[1]吴细秀,杨芷宁,闫格,等.GIS隔离开关操作条件下SF6气体高频放电模型的研究[J].高压电器,2019,55(04):1-10.[doi:10.13296/j.1001-1609.hva.2019.04.001]
 WU Xixiu,YANG Zhining,YAN Ge,et al.Investigation on the High?frequency Model of SF6 Gas Discharge Caused by Disconnector Operation in GIS[J].High Voltage Apparatus,2019,55(04):1-10.[doi:10.13296/j.1001-1609.hva.2019.04.001]
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GIS隔离开关操作条件下SF6气体高频放电模型的研究()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第55卷
期数:
2019年04期
页码:
1-10
栏目:
研究与分析
出版日期:
2019-04-15

文章信息/Info

Title:
Investigation on the High?frequency Model of SF6 Gas Discharge Caused by Disconnector Operation in GIS
文章编号:
0001-0010
作者:
吴细秀1 杨芷宁1 闫格1 吴士普2 余光召1
武汉理工大学自动化学院与中国电力科学研究院武汉分院
Author(s):
WU Xixiu1YANG Zhining1YAN Ge1WU Shipu2YU Guangzhao1
1. School of Automation,Wuhan University of Technology,Wuhan 430070,China; 2. Wuhan Branch,China Electric Power Research Institute,Wuhan 430074,China)
关键词:
SF6气体放电火花放电模型GIS隔离开关VFTO
Keywords:
SF6 gas dischargespark modelGISdisconnectorVFTO
DOI:
10.13296/j.1001-1609.hva.2019.04.001
摘要:
GIS隔离开关操作时,触头间SF6气体放电具有快速性、高频性和重复性特征。上述特性会对VFTO的 陡度、幅值等暂态特性产生重要影响。因此,建立隔离开关操作条件SF6气体高频放电模型对VFTO的精确 仿真而言十分重要。在已有试验研究结果基础上,论文分析了SF6气体放电不同阶段的阻抗变化规律,对比 了火花放电和开关操作条件下SF6气体放电之间的差异,发现Toepler模型、Barannik模型和Vlastos模型所描 述的阻抗变化规律与SF6气体放阻抗变化规律十分相似。为此,论文借鉴了火花放电模型的数学表达式。 在此基础上,根据采用SF6气体放阻抗变化规律,采用分段思想对火花放电模型的数学表达式进行改进,从 而建立了3种不同的SF6气体高频放电模型。为验证模型的正确性,将其应用于VFTO的仿真。结果表明仿 真计算值与VFTO的实测波形基本重合、幅值几乎相等,证明
Abstract:
Rapidity,high frequency and repeatability are the remarkable characteristics of SF6 gas discharge,which have important influneces on the transient characteristics of VFTO such as the rise time,amplitude and etc. There? fore,it is very important to set up the high frequency model of SF6 gas discharge for calculating VFTO accurately. Base on the exsiting experimental research,the impedance variation characteristics of SF6 gas discharge in different stage are anlayzed. The difference between spark discharge and SF6 gas discharge are compared as well. Further re? search and study indicates that Toepler model,Barannik model and Vlastos model show the similar discharge imped? ance change tendency with that of SF6 discharge under the condition of GIS disconnector operation. Then,the mathe? matical expression of spark models are used for reference. According to the impedance change tendency of SF6 gas discharge in different stage,the time segment method is adopted to improve the mathematical expression of Toepler model,Barannik model and Vlastos model respectively. Therefore,three high frequency SF6 discharge models are established,which can describe the SF6 discharge characteristics perfectly and completely. Moreover,to verify the validity of SF6 discharge model,VFTO is calculated by employing these SF6 discharge model respectively. And the results reveal that the waveform and amplitude of VFTO obtained by using these models almost coinciding with each other. Comparing these simulation results with the measurement data,it can be found that the calculated results show good agreement with experimental data.

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备注/Memo

备注/Memo:
收稿日期:2018?08?15; 修回日期:2018?10?08 基金项目:国家自然科学基金项目(51107093);强电磁工程与新技术国家重点实验室(华中科技大学)开放基金。 Project Supported by National Natural Science Foundation of China(51107093),State Key Laboratory Fund of Advanced Electromagnetic Engineering and Technology(Huazhong University of Science and Technology). 吴细秀(1976—),女,博士,副教授,主要从事高电压绝 缘、高压电器电磁仿真方面的研究工作。
更新日期/Last Update: 2019-04-16