电器与能效管理技术 ›› 2025, Vol. 0 ›› Issue (6): 17-21.doi: 10.16628/j.cnki.2095-8188.2025.06.003

• 研究与分析 • 上一篇    下一篇

空气绝缘开关柜电缆室燃弧压力升计算及分析

郭庆   

  1. 上海电器科学研究所(集团)有限公司, 上海 200063
  • 收稿日期:2025-04-06 出版日期:2025-06-30 发布日期:2025-08-11
  • 作者简介:郭 庆(1993—),男,工程师,主要从事中低压成套电器设计相关研究。
  • 基金资助:
    普陀区科技研发平台项目(2022SN03)

Calculation and Analysis of Arc Pressure Rise in AIS Cable Compartment

GUO Qing   

  1. Shanghai Electrical Apparatus Research Institute(Group) Co.,Ltd., Shanghai 200063, China
  • Received:2025-04-06 Online:2025-06-30 Published:2025-08-11

摘要:

基于热传导微分方程、流体运动控制方程及理想气体方程,采用内热源方式将电弧功率加载至流体运动控制方程,建立开关柜电缆室燃弧压力计算的数值模型。在电缆室接线铜排处发生燃弧故障时,对电缆室三维气流场进行数值计算,指出燃弧初期电缆室内的压力升分布规律及压力冲击波的传播特性。最后,基于GB/T 3906—2020对产品进行了40 kA、1 s的内燃弧试验,结果表明压力场数值计算结果和试验结果较为吻合,误差满足工程实际需求,为后续同类产品的设计及优化提供了理论支撑与设计参考。

关键词: 开关柜, 电弧, 压力计算, 内燃弧试验

Abstract:

Based on the heat conduction equation, the fluid governing equation and the ideal gas equation, the arc power is loaded into the control equation of fluid motion by the internal heat source method. A numerical model for calculating the arc pressure in the cable compartment of switchgear is established. When an arc fault occurs at the copper busbar in the cable compartment, the three-dimensional gas flow field in the cable compartment is numerically calculated. The pressure rise distribution law and the propagation characteristics of the pressure shock wave in the cable compartment during the initial stage of the arc are pointed out. Finally, based on GB/T 3906—2020, a 40 kA, 1 s internal arc test is conducted on the product, The results show that the numerical calculation results of the pressure field are in good agreement with the test results. The error meets the engineering requirements. This provides theoretical support and design reference for the subsequent design and optimization of similar products.

Key words: switchgear, arc, pressure calculation, internal arc test

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