变电站软导线——电气设备耦联体系地震响应模拟及特征分析  

Simulation and Characteristic Analysis of Seismic Response of Coupling System of Flexible Conductors and Electrical Equipment in Substation

作　　者：李强 禹晋云[2] 李光辉 杨旭 LI Qiang;YU Jinyun;LI Guanghui;YANG Xu(CSG Extra High Voltage Power Transmission Company,Dali Bureau,Yunnan Dali 671000,China;China Southern Power Grid Co.,Ltd.,Guangzhou 510000,China;Electric Power Research Institute of EHV Power Transmission Company,Guangzhou 510000,China)

机构地区：[1]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 [2]中国南方电网有限责任公司,广州510000 [3]超高压输电公司电力科研院,广州510000

出　　处：《高压电器》2025年第4期63-71,共9页High Voltage Apparatus

摘　　要：变电站电气设备在震中可能遭到严重损坏。先前大部分研究均针对单体设备或单跨耦联体系的地震性能,而在实际情况中,通过软导线耦联的多个设备将影响其余设备的地震响应。因此,提出了一种基于运动方程的数值解法,用于多跨软导线—单体设备耦联体系的地震响应。为了该方法的准确性,构建了相应的五跨包含6个不同电气设备的耦联体系有限元模型,并对比了两者的地震响应分析结果,随后研究了设备频率和软导线垂跨比对耦联体系地震响应的影响。分析表明:该数值方法与有限元模型计算结果高度吻合,峰值加速度和相对位移的最大相对误差的绝对值分别为9.85%和10.64%;导线张力和设备地震响应与相邻设备频率比呈正相关关系。该方法对于改进变电站电气设备抗震设计和配置具有实际意义。The electrical equipment in substation may be severely damaged in the seismic condition.Most of previ-ous studies have focused on the seismic performance of single devices or single-span coupled systems,but in prac-tice,multiple devices coupled through flexible wires will affect the seismic response of other equipment.Therefore,a kind of numerical solution based on motion equation is proposed for the seismic response of multi-span flexible wire-single device coupling system.For the accuracy of the method,a corresponding finite element model of the five-span coupling system containing six different electrical equipment is constructed,and the seismic response analysis re-sults of both are compared.Then,the effects of equipment frequency and the vertical span ratio of the flexible wire on the seismic response of the coupling system are studied.The analysis shows that the numerical method is in highly agreement with the calculation result of the finite element model,and the absolute values of the maximum relative er-rors of peak acceleration and relative displacement are 9.85%and 10.64%,respectively,and the wire tension and seismic response of equipment as well as the frequency ratio of adjacent equipment are positively correlated.This method has practical significance for improving the seismic design and configuration of electrical equipment at sub-station.

关 键 词：电气设备 地震响应 多跨耦联体系 软导线 数值模拟 有限元模型 设备频率 垂跨比 

分 类 号：TU352.11[建筑科学—结构工程]