SHAKING TABLE TESTS OF ULTRA-HIGH-VOLTAGE TRANSFORMER MODELS WITH NONLINEAR VIBRATION ISOLATION DEVICES

LIU Zhenlin; CHENG Yongfeng; LU Zhicheng; ZHANG Xiaojun; ZHU Zhubing; ZHANG Shujun

doi:10.13204/j.gyjzG21052708

Volume 51 Issue 11

Mar. 2022

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LIU Zhenlin, CHENG Yongfeng, LU Zhicheng, ZHANG Xiaojun, ZHU Zhubing, ZHANG Shujun. SHAKING TABLE TESTS OF ULTRA-HIGH-VOLTAGE TRANSFORMER MODELS WITH NONLINEAR VIBRATION ISOLATION DEVICES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 19-24. doi: 10.13204/j.gyjzG21052708

Citation:

LIU Zhenlin, CHENG Yongfeng, LU Zhicheng, ZHANG Xiaojun, ZHU Zhubing, ZHANG Shujun. SHAKING TABLE TESTS OF ULTRA-HIGH-VOLTAGE TRANSFORMER MODELS WITH NONLINEAR VIBRATION ISOLATION DEVICES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 19-24. doi: 10.13204/j.gyjzG21052708

Citation:

LIU Zhenlin, CHENG Yongfeng, LU Zhicheng, ZHANG Xiaojun, ZHU Zhubing, ZHANG Shujun. SHAKING TABLE TESTS OF ULTRA-HIGH-VOLTAGE TRANSFORMER MODELS WITH NONLINEAR VIBRATION ISOLATION DEVICES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 19-24. doi: 10.13204/j.gyjzG21052708

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SHAKING TABLE TESTS OF ULTRA-HIGH-VOLTAGE TRANSFORMER MODELS WITH NONLINEAR VIBRATION ISOLATION DEVICES

doi: 10.13204/j.gyjzG21052708

1. China Electric Power Research Institute,Beijing 100055, China;
2. State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310007, China

Received Date: 2021-05-27
Available Online: 2022-03-29

Abstract

Abstract

Based on the theory of nonlinear quasi-zero stiffness, the horizontal and bidirectional directional seismic isolators were desighed and a shaking test on scaled ultra-high-voltage(UHV) transformer models with vibration isolation device was conducted. The peak ground accelevation of 0.4 g, 0.8 g, 1.2 g and 1.6 g in the tests, when the seismic waves were isolated by seismic isolators, the peak ground acceleration of seismic waves acting on the bottom of the UHV transformer model was reduced by 61.53% to 90.00%, and the spectral response curves of seismic waves were reduced, especially in the low frequency range where the ground shaking energy was high. In the contrast tests of the peak acceleration of 0.4 g and 0.8 g, the maximum stress of high-voltage bushings of UHV transformers decreased by 85.77% and 91.75% as the isolation devices were installed. The results of acceleration and strain showed that the isolation devices had significant seismic isolation effect, and the effectiveness of the nonlinear quasi-zero stiffness theory in seismic isolation design was proven.
- UHV transformer,
- seismic response,
- shaking table test,
- isolation device,
- scaled model

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References(16)

References

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