摘要
试验研究了电压极性、固相物介电常数、固相物占空比等对非均匀电场中流化床状态气固混合体直流击穿电压的影响 ,计算了存在固体颗粒物时电极间隙中的电场分布 ,并定性分析了放电现象。结果表明 :固体颗粒物的存在使电场发生畸变 ;气固混合体在非均匀电场中的直流击穿特性也具有正极性击穿电压低于负极性的“极性效应” 。
The dc breakdown characteristics of the mixture of gas and solid in fluidized bed in non-uniform field is investigated experimentally. The effects of the voltage polarity, the permittivity of solid dielectrics and the volume ratio are discussed and analyzed, the electric field distribution is calculated and analyzed in the presence of solid particles. Experimental results show that the solid particles deformed electric field and the main factors affecting the breakdown voltage include the voltage polarity and the permittivity of solid dielectrics. The positive breakdown voltage is lower than the negative breakdown voltage. And the breakdown of mixture of gas and solid is more easily in which the permittivity value of solid dielectrics is high.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2004年第5期50-52,共3页
High Voltage Engineering
基金
国家自然科学基金重点资助项目 ( 5 0 2 3 70 10 )
