Motion Characteristics and Suppression Methods of Metal Particles on AC GIS Insulation Spacer Under Electro-thermal-fluid Multi-field Coupling

DONG Hao; WANG Tao; ZHAO Shugang; YANG Wenyu; REN Zhaojun

doi:10.13296/j.1001-1609.hva.2026.10.025

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Motion Characteristics and Suppression Methods of Metal Particles on AC GIS Insulation Spacer Under Electro-thermal-fluid Multi-field Coupling

Technical Discussion | 更新时间：2026-10-14

- Motion Characteristics and Suppression Methods of Metal Particles on AC GIS Insulation Spacer Under Electro-thermal-fluid Multi-field Coupling
- High Voltage Apparatus Vol. 62, Issue 10, Pages: 220-226(2026)
- 作者机构：
  
  国网德州供电公司，山东德州 253000
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.10.025
  CLC：
- Received：11 May 2026，
  
  Revised：2026-07-31，
  
  Published：16 October 2026
- 稿件说明：
移动端阅览
DONG Hao, WANG Tao, ZHAO Shugang, et al. Motion Characteristics and Suppression Methods of Metal Particles on AC GIS Insulation Spacer Under Electro-thermal-fluid Multi-field Coupling[J]. High Voltage Apparatus, 2026, 62(10): 220-226.
DOI：

DONG Hao, WANG Tao, ZHAO Shugang, et al. Motion Characteristics and Suppression Methods of Metal Particles on AC GIS Insulation Spacer Under Electro-thermal-fluid Multi-field Coupling[J]. High Voltage Apparatus, 2026, 62(10): 220-226. DOI： 10.13296/j.1001-1609.hva.2026.10.025.

摘要

高压交流气体绝缘金属封闭开关（HVAC GIS）设备内部触指等金属结构在工作运行过程中磨损易产生金属微粒与粉尘等污染物，残留的自由金属微粒在交流电场下荷电运动，附着在绝缘子表面易引发电场畸变与沿面放电等绝缘故障，影响电力系统安全稳定运行。文中基于高压交流GIS盆式绝缘子仿真模型，模拟了GIS设备内部电—热—流多物理场耦合分布，分析了绝缘子周围金属微粒的受力与运动特性，仿真研究了金属微粒释放位置与粒径尺寸对运动行为的影响。针对于金属微粒向绝缘子表面的吸附问题，提出了基于表面氟化的GIS绝缘子金属微粒抑制方法。基于缩比盆式绝缘子试样，通过实验方法对比了均匀绝缘子与氟化绝缘子的金属微粒运动特性，验证了氟化绝缘子对金属微粒的吸附抑制与交流闪络电压提升效果。

Abstract

During the operation of high-voltage alternating current gas-insulated switchgear(HVAC GIS)

such metal structures as contact fingers are subject to wear and tear

which can generate contaminants including metallic particles and dust. The residual free metallic particles become charged and move under the AC electric field. When they attach to the surface of insulating spacer

they are prone to cause electric field distortion and insulation failures such as surface flashover

thereby compromising the safe and stable operation of the power system.In this paper

based on a simultaion model of the insulating spacer in HVAC GIS

the electro-thermal-fluid multi-physica lfield coupling distribution inside GIS equipment is simulated. The force and motion characteristics of metallic particles around the spacer are analyzed

and the effects of release position and particle size on the motion behavior are studied through simulation. To address the issue of metallic particle adhesion to the insulating spacer surface

a suppression method based on surface fluorination of GIS insulating spacer is proposed. Based on the scaled insulating spacer samples

the motion characteristics of metal particles around the uniform and the fluorinated insultaing spacers are experimentally compared. The adsorption inhibition effect of fluorinated spacer on metal particles and the enhancement effect of AC flashover voltage are verified.

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references

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