摘要
为研究空气中悬浮沙粒对绝缘子沿面电位和电场分布的影响,基于静电场有限元法建立了棒形瓷绝缘子的仿真模型,应用有限元软件计算分析了绝缘子在不同悬浮沙粒环境下的电位和电场分布。仿真结果表明:绝缘子的几何形状可影响绝缘子的电位和电场分布;空气中悬浮的电中性沙粒可小幅畸变绝缘子沿面电位和电场;悬浮沙粒带上电荷且荷质比相同时,绝缘子沿面电位和电场的畸变幅度加大,且畸变幅度受悬浮沙粒的粒径、数量、荷质比的大小和极性影响明显;空气中的带电沙粒与电中性沙粒的混合粒子群或正、负极性沙粒混合粒子群对绝缘子沿面电位和电场的畸变幅度,均小于粒子群中全部沙粒均带上相同荷质比时对绝缘子沿面电位和电场的畸变幅度。
Suspended sand particles （SSPs） affect the surface potential and electric field distribution on insulators. To study this influence, we established a numerical model of a long rod ceramic insulator based on the finite element method （FEM） of electrostatic field, and calculated the potential and electric field distribution along the insulator under different SSP conditions. The results show that the geometry of the insulator influences the potential and electric field, which are distorted slightly by uncharged SSPs. The distortion will increase significantly if SSPs are charged with the same charge-to-mass ratio, while it is also greatly influenced by the quantity, diameter, charge-to-mass ratio, and charge polarity of SSPs. Moreover, the distortion above is greater than that of the potential and electric field strength induced by the hy- brid particle swarm of charged and uncharged SSPs, as well as that by the hybrid particle swarm of positive and negative SSPs.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2014年第9期2706-2713,共8页
High Voltage Engineering
基金
中国铁路总公司科技研究开发计划项目(2012J007-C)
甘肃省高校基本科研业务费专项资金(212099)
兰州交通大学青年科学基金项目(2013038)~~
关键词
悬浮沙粒
棒形绝缘子
静电场
有限元法
电位分布
电场分布
suspended sand particles
long rod insulator
static electric field
finite element method
potential distribution
electric field distribution
