Electromagnetic Wave Propagation Characteristics in Straight and L-Type Gas Insulation Switchgear

李军浩; 司文荣; 杨景岗; 黎大健; 李彦明

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Electromagnetic Wave Propagation Characteristics in Straight and L-Type Gas Insulation Switchgear

更新时间：2025-12-08

- Electromagnetic Wave Propagation Characteristics in Straight and L-Type Gas Insulation Switchgear
- Vol. 42, Issue 10, Pages: 1280-1284(2008)
- 作者机构：
  
  西安交通大学电气工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM835.4
- Online First：10 October 2008，
  
  Published：2008
- 稿件说明：
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李军浩, 司文荣, 杨景岗, et al. Electromagnetic Wave Propagation Characteristics in Straight and L-Type Gas Insulation Switchgear[J]. 2008, 42(10): 1280-1284.
DOI：

李军浩, 司文荣, 杨景岗, et al. Electromagnetic Wave Propagation Characteristics in Straight and L-Type Gas Insulation Switchgear[J]. 2008, 42(10): 1280-1284. DOI：

摘要

为了对GIS中局部放电的特高频电磁波信号的传播特性进行更深入的理解

使用FDTD算法对直线及L型GIS模型进行了仿真计算.对仿真信号进行时域和频域分析

对比了直线型和L型结构对电磁波传播的影响

研究了不同角度接收到的信号的差异.研究结果表明

对于直线型GIS

在腔体中相对激励源0°和180°的信号峰峰值呈衰减分布

总能量呈振荡平稳分布

而90°的信号峰峰值和总能量则呈平稳分布.对于L型GIS

由于L型结构的影响

经过L型结构后

在相对激励源0°和180°方向上信号能量和幅值会衰减70%左右

而在90°方向上会衰减50%左右

不同角度接收到的信号含有不同的电磁波模式.

Abstract

To profoundly understand the propagation characteristics of electromagnetic(E-M)signals from partial discharge in gas insulation switchgear(GIS)

the straight and L-type GIS models are established to carry out the simulation of the propagation characteristics with FDTD method

the result of which is then analyzed in time domain and frequency domain. The influences of the L-section as well as different receiving angles on the propagation characteristics of E-M wave modes are examined with comparison of straight GIS part. The results show that for the straight type the crest value of the received signal decreases at 0° and 180°

the whole energy is distributed in a smooth oscillation and the crest value and whole energy vary slightly at 90°. While for the L type GIS

the crest value and energy at 0°and 180° will decay for about 70% with a 50% decay occurring at 90°. The energy reflection and dispersion in L-section result in the decrease of the crest value and energy.

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Keywords

references

李信, 李成榕, 李亚莎,等. 有限时域差分法对GIS局部放电传播的分析[J]. 中国电机工程学报, 2005, 25(17):150-155.

LI Xin, LI Chengrong, LI Yasha,et al. Analysis on partial discharge in GIS by FDTD method [J]. Proceedings of the CSEE, 2005, 25(17):150-155.

黄兴泉, 康书英, 李泓志,等. GIS局部放电超高频电磁波的传播特性研究[J]. 高电压技术, 2006,32(10):32-35.

HUANG Xingquan, KANG Shuying, LI Hongzhi,et al. Simulation study on the characteristics of ultra-high frequency electromagnetic wave in GIS[J]. High Voltage Engineering, 2006,32(10):32-35.

黄兴泉, 康书英, 李泓志,等. GIS局部放电超高频检测法有关问题的仿真研究[J]. 电网技术, 2006,30(7): 37-63.

HUANG Xingquan, KANG Shuying, LI Hongzhi, et al,. Research on ultra-high-frequency method for detection of partial discharge in GIS[J]. Power System Technology, 2006,30(7): 37-63.

HIKITA M, OHTSUKA S, TESHIMA T. Electromagnetic(EM)wave characteristics in GIS and measuring the EM wave leakage at the space aperture for partial discharge diagnosis[J]. IEEE Trans Dielectr Electr Insul, 2007, 14(2): 453-460.

OKABE S, KANEKO S. Electromagnetic wave propagation in a coaxial pipe GIS model [J]. IEEE Trans Dielectr Electr Insul, 2007, 14(5): 1161-1169.

OKABE S, YUASA S, KANEKO S. Simulation of propagation characteristics of higher order mode electromagnetic wave in GIS [J]. IEEE Trans Dielectr Electr Insul, 2006, 13(4): 855-861.

OKABE S, KANEKO S. Partial discharge diagnosis method using electromagnetic wave mode transformation in gas insulated switchgear [J]. IEEE Trans Dielectr Electr Insul, 2007, 14(3): 702-709.

HIKITA M, OHTSUKA S, TESHIMA T. Examination of electromagnetic mode propagation characteristics in straight and L-section GIS model using FD-TD analysis [J]. IEEE Trans Dielectr Electr Insul, 2007, 14(6): 1477-1483.

朱建清.电磁波工程[M].长沙:国防科技大学出版社, 2005.

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