高电压技术2013，Vol.39Issue(3)：513-519,7.DOI:10.3969/j.issn.1003-6520.2013.03.001
高海拔地区±800 kV特高压直流输电系统绝缘子带电自然积污特性
Natural Contamination Deposited Characteristics of ±800 kV UHV DC Insulators at High Altitudes
摘要
Abstract
To obtain the natural contamination deposition characteristics of UHVDC insulators, we tested contamination deposition of full-scale insulators, in which the equivalent salt deposit density (ESDD) and the non-soluble deposit density (NSDD) were measured. A series of comparisons in ESDD and NSDD were performed based on tests on insulator-strings of different materials (glass, porcelain and composites ) , different string structures ( I-shaped suspension type,V-shaped suspension type, and tension type) , different shed shapes (composite insulators sheds, porcelain long rod, bell shaped disc suspension, and three-shed type porcelain) ,and different positions along the insulator-strings (the both ends and the middle of insulator). Preliminary results are obtained from the tests: the porcelain insulator has relatively lighter pollution than other materials; the tension insulator has a much lighter pollution than other structures; the porcelain long rod insulator shows better and has a lighter pollution than that on other shed shapes; and the earth side of the insulator has the most serious pollution in test. This work can provide some important references for the external insulation of UHVDC transmission projects in China high altitudes areas, especially in Kunming.关键词
高海拔/±800 kV/绝缘子/积污特性/等值盐密/等值灰密Key words
high altitude/ ±800 kV/ insulators/ contamination deposited characteristic/ ESDD/ NSDD引用本文复制引用
律方成,秦春旭,郭文义,刘云鹏..高海拔地区±800 kV特高压直流输电系统绝缘子带电自然积污特性[J].高电压技术,2013,39(3):513-519,7.基金项目
国家自然科学基金(51077054) （51077054）
中国南方电网有限责任公司科技项目(K201016). （K201016）
