Analysis of Coupled Structural Responses of Circuit and Equipment in Converter Substation Under Seismic Action

ZHANG Shihong; JIANG Weipeng; WANG Jinxiong; LI Guanghui

doi:10.13296/j.1001-1609.hva.2025.04.010

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Analysis of Coupled Structural Responses of Circuit and Equipment in Converter Substation Under Seismic Action

Earthquake Disaster Mitigation and Emergency Responses of Substation System Under Extreme Conditions | 更新时间：2025-05-25

- Analysis of Coupled Structural Responses of Circuit and Equipment in Converter Substation Under Seismic Action
- High Voltage Apparatus Vol. 61, Issue 4, Pages: 83-90(2025)
- 作者机构：
  
  中国南方电网有限责任公司超高压输电公司大理局，云南　大理　 671000
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2025.04.010
  CLC：
- Received：10 October 2024，
  
  Revised：19 January 2025，
  
  Published：16 April 2025
- 稿件说明：
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ZHANG Shihong, JIANG Weipeng, WANG Jinxiong, et al. Analysis of Coupled Structural Responses of Circuit and Equipment in Converter Substation Under Seismic Action[J]. High voltage apparatus, 2025, 61(4): 83-90.
DOI：

ZHANG Shihong, JIANG Weipeng, WANG Jinxiong, et al. Analysis of Coupled Structural Responses of Circuit and Equipment in Converter Substation Under Seismic Action[J]. High voltage apparatus, 2025, 61(4): 83-90. DOI： 10.13296/j.1001-1609.hva.2025.04.010.

摘要

地震作用对特高压换流站设备的影响十分显著，由于设备之间通过母线和其他部件相互连接，设备的耦联效应会显著改变其地震响应特性。以特高压换流站中的典型交流滤波器回路为研究对象，建立了精细化有限元模型，对耦联回路的动力学特性进行了模态分析与地震时程分析，探讨了不同地震动下设备和母线的耦联响应特性。研究表明，与单独设备相比，耦联回路中的设备表现出不同的动态特性，耦合效应对设备的位移和应力响应有显著影响，某些关键设备如电容器和断路器的位移与应力响应较大。基于分析结果，文中提出了具体的抗震设计建议，旨在减小耦合效应带来的不利影响，提升换流站设备的抗震性能与安全性。

Abstract

The impact of seismic action on ultra-high voltage (UHV) converter station equipment is significant. The coupling effect of equipment can greatly change their seismic response characteristics due to the connection between equipment via through busbar and other parts. The typical AC filter circuit in a UHV converter station is taken as an example

a refined finite element model is set up to perform the modal analysis for the dynamic characteristics of the coupled circuit and seismic time-history analysis. The coupling response characteristics of equipment and busbar under different seismic excitation are explored. The study shows that

compared to the individual equipment

the equipment in the coupled circuit exhibits different dynamic behaviors

and the coupling effect has significant influence on the displacement and stress responses of the equipment. The displacement and stress response of some such key components as capacitors and circuit breakers is bigger. Based on the analysis result

a specific seismic design recommen-dations are proposed in this paper so to mitigate the adverse influence of coupling effect and enhance the seismic performance and safety of equipment of converter station.

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