电网技术2017，Vol.41Issue(11)：3553-3558,6.DOI:10.13335/j.1000-3673.pst.2016.3127
±800kV特高压宾金直流悬式及支柱绝缘子自然积污特性
Test Research on Natural Contamination Performance of Suspension and Post Insulators From±800kV Yibin-Jinhua UHVDC Transmission Project
摘要
Abstract
In order to research natural pollution characteristics of external insulation of UHVDC transmission and transformation equipment, energized and non-energized test insulators were installed on Yibin-Jinhua transmission line and Jinhua convertor station. After complete one year pollution deposition period, equivalent salt deposit density (ESDD) and non-soluble deposit density (NSDD) on upper and lower surface of the insulators were measured and analyzed. Results indicated that UHVDC electrical field enhanced pollution of the energized insulators apparently. ESDD and NSDD of the energized insulators on the line were 1.52 and 1.86 times of those of non-energized insulators respectively. ESDD and NSDD values of composite post insulator under±800kV potential position were 1.45 and 1.27 times of those of rest parts. Influence of potential polarity on both suspension and post insulators were not obvious. Compared to composite post insulator, difference of pollution between upper and lower surfaces of suspension insulators was much more notable.关键词
特高压直流/自然积污/带电系数/灰盐比/积污不均匀度Key words
UHVDC/natural pollution/energy coefficient/ratio of NSDD to ESDD/contamination unevenness分类
信息技术与安全科学引用本文复制引用
李特,王少华,柳青山,朱亦振,胡文堂,刘黎,刘泽辉..±800kV特高压宾金直流悬式及支柱绝缘子自然积污特性[J].电网技术,2017,41(11):3553-3558,6.基金项目
国家电网公司科技项目(52170216000D). Project Supported by Science and-Technology Program of State Grid Corporation of China (52170216000D). （52170216000D）
