基于FEKO建模的变电站电磁干扰研究

发布时间：2018-09-03 07:06

【摘要】：变电站是电力系统强电和弱电最集中的场所,电磁环境十分复杂。工频电流、雷击过电流、操作电流和冲击电流等会造成各种电磁干扰,而变电站中的设备和建筑等物体会对电磁辐射产生遮挡,折射和反射的作用使电磁干扰的情况变得更为复杂。所以,变电站内的电磁环境和站内物体对电磁辐射的传播影响值得深入研究。借助FEKO软件,将一段小导线构成的电偶极子作为干扰源,对单个电偶极子在自由空间中的辐射情况进行仿真和分析,在一台简化的变压器模型附近设置干扰源后,分析变压器附近的场强情况,再对经简化的变电站模型内不同位置设置干扰源的情况进行了仿真,得到干扰源在不同高度的水平面上产生的电场分布图像,由此分析干扰源对变电站的电磁干扰情况。
[Abstract]:Substation is the most concentrated place of strong and weak electricity in power system, and the electromagnetic environment is very complex. Power frequency currents, lightning overcurrents, operating currents and impulse currents can cause electromagnetic interference, while equipment and buildings in substations block electromagnetic radiation. The effects of refraction and reflection make electromagnetic interference more complicated. Therefore, the electromagnetic environment in the substation and the effect of the objects in the substation on the transmission of electromagnetic radiation are worthy of further study. With the aid of FEKO software, an electric dipole composed of a small conductor is used as an interference source, and the radiation of a single electric dipole in free space is simulated and analyzed. After the interference source is set near a simplified transformer model, Based on the analysis of the field intensity near the transformer, the interference source in different positions in the simplified substation model is simulated, and the electric field distribution image of the interference source on different horizontal plane is obtained. The electromagnetic interference of the interference source to the substation is analyzed.
【作者单位】：武汉大学电气工程学院;哈尔滨电工仪表研究所;国网大连供电公司;
【分类号】：TM63

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