电工技术学报2016，Vol.31Issue(10)：85-92,8.
空间介质颗粒对交流导线电晕特性影响规律
Influence of Space Dielectric Particle on AC Corona Discharge Characteristic of Conductor
摘要
Abstract
The UV imager FiLin-6 together with the video recorder is used to study the influence of dielectric particles on the AC corona discharge characteristics of the conductors. The test results show that with the increase of test voltage, corona discharge first happens in the air space between the conductor and the particle, then a bright discharge path will form, finally if the test voltage is high enough, discharge will bypass the particle and go on developing. The larger the particle size and the smaller the distance between the particle and the conductor, the smaller the corona onset voltage will be. The onset voltage is lower than that in single particle condition. Compared with single particle condition, the left and right arrangement of two particles have more effects on the corona discharge process and onset voltage. The displaced dipole method is used to calculate the electric field strength combined with the charge simulation method. The calculation result shows that with the decrease of distance between particle and conductor, the particle size and the relative permittivity increase, meanwhile the maximum surface electric field strength and the average electric field strength between the conductor and the particles increase. The existing of multi-particles will further increase the surface electric field strength of the conductor, where the impacts of the particles in the same direction with the electric field strength are larger.关键词
空间颗粒/电晕放电/起晕电压/紫外成像/偏心偶极子/电场强度Key words
Space particle/corona discharge/onset voltage/UV imaging/displaced dipole/electric field strength分类
信息技术与安全科学引用本文复制引用
朱雷,刘云鹏,吴振扬,耿江海..空间介质颗粒对交流导线电晕特性影响规律[J].电工技术学报,2016,31(10):85-92,8.基金项目
国家重点基础研究发展计划(973计划)(2011CB209401)和国家自然科学基金(51277073)资助项目. （973计划）
