考虑电流元雷诺应力的绝缘子串并联间隙电弧运动特性分析  

Analysis on Arc Movement in the Gap Between Parallel Insulator Strings Based on Reynolds Stress of Current Element

作　　者：廖一帆[1,2] 胡传良 唐军 刘刚 LIAO Yifan;HU Chuanliang;TANG Jun;LIU Gang(School of Electric Power,South China University of Technology,Guangzhou 510640,China;China Southern Power Grid Science Research Institute Co.,Ltd.,Guangzhou 510080,China;State Power Corporation Chenzhou Power Supply Company of Hunan Province,Hunan Chenzhou 423000,China)

机构地区：[1]华南理工大学电力学院,广州510640 [2]南方电网科学院有限公司,广州510080 [3]国网湖南省电力公司郴州供电分公司,湖南郴州423000

出　　处：《高压电器》2019年第10期169-175,共7页High Voltage Apparatus

基　　金：特高压工程技术(昆明、广州)国家工程实验室开放基金资助(NEL201504);国家高技术研究发展计划(863计划)资助项目(2015AA050201)~~

摘　　要：基于电弧的链式模型,引入电弧运动过程中电流元的雷诺方程,考虑电流元之间的相互作用力,建立磁场力、空气阻力、热浮力和雷诺应力的电流元运动模型。对典型参数下500kV架空输电线路并联间隙电弧运动过程进行仿真,与试验结果进行比较。考虑电流元之间的相互作用力的电弧运动模型与实际情况更相符,间隙电极倾角越大,上弧根和弧柱部分所受磁场力越大,水平电极越长,越有利于电弧的疏导。A current element motion model of magnetic force, air resistance, thermal buoyancy and Reynolds stress is established on the basis of the chain model of electric arc, in which the interacting force between current elements is considered and the Reynolds equation of the current element in arc movement is introduced. The arc movement process in the gap between the parallel insulator strings of a 500 kV overhead transmission line is simulated with typical parameters, and the results are compared with the test data. It is revealed that the present arc movement model considering the interaction between current elements is more consistent with the actual situation, compared with other models. The larger the inclination angle of the gap electrode is, the greater the magnetic forces of the upper arc root and the arc column become;and longer horizontal electrode is more conducive to the guidance for the arc.

关 键 词：并联间隙 链式模型 磁场力 雷诺应力 倾角 电极长度 运动特性 

分 类 号：TM216[一般工业技术—材料科学与工程]