【摘要】 介绍了国内外对直流绝缘子积污特性和污耐压特性的现状。为防止直流线路污闪 ,提出了应重点研究直流电压下的爬电比距和不同型式绝缘子受上、下表面不均匀积污及灰密影响下的直流污耐压特性等课题 ,并推荐了以真型试验求取污耐压为基础的直流绝缘子串防污设计原则更多还原

【Abstract】 In this paper the overseas and domestic research situation of anti-pollution performance and withstand voltage at pollution condition for DC insulators is introduced. For preventing pollution flashover of DC line, it is put forward to investigate leakage distance under DC voltage and withstand voltage performance at pollution condition for different type insulators influenced by nonuniformity pollution distribution and ash density at top and bottom. Also the anti-pollution design principle based withstand voltage at pollution condition which is obtained from real tests is recommended.更多还原