变电站内工频电磁场三维数值仿真研究  

Three-Dimensional Numerical Simulation of Power Frequency Electromagnetic Field Inside and Outside Substation

作　　者：杜志叶[1] 阮江军[1] 干喆渊[2] 阮祥勇[3] 荣荣[1] 聂靓靓 周蠡[1] 廖才波[1] 

机构地区：[1]武汉大学电气工程学院,湖北省武汉市430072 [2]国网电力科学研究院,湖北省武汉市430074 [3]安徽合肥供电公司,安徽省合肥市230002 [4]南方电网调峰调频发电公司检修试验中心,广东省广州市511400

出　　处：《电网技术》2012年第4期229-235,共7页Power System Technology

基　　金：国家自然科学基金项目(50977066)~~

摘　　要：高压变电站内外工频电磁环境的评估日益重要。将三维建模软件Solidworks同电磁场分析软件Ansoft相结合,实现了大模型、复杂电磁问题的三维数值分析。根据某110 kV变电站设计图,建立电气设备三维仿真模型,对变电站户外区域离地1.5 m高度处工频电磁场进行了仿真和分析。仿真结果表明,该110 kV变电站内、外工频电磁场数值均在标准限值以内。在工作走廊上,计算值同实测结果变化趋势一致;在电气设备不太密集的区域,工频电场计算值与实测值之间误差低于10%。文中所用方法给变电站电磁环境评估问题提供了一个良好的解决方案。The calculation and assessment on power frequency electromagnetic field inside and outside high voltage substation become important increasingly. Combining three-dimensional modeling software Solidworks with electromagnetic field analysis software Ansoft, the three-dimensional numerical simulation of large-scale complicated electromagnetic problem is implemented. Based on the design drawing of a certain ll0 kV substation, a three-dimensional simulation model, in which the overhead line, overhead bus, power transformer, building and grounded metal pillar are included, is built by Solidworks software, and then the built model is utilized in Ansoft to perform Maxwell three-dimensional simulation of power frequency electrical field and magnetic field at the height of 1.5 m above ground of the outdoor area of the substation. Simulation results show that the power frequency electric field strength and the power frequency magnetic field strength inside and outside this 110 kV substation are within the limits specified in the standard. At the working corridor, the variation trend of simulation results conforms to the measured results; and in the area where the power equipments are not so intensive, the error between the calculated power frequency electric field strength and the measured power frequency electric field strength is lower than 10%. The proposed method is available for reference to the evaluation and assessment of electromagnetic environment of substation.

关 键 词：三维模型 变电站 工作走廊 工频电场 工频磁场 电磁环境 

分 类 号：TM15[电气工程—电工理论与新技术]