Â kV are considered in this study. Earthquake induced flexural stress and displacement are identified as key response parameters of a steel supporting structure - surge arrester system based on a full-scale test of 1000Â kV porcelain surge arrester. Analytical model of the system was then developed and verified by full-scale shaking table test. The effects of supporting structure on the bending moment and displacement responses are then investigated through time history analysis, modal analysis and a parametric study. Finally, a structural design procedure is proposed for selecting suitable value of flexural rigidity of the steel supporting structure.
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Sheng Li, Hing-Ho Tsang, Yongfeng Cheng, Zhicheng Lu,