中国电机工程学报2024，Vol.44Issue(15)：6219-6228,中插32,11.DOI:10.13334/j.0258-8013.pcsee.230725
直流GIS/GIL中线形金属微粒群飞萤运动现象与危险程度评估
Firefly Movement Phenomenon of Wire Particle Swarm and Risk Assessment in DC GIS/GIL
摘要
Abstract
The existence of metal particle swarm in DC GIS/GIL seriously threatens the insulation performance of the equipment,and the wire particles will undergo firefly.To clarify the firefly motion mechanism of the wire particle swarm,this paper proposes a firefly motion observation platform,and obtains the motion characteristics of the wire particle swarm.Furthermore,the charged motion model of particle swarm is established,and the dynamic simulation of wire particle swarm is realized.The results show that the onset voltage of the particle swarm is negatively correlated with the number of particles,and increases with the increase of particle diameter while decreases with the increase of particle length.The lifting voltage of the particle swarm decreases in the stacked state,but the onset voltage of the particle swarm is not affected by the initial states of the particles.Compared with the single particle,the changes of Coulomb force,space charge and field strength between particles make the wire particle swarm lead to a series of irregular suspension and random spanning motions exhibited by the wire particle swarm.The particle swarm significantly reduces the electrical strength of the equipment,and further evaluates the risk degree of the wire particle swarm motion behavior based on the air gap breakdown effect of the particles.The specific results show that for the wire particle swarm firefly,the risk of the ground electrode single particle firefly is the lowest,the risk of the high voltage electrode single particle firefly and the stationary particles firefly is higher,and the risk of particles flying around is the highest.This study provides a reference for the main insulation design of the equipment in terms of suppressing the movement of the particle swarm.关键词
GIS/GIL/线形微粒群/运动特性/飞萤机制/危险程度评估Key words
GIS/GIL/wire particle swarm/motion characteristics/firefly mechanism/risk assessment分类
信息技术与安全科学引用本文复制引用
胡智莹,魏来,耿秋钰,王健,李庆民,常亚楠..直流GIS/GIL中线形金属微粒群飞萤运动现象与危险程度评估[J].中国电机工程学报,2024,44(15):6219-6228,中插32,11.基金项目
国家自然科学基金项目(51929701,52127812) （51929701,52127812）
国家重点研发计划(2021YFB2601404). Project Supported by National Natural Science Foundation of China(51929701,52127812) （2021YFB2601404）
National Key R&D Program of China(2021YFB2601404). （2021YFB2601404）
