| Autor: |
Zhan, Meng, Zhang, Lizhen, Chen, Xiuyun, Wang, Sheliang, Ma, Yan |
| Zdroj: |
International Journal of Civil Engineering; 20220101, Issue: Preprints p1-17, 17p |
| Abstrakt: |
Taking LW10B-383W/YT4000 sulfur hexafluoride circuit breaker produced by Henan Pinggao Electric Co. LTD as the prototype, a 1/5 scale test model was designed and manufactured based on the similarity theory. Considering the seismic response characteristics and structural form of this electrical equipment, this paper discussed the method of damping control of circuit breaker model using SMA cables. First, the shaking table tests were carried out for the Y-shaped circuit breaker model with and without control under three scaled seismic records, and the ABAQUS finite-element analysis model was established by automatic surface meshing method. Then, the seismic response analysis was finished along X and Y directions, and the comparison between the finite element and the test results was adopted to examine the availability of the proposed analysis model. Finally, the dynamic response of the model and the damping effect of SMA cables under z direction earthquake excitation were discussed using finite-element method. The results show the finite-element analysis results of Y-shaped circuit breaker model are in good agreement with the test results, and the SMA cables can effectively suppress seismic response of circuit breaker. When the peak ground acceleration (PGA) is 800 gal, the maximum acceleration suppression ratio of the end of arcing porcelain bushing is about 35% and the maximum displacement suppression ratio is about 32.5%. Meanwhile, the root stress of porcelain casing is also efficiently decreased, the inhibition rate of peak root stress of supports porcelain casing is about 40% for horizontal seismic action, and that of arcing porcelain bushing is about 30% for vertical seismic action. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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