空气绝缘开关柜电缆室燃弧压力升计算及分析

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关键词：开关柜；电弧；压力计算；内燃弧试验

中图分类号：TM591 文献标志码：A 文章编号：2095-8188（2025）06-0017-05

DOI：10.16628/j. cnki.2095-8188.2025.06.003

Calculation and Analysis of Arc Pressure Rise in AIS Cable Compartment

GUO Qing

[Shanghai Electrical Apparatus Research Institute（Group） Co.，Ltd.，Shanghai 2OOO63，China]

Abstract：Basedon the heatconduction equation，the fluid governing equationand the ideal gas equation，the arcpoweris loaded into thecontrolequationoffluid motionbytheinternal heat source method.Anumerical model for calculating thearc presure in the cable compartmentof switchgear is established.When anarcfault occurs at thecopperbusbarinthecablecompartment，thethre-dimensionalgas flow fieldinthecablecompartmentis numerically calculated.The pressure rise distribution lawand the propagation characteristicsof the pressre shock wave inthe cable compartment during the initial stage of thearc are pointed out.Finally，based on GB/T 3906- 2020，a 40kA ，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 forthe subsequent design and optimizationof similar products.

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

0 引言

空气绝缘开关柜具有操作方便、运行可靠、产品规格多样等优点，在电力系统中广泛应用。（剩余5456字）