Paper Title:
Shaking Table Experimental Study on Damage Mechanism of the Disconnecting Switch under Seismic Excitation
  Abstract

The efficiency of the energetic network is a very import safety issue in the region experienced by the earthquake. High voltage disconnecting switches are important elements of the energetic infrastructure used to separate electric circuits (i.e. during repairs), which should not be damaged remaining fully operational. The aim of the paper is to show the results of the shaking table experimental investigation focused on damage mechanism of a high voltage disconnecting switch under seismic excitation. The real example of the two-column pantograph-type disconnecting switch was considered in the study. First, the tests were carried out by exciting the unit with the sweep-sine function. Based on the results, the structural dynamic properties of undamaged structure (natural frequencies, damping ratios) could be determined. Then, the so called rumbling seismic tests were conducted in order to determine the seismic strength of disconnecting switch according to the standards PN-EN 60068-3-3. After each experiment, the sweep-sine test was carried out so as to check the decrease in the natural frequencies of the unit. The results of the study show that the lower parts of the columns, which serve as isolators, are the most critical locations of the disconnecting switch considered. The unit was damaged due to failure of one of the rotational mechanisms installed at the bottom of columns.

  Info
Periodical
Key Engineering Materials (Volumes 488-489)
Edited by
Z. Tonković and M.H. Aliabadi
Pages
351-354
DOI
10.4028/www.scientific.net/KEM.488-489.351
Citation
P. Dembowski, R. Jankowski, "Shaking Table Experimental Study on Damage Mechanism of the Disconnecting Switch under Seismic Excitation", Key Engineering Materials, Vols. 488-489, pp. 351-354, 2012
Online since
September 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yang Qi Huang, Jian Hua Zhang, Xin Yi Lu, Nian Liu
Chapter 6: Smart Grid Technology
Abstract:As an important part of smart grid, smart substation is the acquisition source of operating data and command execution unit, and also acts as...
453
Authors: Yang Qi Huang, Nian Liu, Jian Hua Zhang
Chapter 21: Energy and Power Engineering
Abstract:With the rapid development of city construction, contradiction between power supply and demand becomes more marked, so the idea of building...
2850
Authors: Ke Huang, Xin Wang, Yi Hui Zheng, Li Xue Li, Yan Ling Liu
Chapter 8: Electrical Theory and Power Electronics
Abstract:To analyze the influence of distribution network with grid-connected photovoltaic (PV) generation on the power supply reliability, in this...
956