不同着火位置对高压开关柜火灾影响的数值研究  

Computational Study of the Effect of Ignition Positions on the Fire Hazard for High⁃voltage Switchgear Cabinet

作　　者：张佳庆 祝现礼[1,2,3,4] 过羿 尚峰举 ZHANG Jiaqing;ZHU Xianli;GUO Yi;SHANG Fengju(State Grid Anhui Electric Power Research Institute,Hefei 230601,China;Anhui Province Key Laboratory of Electric Fire and Safety Protection,Hefei 230022,China;State Grid Laboratory of Fire Protection for Transmission and Distribution Facilities,Hefei 230601,China;Fire Protection Technology Center of State Grid Corporation of China,Hefei 230601,China)

机构地区：[1]国网安徽省电力有限公司电力科学研究院,合肥230601 [2]电力火灾与安全防护安徽省重点实验室,合肥230022 [3]国家电网公司输变电设施火灾防护实验室,合肥230601 [4]国家电网有限公司消防技术中心,合肥230601

出　　处：《高压电器》2024年第2期78-84,共7页High Voltage Apparatus

基　　金：国网安徽省电力有限公司科技项目资助(B3120520000D)。

摘　　要：基于流体动力学计算软件文中研究了不同着火位置对高压开关柜火灾的影响,分析了柜内温度场、无量纲温度因子、烟气分布及总热释放率火灾特征参量。计算结果表明,手车室发生火灾时最高温度低于电缆室或母线室最高温度,且不同着火位置下顶壁或侧壁无量纲温度因子差异明显,可用来进行早期火灾安全预警的诊断手段。烟气场和总热释放速率分布表明,电缆室和手车室着火时,其烟气可充满整个高压开关柜柜体,而母线室着火时烟气仅充满整个母线舱室。另外,电缆室火灾具有较大的总热释放率,因其相邻手车室可燃构件也被引燃进而释放更多的热量。通过文中的研究结果,可进一步认识和了解高压开关柜火灾蔓延发展趋势,也可为高压开关柜的早期安全预警提供技术和理论支撑。In this paper,the influence of different ignition positions on the fire of high⁃voltage switchgear cabinet is studied on the basis of fluid dynamics calculation software,and the fire characteristic parameters of temperature field,dimensionless temperature factor,soot distribution and total heat release rate inside the cabinet are analyzed.The calculation results show that,in case of fire of handcart compartment,the maximum temperature is lower than that of the cable compartment or busbar compartment and,moreover,the dimensionless temperature of top or side wall at different fire positions has obvious difference,which can be used as the diagnosis means for the early fire safe⁃ty warning.The distributions of soot and total heat release rate also show that,in case of fire in the cable compartment and handcart compartment,the soot can be filled fully in the complete high⁃voltage switchgear cabinet.While,in case of fire in the busbar compartment,the soot is only filled fully the busbar compartment.In addition,the fire of cable compartment has higher total the released rate and more heat is released due to the ignition of the combustible ele⁃ment of the adjacent handcart compartment.The research result in this paper can not only recognize and understand the development trend of fire spread of high⁃voltage switchgear cabinet,but also provide technical and theoretical support for the early safety warning of the high⁃voltage switchgear cabinet.

关 键 词：高压开关柜 火灾 着火位置 火灾安全 火焰热释放速率 

分 类 号：TM591[电气工程—电器] X932[环境科学与工程—安全科学]