摘要
The electric field required for stable propagation of a positive streamer along an ice surface was investigated by measuring the currents associated with the streamer discharge.The influence of the surface properties,namely the existence of a water film on the ice surface and surface contamination,was analyzed.Results showed that in the presence of an ice surface,except in case of low conductive surface,streamers propagate stably with an external field lower than that generally measured for propagation in air alone(approximately 5 kV/cm).For higher contamination levels,the stability field was found to be slightly influenced by the temperature,while for lower contamination levels,it decreased significantly with an increase in temperature.
The electric field required for stable propagation of a positive streamer along an ice surface was investigated by measuring the currents associated with the streamer discharge. The influence of the surface properties, namely the existence of a water film on the ice surface and surface contamination, was analyzed. Results showed that in the presence of an ice surface, except in case of low conductive surface, streamers propagate stably with an external field lower than that generally measured for propagation in air alone （approximately 5 kV/cm）. For higher contamination levels, the stability field was found to be slightly influenced by the temperature, while for lower contamination levels, it decreased significantly with an increase in temperature.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2009年第6期1284-1293,共10页
High Voltage Engineering
关键词
电场
电子
稳定性
绝缘技术
atmospheric icing
ice-covered insulators
ice surface discharge
positive streamer development
streamer propagation field
streamer stability field
