Numerical Simulation and Discharge Characteristic Analysis of Metallic Particle Motion in Non-uniform Electric Field of DC GIL

被引：0

作者：

Lü F. ^{[1
]}

Liu H. ^{[1
]}

Yin K. ^{[1
]}

Li Z. ^{[2
]}

Dong M. ^{[1
]}

Cao D. ^{[3
]}

Xie Q. ^{[3
]}

机构：

[1] State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, North China Electric Power University, Changping District, Beijing

[2] China Electric Power Research Institute, Haidian District, Beijing

[3] Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding, 071003, Hebei Province

来源：

| 1600年 / Chinese Society for Electrical Engineering卷 / 37期

关键词：

Electrical field distortion; Electrical-mechanical transient coupling calculation model; Gap discharge; Metallic particle motion; Non-uniform electric field of DC GIL;

D O I：

10.13334/j.0258-8013.pcsee.170264

中图分类号：

学科分类号：

摘要：

The study of metallic particle motion in non-uniform electric field of DC gas insulated line (GIL) and gap discharge caused by particle motion has great significance. 3D electrical-mechanical transient coupling finite element numerical calculation model was setup: in the view of electrostatic theory, charge quantity and electrostatic force of particle were calculated; moving mesh model of particle motion was given combining mechanical equation with Laplace smoothing method; condition of virtual wall was raised in order to restrain the calculated failure caused by meshing topology changing when particle contacted electrodes. Classical particle motion in diverging conducting plate electrodes was simulated; the accuracy of calculation model was verified through corresponding experiment. Typical gap discharge forms were analyzed according to the stream starting criterion after gaining the electric field distortion of particle surface, results show that during moving to electrodes, the maximum value of electric field is always located at the tip of one side which near the electrode;the discharge to low (high) voltage electrode when particle adjacent high (low) voltage electrode is caused by micro-discharge; and the discharge to high voltage electrode can make the breakdown of the whole gap at lift-off stage. © 2017 Chin. Soc. for Elec. Eng.

引用

页码：2798 / 2806

页数：8

共 25 条

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