湖南地区输电线路悬式绝缘子自然积污规律  

Natural contamination characteristics of suspension insulator in Hunan Province

作　　者：蒋子丹 蒋兴良[1] 蒋晏如 李永福 JIANG Zidan;JIANG Xingliang;JIANG Yanru;LI Yongfu(State Key Laboratory of Power Transmission Equipment&System Security and New Technology,College of Electrical Engineering,Chongqing University,Chongqing 400030,China;State Grid Zhuzhou Power Supply Company,Zhuzhou 412000,China;State Grid Chongqing Electric Power Co.Electric Power Research Institute,Chongqing 401123,China)

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030 [2]国网株洲供电公司,湖南株洲412000 [3]国网重庆市电力公司电力科学研究院,重庆401123

出　　处：《中南大学学报（自然科学版）》2018年第7期1683-1690,共8页Journal of Central South University:Science and Technology

基　　金：国家电网科技项目(SGTYHT/14-JS-188)~~

摘　　要：利用位于湖南省电力公司500 kV输电线路上的绝缘子样品,研究典型区域悬式绝缘子的自然积污特点。根据历年来的气象数据、绝缘子每月的等值附盐密度和不可溶物密度的取样数据研究污秽颗粒粒径、降雨、季节性等因素对绝缘子表面自然积污的影响。同时,通过拟合得到了绝缘子清洗能力随降雨强度、降雨时间发生变化的指数方程。研究结果表明:黏附力和颗粒粒径直接决定颗粒在绝缘子表面持续积污的能力,且较小污秽颗粒更易于吸附绝缘子表面。In order to study the natural contamination characteristics of 500 kV line suspension insulator,the test insulator string with 500 kV transmission line pollution data result of a city in Hunan province was analyzed.Historical meteorological data and monthly equivalent salt deposit density and non-soluble deposit density measurements taken over a period of five years were analyzed to investigate the seasonal character,the size of particle and the relationship between rainfall intensity and insulator cleaning.A mathematical model was proposed to show the functional relationship between rainfall intensity and insulator self-cleaning capability.The results show that small particles are affected by adhesion forces when they move on the insulator surface and they are easily deposited on the insulator surface.

关 键 词：悬式绝缘子 积污特性 等值附盐密度 不可溶物密度 颗粒粒径 黏附力 降雨强度 

分 类 号：TM852[电气工程—高电压与绝缘技术]