高压电器2025，Vol.61Issue(10)：1-10,10.DOI:10.13296/j.1001-1609.hva.2025.10.001
机—电联合作用下GIS中片形金属微粒的运动行为与放电特性
Motion Behavior and Discharge Characteristics of Flake Metal Particles in GIS Under Electro-mechanical Coupling Effects
摘要
Abstract
Flake metal particles are a common potential defect within gas-insulated switchgear(GIS),where their mo-tion and discharge behavior under electric fields may lead to insulation failure,thereby posing a significant threat to equipment reliability.The current studies mainly focus on particle dynamics under electric fields alone,while the in-fluence of steady-state mechanical vibrations remains inadequately explored.In this paper a scaled GIS experimental platform capable of simultaneously applying high voltage and mechanical vibration is set up to investigate the motion patterns and discharge characteristics of flake metal particles under electro-mechanical coupling effects.Experimen-tal results indicate that the jumping and resting characteristics of the particles are significantly influenced by their mass and shape.Particles approaching a square geometry exhibit higher jumping electric field thresholds(0.80～1.1 kV/mm),whereas those with linear shapes demonstrate lower thresholds(0.55～0.70 kV/mm),with the effect of vi-bration on the jumping threshold being negligible.The particles,once jumping,exhibit three typical motion patterns and the motion is more intense with the increase of vibration amplitude.Discharge analysis reveals that as particle mass increases,its maximum apparent discharge magnitude has evolved from a linear to an exponential relationship.Moreover,coexistance of multiple flake particles can induce chain breakdown,resulting in a denser discharge pulse pattern.These findings reveal the impact of steady-state mechanical vibration on particle motion and discharge be-havior,providing an experimental basis for the assessment and mitigation of metal particle defects in GIS.关键词
机—电联合/GIS/片形金属颗粒/运动行为/放电特性Key words
electro-mechanical coupling/GIS/flake metal particles/motion behavior/discharge characteristics引用本文复制引用
赵莹莹,司文荣,傅晨钊,史天一,韩旭涛,李军浩..机—电联合作用下GIS中片形金属微粒的运动行为与放电特性[J].高压电器,2025,61(10):1-10,10.基金项目
国网上海市电力公司科技项目(520940230032).Project Supported by Science and Technology Program of State Grid Shanghai Electric Power Company(520940230032). （520940230032）
