Finite Element Simulation Research on SF<sub>6</sub> Gas Leakage Distribution Characteristics in GIS

NING Zida; XU Zhiniu; ZHAO Lina; ZANG Yulai; ZHAO Lijuan; WANG Zhengyang

doi:10.13296/j.1001-1609.hva.2025.09.004

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Finite Element Simulation Research on SF₆ Gas Leakage Distribution Characteristics in GIS

Research & Analysis | 更新时间：2025-09-05

- Finite Element Simulation Research on SF₆ Gas Leakage Distribution Characteristics in GIS
- High Voltage Apparatus Vol. 61, Issue 9, Pages: 24-34(2025)
- 作者机构：
  
  1.华北电力大学电气与电子工程学院，河北　保定　071003
  2.纽卡斯尔大学电气与电子工程学院，英国　纽卡斯尔　NE17RU
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(62171185;62273146);Fundamental Research Funds for the Central Universities(2021MS072)
- DOI：10.13296/j.1001-1609.hva.2025.09.004
  CLC：
- Received：07 March 2025，
  
  Revised：20 June 2025，
  
  Published：16 September 2025
- 稿件说明：
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NING Zida, XU Zhiniu, ZHAO Lina, et al. Finite Element Simulation Research on SF₆ Gas Leakage Distribution Characteristics in GIS[J]. High voltage apparatus, 2025, 61(9): 24-34.
DOI：

NING Zida, XU Zhiniu, ZHAO Lina, et al. Finite Element Simulation Research on SF₆ Gas Leakage Distribution Characteristics in GIS[J]. High voltage apparatus, 2025, 61(9): 24-34. DOI： 10.13296/j.1001-1609.hva.2025.09.004.

摘要

为了基于红外辐射检测技术能评估设备泄漏的严重程度，文中对GIS气体泄漏进行了仿真模拟，用以研究设备泄漏相关参数与泄漏气体分布特性之间的关系。文中基于

形式的湍流模型建立了GIS中SF

气体泄漏的流体场有限元仿真模型，采用自由四面体对模型进行了剖分和求解，并研究了网格划分对仿真结果的影响，确定了合理的剖分细度。基于建立的模型，研究了不同体积、壁厚、泄漏孔径、泄漏位置和气室压力情况下泄漏气体的分布特性。结果表明该仿真模型可以有效反映GIS中SF

泄漏气体的整体浓度分布情况，同时还能准确反映泄漏孔径、泄漏位置与气室压力的影响，其中不同泄漏孔径下SF

泄漏气体截面积最大值与距离的关系趋向于指数函数；不同气室压力下SF

泄漏气体截面积最大值与距离的关系趋向于线性函数。上述研究可以为基于红外成像检测的GIS泄漏情况分析提供参考。

Abstract

For assessing the severity of equipment leakage based on infrared radiation detection technology

in this paper the gas leakage of GIS is simulated to study

the relationship between related leakage parameters of the equipment and leakage gas distribution characteristics. In this paper

based on the

turbulence mathematical model

a finite element simulation model of the fluid field of SF

gas leakage in GIS is established. The model is divided and solved by using the free tetrahedron method and the influence of the mesh division on the simulation result is studied so to determine the reasonable subdivision. Based on the established model

the distribution characteristics of the leaked gas under different volumes

wall thicknesses

leakage aperture

leakage positions and gas compartment pressure are studied. The results show that the simulation model can effectively reflect the integral concentration distribution of SF

leakage gas in GIS and

at the same time

can also accurately reflect the influence of leakage aperture

leakage position and gas compartment pressure

in which

the maximum cross-sectional area of SF

leakage gas and the distance under different leakage aperture tends to be an exponential function；the the maximum cross-sectional area of SF

leakage gas and the distance of pressure of different gas compartments tends to be a linear function. The above-mentioned research can provide a reference for GIS leakage analysis based on the infrared imaging detection.

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Finite Element Simulation Research on SF6 Gas Leakage Distribution Characteristics in GIS

DOI：10.13296/j.1001-1609.hva.2025.09.004

摘要

Abstract

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references

Finite Element Simulation Research on SF₆ Gas Leakage Distribution Characteristics in GIS