高电压技术2017，Vol.43Issue(5)：1572-1580,9.DOI:10.13336/j.1003-6520.hve.20170428024
高压直流绝缘子积污特性数值模拟与预测
Numerical Simulation and Prediction on Pollution Accumulation Characteristics of HVDC Insulator
摘要
Abstract
In order to study the pollution of HVDC insulators in different environments,a hydrodynamic HVDC insulator simulation model was built.The particle collision rate of insulator surface and its influence factors were studied under haze and strong wind conditions,and the feasibility of the simulation model was verified by the natural pollution deposit test.In addition,to make the results more adaptive,the particle collision rate prediction model based on neural network was built.The research results are as below:the electric field force can affect the dust particles' motion under haze conditions,and the influence of the electric field force becomes weak when wind velocity becomes larger than 1 m/s.In a strong wind environment,when the particle diameter is smaller than 80 μm,the impact of velocity on top surface is not obvious;when the particle diameter is larger than 80 μm,the particle collision rate of top surface becomes smaller with the increase of velocity,and the particle collision rate of bottom surface is about 0;the impact of particle diameters on the particle collision rate is greater than wind velocity.When the air current is not horizontal,the upward air current increases particle collision rate of bottom surface and the down air current increases particle collision rate of top surface.This work can be used to analyze the contamination depositing law in different conditions,and to provide the guidance of the insulation design and maintenance of DC transmission line.关键词
高压直流绝缘子/积污特性/流体力学/粒子撞击率/雾霾/BP神经网络Key words
HVDC insulator/pollution accumulation characteristics/hydromechanics/particle collision rate/haze/BP neural network引用本文复制引用
任昂,毕晓甜,秦丽伟,程学启,李清泉..高压直流绝缘子积污特性数值模拟与预测[J].高电压技术,2017,43(5):1572-1580,9.基金项目
国家电网公司科技项目(SGTYHT/15-JS-193).Project supported by Science and Technology Project of SGCC(SGTYHT/15-JS-193). （SGTYHT/15-JS-193）
