高电压技术2013，Vol.39Issue(6)：1541-1548,8.DOI:10.3969/j.issn.1003-6520.2013.06.037
交流电场对220 kV复合绝缘子覆冰及其闪络特性的影响
Influence of AC Electrical Field on 220 kV Composite Insulators Icing and Flashover Characteristics
摘要
Abstract
To further research the energized icing of high voltage vacuum composite insulators,taking a composite insulator FXBW-220/100 as the sample,we experimentally investigated both charged and no-charged icing in a multifunctional artificial climate chamber.According to the test results,the influence of electric field on composite insulators' icing and flashover characteristics was analyzed,and reasonable explanations for the phenomenon in the experiments were also proposed.The results show that the main influence of the electric field on the ice covering is the heating effect brought by the polarization and several conventional kinds of discharge.However,the electric field strength and the uniformity of the field lines also show deep influences on the icing.Several other conclusions for the composite insulator under charge are as follows:1) The high-voltage terminal of a composite insulator in the presence of a grading ring does not easily bridge.2) Most of the ice cover structures on the umbrella shapes of a composite insulator are smooth,dense,and transparent.3) The icicle density of glaze icing in the presence of charge is less than that in the absence of charge,and it decreases with increasing external voltage.4) The density of icicles hanging on the grading ring increases with external voltage.5) The weight of the ice covered on the insulator shows a tendency of ascending at first and then descending when the external voltage increases.6)The 50％ flashover voltage of insulator shows a tendency of descending at first and then ascending when the external voltage increases.关键词
绝缘子/电场/均压环/带电覆冰/冰棱密度/闪络电压Key words
insulator/ electric field/ grading ring/ energized icing/ icicle density/ flashover voltage引用本文复制引用
袁伟,舒立春,蒋兴良,胡琴,汪诗经..交流电场对220 kV复合绝缘子覆冰及其闪络特性的影响[J].高电压技术,2013,39(6):1541-1548,8.基金项目
国家重点基础研究发展计划(973计划)(2009CB724502 （973计划）
2009CB724501) （）
国家自然科学基金(51177179) （51177179）
Project supported by National Basic Research Program of China(973 Program) (2009CB724502,2009CB724501),National Natural Sciences Foundation of China(51177179). （973 Program）
