XP-70瓷绝缘子串积污特性数值仿真研究  

Simulation Analysis of Contamination Accumulation Characteristics of XP-70 Porcelain Insulator

作　　者：邓永清 黄道春[2] 阮江军[2] 况燕军 DENG Yongqing;HUANG Daochun;RUAN Jiangjun;KUANG Yanjun(School of Information Engineering,Nanchang University,Nanchang 330031,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;State Grid Jiangxi Electric Power Company Limited Power Research Institute,Nanchang 330096,China)

机构地区：[1]南昌大学信息工程学院,江西南昌330031 [2]武汉大学电气与自动化学院,湖北武汉430072 [3]国网江西省电力有限公司电力科学研究院,江西南昌330096

出　　处：《湖南电力》2024年第3期34-39,共6页Hunan Electric Power

基　　金：国家自然科学基金项目(U2066217)。

摘　　要：以3片XP-70瓷绝缘子串为研究对象,建立数值风洞仿真模型,基于欧拉气固两相流分析模型,利用污秽体积分数评价绝缘子的积污程度,对XP-70绝缘子的积污特性进行数值仿真分析。研究表明,绝缘子迎风面静压最大,与污秽颗粒碰撞激烈,同时空气流体经过绝缘子时在湍流的作用下容易在绝缘子背风面和底部构成回流;绝缘子表面污秽积污监测点积污程度与环境中污秽体积分数成正比,绝缘子迎风面、背风面和底面的积污监测点积污程度随风速和粒径的增大而增大,背风面的积污程度要低于迎风面和底面;绝缘子侧风面积污程度最低,绝缘子侧风面积污监测点的积污量随风速和粒径的增大而减小。Three pieces of XP-70 porcelain insulator string are taken as research objects,a numerical wind tunnel simulation model is established.Based on the Euler gas-solid two-phase flow analysis model,the pollution volume fraction is used to evaluate the pollution degree of the insulators,and the pollution characteristics of XP-70 insulators are analyzed by numerical simulation.The results show that the static pressure on the windward side of the insulator is the largest,and it collides with the pollution particles fiercely.At the same time,when the air fluid passes through the insulator,it is easy to form backflow on the leeward side and bottom of the insulator under the effect of turbulence.With the increase of pollution concentration,the pollution degree of the pollution monitoring points on the surface of insulator increases.The amount of pollution on the wind-ward side,leeward side and bottom area of the insulator increases with the increase of the wind speed and particle size,while the pollution amount of the pollution monitoring points on the cross wind area of the insulator decreases with the increase of the wind speed and particle size.

关 键 词：XP-70绝缘子 积污特性 气固两相流 数值风洞 

分 类 号：TM854[电气工程—高电压与绝缘技术]