Calculation and Analysis of Lifting Field of Metallic Particle on Dielectric Coated Electrode in SF<sub>6</sub> Under DC Voltage

Lü Fangcheng; LIU Hongyu; YAN Xianglian; DONG Meng; LI Zhibing; ZHAN Zhenyu

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

Calculation and Analysis of Lifting Field of Metallic Particle on Dielectric Coated Electrode in SF₆ Under DC Voltage

更新时间：2025-12-08

- Calculation and Analysis of Lifting Field of Metallic Particle on Dielectric Coated Electrode in SF₆ Under DC Voltage
- Vol. 44, Issue 4, Pages: 1187-1195(2018)
- 作者机构：
  
  1. 华北电力大学新能源与电力系统国家重点实验室
  2. 中国电力科学研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：10 May 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
Lü Fangcheng, LIU Hongyu, YAN Xianglian, et al. Calculation and Analysis of Lifting Field of Metallic Particle on Dielectric Coated Electrode in SF₆ Under DC Voltage[J]. 2018, 44(4): 1187-1195.
DOI：

Lü Fangcheng, LIU Hongyu, YAN Xianglian, et al. Calculation and Analysis of Lifting Field of Metallic Particle on Dielectric Coated Electrode in SF₆ Under DC Voltage[J]. 2018, 44(4): 1187-1195. DOI：

摘要

电极覆膜是直流GIL中提高金属微粒启举场强的一种重要措施

研究覆膜后启举场强的计算能够为实际GIL覆膜选择提供理论支撑。Parekh启举场强计算模型未考虑薄膜相对介电常数、微粒与薄膜间发生局部放电时电子崩头部空间电荷的影响

且微粒受到的电场力计算公式与实际不符

对此进行了改进。基于改进模型获得了不同SF

气体压力、薄膜材质及厚度组合下的计算结果

并开展实验验证了改进模型的准确性。考虑薄膜相对介电常数后微粒与薄膜间发生局部放电的场强降低

考虑空间电荷后微粒带电量会明显增加

从而提高了启举场强计算的精确度;此外

新的电场力计算公式更能揭示覆膜影响微粒受力的物理本质。分析表明:微粒带电量减少和受到向下的电场力是电极覆膜提高启举场强的两个原因。

Abstract

Dielectrically coated electrode is an important way to improve lifting field of metal particles in DC GIL

and study on the lifting field calculation with dielectric coated electrodes can provide a theoretical support for the selection of coating in practical GIL.The effect of coating dielectric constant and the space charge in the electron avalanche head when the partial discharge occurs between particles and dielectric coated electrodes have not been considered in the Parekh calculation model about lifting field

and the calculation formula of electrostatic force is contrary to what it actually is

thus we improved the model.Results under different groups of SF

gas pressure

coating material and thickness were gained based on the optimization model to verify the accu

racy of optimization model.The electric field of partial discharge between particles and dielectric coated electrodes is decreased with considering the effect of coating dielectric constant

particle charge increases obviously when space charge is taken into account

improving the computing accuracy of lifting field;moreover

the new electric field force calculation formula can better explain the physical properties of coating’s effect on electric field force.It is concluded that the decreasing of particle charge and downward electric field force are causes for enhancement of lifting field.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Propagation Characteristics of Water Trees in XLPE Power Cables Under Single Polarity DC Voltage

Generation Process of Impurity Bridges in Oil-paper Insulation Under DC Voltage

Surface Charge Decay on Silicone Rubber Materia

Wormholes Effect in DC Flashover Process of Alumina Filled Epoxy Resin Surfaces in SF₆

Motion Behavior of Free Conducting Wire-type Particles in SF₆ Gas Under DC Voltage

Related Author

HUANG Ming

YANG Di

TAO Wenbiao

YANG Mingliang

ZHOU Kai

NI Heli

WANG Tonglei

LI Yuan

Related Institution

School of Electrical Engineering and Information, Sichuan University

China Electric Power Research Institute

School of Electrical Engineering, Xi’an Jiaotong University

State Key Laboratory of Control and Simulation of Power System and Generation Equipment

Department of Electrical Engineering, Tsinghua University

AI问答

⁰

Calculation and Analysis of Lifting Field of Metallic Particle on Dielectric Coated Electrode in SF6 Under DC Voltage

DOI：

摘要

Abstract

关键词

Keywords

references

Calculation and Analysis of Lifting Field of Metallic Particle on Dielectric Coated Electrode in SF₆ Under DC Voltage