山东电力技术2026，Vol.53Issue(5)：93-102,10.DOI:10.20097/j.cnki.issn1007-9904.250516
基于封闭GIS复杂空间SF6泄漏扩散特性与排气策略研究
Analytical Study on SF6 Gas Leakage Mechanisms,Diffusion Patterns,and Mitigation Strategies in Confined GIS Spaces
王晓欢 1周孟范 2韩松涛 3闫苗苗 3王永 3林森3
作者信息
- 1. 平高集团有限公司,河南 郑州 450046||河南平高电气股份有限公司,河南 平顶山 467000
- 2. 河南平高电气股份有限公司,河南 平顶山 467000
- 3. 平高集团有限公司,河南 郑州 450046
- 折叠
摘要
Abstract
The fully enclosed combined electrical room represents a complex spatial configuration where equipment,pipelines and cabinets coexist.SF6 gas leakage within such an environment may lead to equipment malfunction and malfunction safety risk.In this study,a gasinsulated switchgear(GIS)is established.The evolution characteristics of SF6 leakage and diffusion under various leakage directions,heights and positions of combined electrical equipment.Based on these analyses,effective monitoring and exhaust strategies are proposed.The results indicate that upward leakage of SF6 is sprayed and diffuses to the GIS space along the roof and wall.The downward leakage tends accumulate in the bottom plate and gradually diffuse to both sides.Leakage toward the space on both sides is easy to gather in the local position of the casing and produce the upper and lower shunt.The leakage near the wall is easy to gather high concentration SF6 in the near wall and corner.The diffusion evolution process of leakage SF6 can be characterized by four stages:high-speed ejection,vortex entrainment,inertial diffusion and gravity deposition.The ventilation device should be started activated within 60 s,48 s,15 s and 15 s respectively for upward,left and right sides,downward and near wall leakage scenarios,respectively.Furthermore,recovery or ventilation device should be arranged in the middle of the top/bottom plate of the GIS room,0-6m near the wall on both sides,and at the lower part of the wall on the surrounding side.The research results can provide ideas and practical guidance for optimizing SF6 gas monitoring layout,leakage gas recovery and leakage accident emergency in GIS room.关键词
高压电器/SF6泄漏/扩散演化/监测响应/排气策略/数值模拟Key words
high voltage apparatus/SF6 leakage/diffusion evolution/monitoring response/exhaust strategy/numerical simulation分类
信息技术与安全科学引用本文复制引用
王晓欢,周孟范,韩松涛,闫苗苗,王永,林森..基于封闭GIS复杂空间SF6泄漏扩散特性与排气策略研究[J].山东电力技术,2026,53(5):93-102,10.
