采用时域有限差分法（FDTD），建立了与实际高压开关柜尺寸比例为1∶1的精确模型，以场分布图的形式表现局部放电电磁波在开关柜复杂内部结构条件下的传播过程，并通过对比内部电气组件前后的信号特征，分析组件对电磁信号的衰减和畸变作用，从而实现对典型开关柜外表面测量点的TEV分布特性的仿真研究。结果表明：测量点靠近开关柜表面的缝隙处时可以获得较大的TEV幅值，TEV幅值随测量点与局部放电源之间距离的增大而减小。该精确仿真模型比传统的简化仿真模型更能体现出开关柜表面TEV信号的分布特性。
A precise simulation model, whose size is the same as actual switchgear, was established by the finite-difference time-domain (FDTD) method. The propagation process of PD electromagnetic wave in the switchgear with complex inner structure was revealed by field display, and the attenuation and dis-tortion effect of components on the electromagnetic signal were verified by comparing the characteristic of signal before and after through the internal electrical components. The TEV distribution characteristics of the outer surface of typical switchgear were simulated and verified. The results show that the larger TEV amplitude signal could be obtained when the detection point near the surface gap of switchgear, and the TEV amplitude decreases with the increase of the distance between detection point and PD power source. The accurate simulation model can reflect the distribution characteristic of TEV signal on the switchgear surface better comparing to the traditional simplified simulation model.
参考文献
| [1] | 邓雨荣,田树军,李锐鹏,胡华,邢雅,李洪杰.一种改进的10kV开关柜局部放电TEV检测及定位技术[J].绝缘材料,2014(02):93-96,101. |
| [2] | 唐炬,朱伟,孙才新,侍海军,魏钢.GIS局部放电的超高频检测[J].高电压技术,2003(12):22-23,55. |
| [3] | 王俊波,章涛,李国伟.在线检测10kV开关柜局部放电方法研究[J].绝缘材料,2011(06):60-64. |
| [4] | 关永刚,钱家骊.射频法在高压开关柜局放监测中的应用研究[J].高压电器,2001(05):1-3. |
| [5] | 任明,彭华东,陈晓清,董明.采用暂态对地电压法综合检测开关柜局部放电[J].高电压技术,2010(10):2460-2466. |
| [6] | 王有元,李寅伟,陆国俊,王劲,熊俊.开关柜局部放电暂态对地电压传播特性的仿真分析[J].高电压技术,2011(07):1683-1688. |
| [7] | 胡冉,张顺斌.10kV开关柜局部放电在线检测仿真分析及应用[J].广东电力,2011(08):87-90. |
| [8] | Hoshino T.;Maruyama S.;Sakakibara T. .Simulation of Propagating Electromagnetic Wave Due to Partial Discharge in GIS Using FDTD[J].IEEE Transactions on Power Delivery,2009(1):153-159. |
| [9] | 陈庆祺,张伟平,刘勤锋,马双,刘诣,张鸿平.开关柜局部放电暂态对地电压的分布特性研究[J].高压电器,2012(10):88-93. |
| [10] | 陈隽,刘文浩,卢军,陈敏,李军浩,李彦明.GIS中不同位置电晕放电的超声波信号特性[J].高电压技术,2011(12):3006-3011. |
| [11] | 葛德彪;闫玉波.电磁波时域有限差分法[M].西安:西安电子科技大学出版社,2005 |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%