Mechanical Defect Field Detection for Operational GIS Equipment Based on Vibration Signal Analysis

Zhang, Jie; Xu, Hui; Ding, Yilin; Dai, Xize; Hao, Jian

doi:10.1109/acpee51499.2021.9436830

Cited by 2 publications

(1 citation statement)

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“…With the long-term operation of GIS and the increasing service time, various problems have gradually emerged in the operation process of GIS. In addition to discharge-related faults, mechanical vibration faults are also one of the main causes of GIS faults [3]. Fault detection methods for GIS are mainly aimed at discharge-related faults, and there is currently no systematic research on the detection of abnormal mechanical vibration fault signals of GIS [4], [5].…”

Section: Introductionmentioning

confidence: 99%

Simulation Study on Mechanical Vibration Characteristics of GIS Bus Misalignment

Wang,

Zhao,

Zhang

et al. 2024

J. Phys.: Conf. Ser.

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Gas-insulated switchgear (GIS) has been widely used in power grid systems. The busbar is a crucial element within a GIS system, responsible for facilitating electrical connections between different GIS components. Any defects during manufacturing or improper installation procedures can lead to busbar misalignment, resulting in abnormal vibrations within the GIS. This study focuses on analyzing the mechanical vibration characteristics of GIS bus misalignment using a simulation model based on the finite element method for a 252kV GIS. When the busbar is misaligned and the conductor experiences an unbalanced force, it undergoes Coulomb forces at double the voltage frequency. Under normal or misaligned conditions, the conductor exhibits forced vibrations at the power frequency of 100Hz. However, when misalignment occurs, there is a coupling effect between electrodynamics and vibrations, causing the shell to display integer frequency vibration components.

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Section: Introductionmentioning

confidence: 99%