Seismic failure risk analysis of ± 800 kV coupling filter circuit considering material strength deviation

Zhu, Wang; Xie, Qiang; Liu, Xiao

doi:10.1016/j.istruc.2022.12.022

Cited by 21 publications

(1 citation statement)

References 33 publications

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“…Substation equipment exhibits high vulnerability under earthquakes [1]. Most of the porcelain pillar electrical equipment in substation are connected by the flexible conductors, which will significantly affect the dynamic characteristics of the electrical equipment [2][3][4]. For substation equipment coupling system connected by flexible conductors under earthquake action, due to the different structural characteristics of the equipment on both sides of the flexible conductor connection, if the vertical span ratio of the flexible conductor cannot meet the requirements of seismic performance, the equipment on both sides will have strong interaction due to the existence of the flexible conductors, and the tension in the flexible conductors may lead to the damage of the equipment [5,6].…”

Section: Introductionmentioning

confidence: 99%

Seismic performance analysis of double electrical equipment system connected by flexible conductors

Wang,

Hong,

Min

et al. 2024

E3S Web Conf.

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Structural characteristics of electrical equipment are influenced by connected flexible conductors. In order to study the seismic performance of the double electrical equipment system (DEES) with flexible conductors, a simplified modeling method of the DEES with flexible conductors was proposed in this paper. The refined finite element model of the DEES with flexible conductors was established using ANSYS software. Its seismic response level was analyzed and compared with that of the standalone equipment. Besides, the impact of ground motion input was also investigated. The results show that the first two modal frequencies of the DEES will be reduced by the flexible conductor. The flexible conductor can reduce the seismic responses of the low-frequency equipment in the DEES, while it increases seismic responses of the high-frequency equipment. When the slack of the flexible busbar is greater than a critical value, the additional pulling force on the top of the equipment caused by the busbar can be kept at a low level, which is also related to the ground motion input.

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