On the basis of data and anti-pollution technology knowledge,lots of technology research results,such as the correction of SPS,the correction of NSDD and so on should be considered in 800kV UHVDC transmission line external insulation design and arrangement.
针对污秽外绝缘设计是±800kV直流工程关键技术问题之一,提出了对±800kV直流输电线路绝缘子串进行污秽外绝缘设计考虑现场污秽度校正、NSDD校正及采用污耐压方法进行污秽外绝缘设计的方法;根据瓷、玻璃绝缘子的污耐压曲线对±800kV直流输电线路"I"型绝缘子串进行了污秽外绝缘设计。