摘要
用模拟电荷法计算高压交流输电线路附近有建筑物时的工频电场,需要在建筑物表面及其附近地面设置若干个模拟电荷和匹配点。由于正六边形是无重叠、无空隙覆盖平面区域的最优形状,因此采用蜂窝状网格划分建筑物表面,进而设置模拟电荷。仿真结果表明,与传统的正方形格状划分相比,在精度相同的前提下,该划分方式可以有效减少模拟电荷的数量,提高计算速度。针对传统的模拟电荷均匀设置的方式,提出在场强变化大或感兴趣的区域将划分网格缩小,反之增大的方案,仿真结果证明了该方案可以进一步改善计算精度和减少模拟电荷的数量。
To calculate power frequency electric field of high voltage transmission line with buildings underneath it by charge simulation method（CSM）,it is necessary to set several simulation charges and matching points on the surfaces of buildings and ground near to them.In view of the fact that regular hexagon lattice is an optimal form to cover a plane area without overlaps and gaps,so the building surface is divided by regular hexagon lattice to set the simulation charge.Simulation results show that compared with square lattice-based division,under the premise of the same accuracy the regular hexagon lattice-based division can effectively decrease the amount of simulation charge and accelerate the calculation.For the traditional way of setting simulation charge uniformly,an improved scheme is proposed,that is,in the area,where the field strength is interested or varies obviously,the size of dividing lattice can be reduced,or vice verse.Simulation results prove that the proposed scheme can improve the calculation accuracy and reduce the amount of simulation charges further.
出处
《电网技术》
EI
CSCD
北大核心
2013年第3期788-793,共6页
Power System Technology
基金
国家环保部公益性行业科研专项经费资助项目(200909106)~~
关键词
输电线路
模拟电荷法
建筑物
工频电场强度
蜂窝状网格
transmission line
charge simulation method（CSM）
building
power frequency electric field intensity
regular hexagon grid lattice
