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- W2357942007 abstract "500 kV zinc oxide lightning arresters are easily damaged under the strong earthquake action not only because the centre of gravity of the arresters is high so the flexural deformation taking up more proportion in all kinds of deformation under the earthquake action,but also because the porcelain column insulator being made of brittle materials are only subjected to limited bending moment.To avoid the damage on the equipments under the strong earthquake action,a new type lead dampers is installed at the bottom of the equipments.To investigate the damping effect of the lead dampers,a three-dimensional finite element model of arresters is established.The results of the analysis show that the lead dampers are well functioning,limiting the relative displacement and absolute acceleration at the top of bushing.There is a above reduction of 61% in the maximum stress of bottom porcelain pipe;and the stronger the input ground motion is,the larger the reduction will be.Moreover,the lead dampers can provide a rather initial stiffness to the arresters.It is proved that the three dimensional model of lightning arresters is reasonable by comparing the results of calculation with the results of testing." @default.
- W2357942007 created "2016-06-24" @default.
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- W2357942007 date "2011-01-01" @default.
- W2357942007 modified "2023-09-27" @default.
- W2357942007 title "Seismic behavior of 500 kV zinc oxide lightning arresters with new typelead damper" @default.
- W2357942007 hasPublicationYear "2011" @default.
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