摘要
研究了不同架空高度及弧垂影响下输电线工频磁场三维优化的计算方法问题.先根据分裂导线参数、相间导线距离等确定输电线路的分布参数、波阻抗与输电线电流,再由Biot-Savart定律,推导出架空导线在空间所产生的三维工频磁场强度算法.实测结果表明,不同的架空高度对磁场强度的影响十分明显.最后通过MATLAB仿真计算,阐明实际情形下高压输电线路附近产生的工频磁场的分布规律.
Three dimensional optimization prediction model of power frequency magnetic field of transmission lines under different overhead height and arc sag is proposed. According to the parameters of the bundle conductors and conductor interphase distance, the transmission lines and distribution parameters of wave impedance are obtained, as well as the transmission line current. Then according to the Biot-Savart law, overhead line conductors are derived in the space generated three-dimensional power frequency magnetic field intensity algorithm. Simulation calculation of the magnetic field distribution shows the qualitative rules： different overhead heights effect on the magnetic field strength is also very obvious. Through the simulation calculation, it is clarified the situation under high voltage transmission line near power frequency magnetic field distribution.
出处
《东北师大学报（自然科学版）》
CAS
CSCD
北大核心
2017年第4期43-48,共6页
Journal of Northeast Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(11271067)
关键词
高压输电线路
工频磁场
架空高度
镜像法
high voltage transmission lines
power frequency magnetic field,aerial height
image method
