35kV三相空心电抗器组的磁场分布  

Magnetic Field Distribution Around 35kV Three-phase Air-core Reactors

作　　者：杜华珠[1] 文习山[1] 鲁海亮[1] 姜志鹏[1] 

机构地区：[1]武汉大学电气工程学院,武汉430072

出　　处：《高电压技术》2012年第11期2858-2862,共5页High Voltage Engineering

摘　　要：干式空心电抗器产生的强磁场是变电站内电磁污染的主要来源。为此,总结分析了现有的空心电抗器磁场计算方法,并基于场-路耦合计算模型对三相干式空心电抗器组建立了仿真模型。对35kV品字形排列电抗器组进行仿真计算,计算结果与该电抗器组测量值相符。研究得出了三相空心电抗器组的安装高度和相间距离对周围工频电磁场分布的影响:电抗器周围的磁感应强度随着支柱高度的增加而降低,但仅限于距离电抗器较近的范围内;增大相间距离,对电抗器周围工频磁场的分布改善较小,反而增加了电抗器所需要的安装面积和泄漏磁场的分布范围,对于改善泄漏磁场分布并没有较大的实用价值。The main source of electromagnetic pollution in substations is the magnetic field generated by dry-type aircore reactors.Thus existing calculation methods of air-core reactors are summarized,and a simulation model of three-phase dry-type air-core reactor group was proposed for calculation of magnetic fields based on coupled fieldcircuit model.A calculation of the 35kV triangle-arranged reactor group was made,and the calculation results agreed well with the measured values of the reactor set.Therefore,the influence of the stanchion altitude and the inter-phase distances of the three-phase dry-type air-core reactor group on the surrounding power frequency magnetic field distribution are gained：the magnetic induction intensity around and nearby the reactor group reduces effectively with the stanchion altitude increasing;the increase in the inter-phase distances has small impact on reducing reactor magnetic induction intensity,but expands the magnetic induction intensity distribution＇s scope and storage area of reactors,that is to say,it has little sense for reducing reactor magnetic induction intensity.

关 键 词：空心电抗器 品字形排列 场-路耦合模型 电磁环境 工频磁场 变电站 

分 类 号：TM47[电气工程—电器]