Anti-impact performance of marine medium voltage AC vacuum circuit breaker structure

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (3) : 253-261.

HUANG Lei1, WANG Huamin1, TU Yu1, WANG Wei2, SHA Xinle1, XU Tingwei1

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Abstract

Anti-shock capability of marine electromechanical equipment is an important indicator for assessing the reliability in wartime. In this paper, the impact machine test and numerical simulation method were used to study the anti-shock capability of the breaker. The results show that the impact test has changed three-phase overtravel of breaker due to structural deformation. The high stress area of the model mainly exists in the bottom plate and supporting base, using numerical simulation method (frequency domain load) to improve the model structure, and the improved structure fulfil requirements.The transient response characteristics under the time domain load show that the vertical response is relatively sharp, the horizontal and vertical directions are relatively gentle, and the response has dramatic value in 0.015s, and tends to be stable at 0.15s. The model response results under the two loads are relatively close. The statistical results of the frequency domain load stress value are slightly larger than the time domain load. The frequency domain load simulation is more conservative. The research results are generally applicable to the anti-shock research of similar marine equipment.

Key words

marine circuit breaker / anti-shock capability / numerical simulation / the finite element analysis

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HUANG Lei1, WANG Huamin1, TU Yu1, WANG Wei2, SHA Xinle1, XU Tingwei1. Anti-impact performance of marine medium voltage AC vacuum circuit breaker structure[J]. Journal of Vibration and Shock, 2022, 41(3): 253-261

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