Investigation of Equivalent Current-Carrying Vibration Response Characteristics of GIL via Mechanical Excitation

HE Wenyu; YANG Xu; YANG Yuping; LONG Qi; SHENG Kang; LI Weiguo; YANG Zhenyu

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Investigation of Equivalent Current-Carrying Vibration Response Characteristics of GIL via Mechanical Excitation

更新时间：2026-09-29

- Investigation of Equivalent Current-Carrying Vibration Response Characteristics of GIL via Mechanical Excitation
- High VoltageApparatus (2026)
- 作者机构：
  
  1.广州大学工程抗震研究中心，广州510006
  2.中国南方电网有限责任公司超高压输电公司，广州510663
  3.广东省地震工程与应用技术重点实验室，广州510006
  4.工程抗震减震与结构安全教育部重点实验室，广州510006
- 作者简介：
- 基金信息：
  
  Guangdong Basic and Applied Basic Research Foundation(2023A1515010072;2022A1515110561)
- DOI：
  CLC：
- Received：08 July 2026，
  
  Revised：2026-09-09，
  
  Accepted：14 September 2026，
- 稿件说明：
移动端阅览
HE Wenyu, YANG Xu, YANG Yuping, et al. Investigation of Equivalent Current-Carrying Vibration Response Characteristics of GIL via Mechanical Excitation[J/OL]. High VoltageApparatus, 2026.
DOI：

HE Wenyu, YANG Xu, YANG Yuping, et al. Investigation of Equivalent Current-Carrying Vibration Response Characteristics of GIL via Mechanical Excitation[J/OL]. High VoltageApparatus, 2026. DOI：

摘要

针对气体绝缘金属封闭输电线路（GIL）在运行中因电动力长期处于微振动环境，导致接头触指发生磨损劣化的问题，当前基于大电流试验平台的研究受场地、传感器布置及经济成本等因素限制，难以灵活开展参数化研究。为此，基于分布参数体系理论推导等效原理，搭建了一种新型GIL机械激振器激励等效试验平台。在该平台上分别开展了通流无激振下的振动响应试验和连续长时间无通流激振下的振动响应试验。结果表明：GIL管线内部导电杆简化梁单元在集中简谐荷载与均布简谐荷载下的跨中振动响应特征一致；通流条件下，随负载电流增大，振动加速度值逐渐增大；新型激振方法下的振动响应与通流实测结果吻合。该新型激振方法在等效模型与原始模型相似性高同时动态响应由基频模态主导的结构下，可用于GIL管线振动响应特性及相关研究。

Abstract

To address the problem that the contact fingers of gas-insulated metal-enclosed transmission lines (GIL) are subject to wear degradation caused by the long-term micro-vibration environment induced by electrodynamic forces during operation

current studies based on high-current test platforms are constrained by site limitations

sensor placement

and economic costs

which hinder flexible parametric investigations. Therefore

an equivalent test platform employing a novel mechanical exciter for GIL was developed based on the equivalence principle derived from the theory of distributed-parameter systems. On this platform

vibration response tests were carried out under two scenarios: current-carrying without excitation

and long-duration excitation without current. The results indicate that the mid-span vibration response characteristics of a simplified beam element under concentrated harmonic load and uniformly distributed harmonic load are consistent. Under current-carrying conditions

the vibration acceleration exhibits a progressive increase with the load current. The vibration responses obtained by the novel excitation method are in good agreement with the measured results under current-carrying conditions. This novel excitation method can be applied to investigate the vibration response characteristics of GIL pipelines and related topics

as long as the structures where the equivalent model is highly similar to the original model and the dynamic response is dominated by the fundamental frequency mode.

关键词

Keywords

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