中国电机工程学报2012，Vol.32Issue(19)：140-147,8.
交流电场强度对导线雾凇覆冰特性的影响
Influences of AC Electric Field Strength on Conductor Rime Icing Performance
摘要
Abstract
The icing on transmission lines seriously threatens the security of power systems. It is necessary to investigate the icing characteristics on conductors with the influences of electric field strength as the practical iced lines. A series of energized icing tests of conductors were implemented in the artificial climate chamber. The corona discharge quality during the icing procedure was measured by the Q-V trace method, and icing characteristics such as ice amount and ice density were also achieved. To explain the mechanisms of the effects of electric field on icing characteristics, the effect of dielectrophoresis and the Coulomb force created by the charging of droplets under AC corona field were calculated. Experimental results indicate that under the test condition, both the ice amount and the ice density firstly increase and then decrease with the field strength. The calculation shows that when corona is weak, the effect of dielectrophoresis will propel the droplets forward to the conductors, which will increase the ice amount and density. When the values of electric field strength and space charge density are large, the Coulomb force from the droplet charging will apparently obstruct the droplets from approaching the conductor. This obstruction effect may be the reason of the decline of the ice amount and ice density under a strong electric field.关键词
带电覆冰/覆冰特性/电吸力/电晕放电/水滴荷电Key words
energized icing/icing characteristics/dielectrophoresis/corona discharge/droplet charging分类
信息技术与安全科学引用本文复制引用
舒立春,李特,蒋兴良,胡琴,罗保松,杨占刚..交流电场强度对导线雾凇覆冰特性的影响[J].中国电机工程学报,2012,32(19):140-147,8.基金项目
国家重点摹础研究发展计划项目（973项目） （）
国家自然科学基金项目 （）
国家创新研究群体基金项目f51021005）. （）
