Seismic failure risk assessment of electrical equipment considering different sorts of uncertainty

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (12) : 84-94.

HE Chang1,2，WANG Sheliang1，JIANG Liqiang2

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Abstract

Seismic failure risk is a critical parameter in the seismic design of electrical equipment. Considering the uncertainties of earthquake ground motion, structure and limited state of the electrical equipment structures and cognition, the process to assess the seismic vulnerability and seismic failure risk of the electrical equipment was proposed in this paper. The numerical example results indicated that different sorts of uncertainties have great influence on the seismic vulnerability and failure risk of the electrical equipment. In current status, the cognitive uncertainty of the electrical-equipment numerical models introduces a large standard deviation. The seismic fortification intensity, fortification peak ground acceleration and the seismic failure risk is not positive correlation. The different sorts of uncertainty should be considered in assessing the seismic vulnerability and failure risk of the electrical equipment.

Key words

electrical equipment / seismic vulnerability / seismic failure risk / different sorts of uncertainty / gas insulated switchgear（GIS）bushing

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HE Chang1,2，WANG Sheliang1，JIANG Liqiang2. Seismic failure risk assessment of electrical equipment considering different sorts of uncertainty[J]. Journal of Vibration and Shock, 2022, 41(12): 84-94

References

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