用饱和盐密确定污秽等级及绘制污区分布图的探讨  

STUDY ON DEFINING POLLUTION CLASSES AND MAPPING POLLUTION AREAS BY SATURATED EQUAL SALT DEPOSIT DENSITY

作　　者：宿志一[1] 

机构地区：[1]中国电力科学研究院,北京100085

出　　处：《电网技术》2004年第8期16-19,共4页Power System Technology

摘　　要：文章指出为防止大面积污闪事故的发生需使用饱和盐密绘制修订污区图;饱和盐密应是常年不清扫线路绝缘子的实测结果,可采用平均年度最大盐密与其自清洗率之比来表征;使用饱和盐密绘制污区图的工作重点是如何正确界定0级污区范围和如何正确区分Ⅰ级和Ⅱ级污区;应根据长串绝缘子的污秽试验结果选择常用绝缘子的片数来配置饱和盐密下线路的绝缘。The map of pollution area must be revised by saturated ESDD to prevent the large-scale pollution flashover in power grid. The saturated ESDD derives from on-site measured results of the line insulators never cleaned and equals to the ratio of the greatest annual ESDD to self-clearing rate. The focus of the task is how to correctly delimit the extent of cleaning area and how to strictly distinguish the light polluted regions from the medium polluted regions. The insulation of transmission lines should be configured under the saturated ESDD, i.e., to choose the pieces of common used insulators according to the results of pollution tests of long insulator strings.

关 键 词：电力系统 电网 饱和盐密 污秽等级 污区分布图 输电线路 绝缘子 

分 类 号：TM726[电气工程—电力系统及自动化] TM216[一般工业技术—材料科学与工程]