摘要
近年来发生了多起高压开关柜火灾事故,传统开关柜灭火通过人工方式灭火,存在灭火效率低、人员风险大等问题。现有开关柜自动灭火装置研究存在引入电场畸变、启动阈值不清及灭火剂选择不当等问题。为解决上述问题,文中开展了高压开关柜故障起火自动灭火系统研究。优化设计了了灭火剂喷头结构,降低了最大场强,避免了绝缘击穿风险。进行了真型开关柜火灾模拟试验,基于试验过程中温度场分布确定了灭火装置启动阈值。探索了灭火剂类型与用量,确定了合理的高压开关柜灭火剂设置方案。建立了完整的高压开关柜自动灭火系统,试验结果表明文中所提出灭火系统快速有效。
In recent years,multiple fire accidents of high voltage switchgear cabinet have happened.The fire extin-guishing of traditional switchgear cabient is performed manually,which has such problems as low efficiency and high risk.The study of automatic fire extinguishing device for existing high voltage switchgear cabinet has such problems as electric field distortion,unclear starting threshold and improper selection of fire extinguishing agent.For solving above problem,the study of automatic fire extinguishing system is developed in this paper.Firstly,the sprinkler structure of fire extinguishing agent is optimized so to reduce the maximum electrical field strength and avoid dielec-trci breakdown risk.Then,a fire simulation test of true switchgear cabinet is carried out,and the starting threshold of fire extinguishing device is determined based on the temperature field distribution during the test.Moreover,type and dosage of the extinguishing agent are studied,and a reasonable extinguishing agent setting scheme for high volt-age switchgear cabinet is determined.A complete automatic fire extinguishing system of high voltage switchgear cabi-net is set up.The test results show that the developed fire extinguishing system is fast and effective.
作者
张佳庆
谢佳
黄伟民
过羿
尚峰举
贾佳
王伟
马国明
ZHANG Jiaqing;XIE Jia;HUANG Weimin;GUO Yi;SHANG Fengju;JIA Jia;WANG Wei;MA Guoming(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 230022,China;State Grid Anhui Electric Power Co.,Ltd.,Hefei 230061,China;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China)
出处
《高压电器》
CAS
CSCD
北大核心
2024年第1期41-47,共7页
High Voltage Apparatus
基金
国网安徽省电力有限公司科技项目(B3120520000D)。
关键词
高压开关柜
灭火装置
电场优化
启动阈值
真型实验
high voltage switchgear cabinet
fire extinguishing device
electric field optimization
start threshold
real experiment
