摘要
详细计算直流输电线路下方人员活动及线下存在建筑物的合成电场分布时,迫切需要进行三维离子流场计算。提出一种可计算双极三维离子流场的数值计算方法——三维上流有限元法。该方法首先应用于同轴圆柱、同心球壳的离子流场算例,计算结果与解析解吻合得很好。然后将其应用于直流输电线下存在建筑物情况下的合成电场计算,模拟实验结果证明了算法的有效性,同时计算过程表明该算法具有良好的收敛性。该方法亦适用于其他领域类似问题的计算。
In order to analyze total electric field with people or buildings below high voltage direct current（HVDC） lines in detail,three-dimensional ionized field calculation is urgently needed.Three-dimensional upstream finite element method,which could be applied for two poles 3D ionized field calculation,is proposed in this paper.Firstly,the method is used to calculate ion flow field of coaxial cylinder and concentric sphere model,and the numerical results agree very well with the analytical solutions.Then,it is applied to calculate the total electric field with building below HVDC lines,and its validity is proved by the simulation experiment results.At the same time,the method shows good convergence in the calculation procedure.It can be used to solve similar problems in other domain.
出处
《电工技术学报》
EI
CSCD
北大核心
2011年第4期153-160,共8页
Transactions of China Electrotechnical Society
基金
国家自然科学基金重点项目(51037001)
国家重点基础研究发展计划(973项目)(2011CB209401)
中央高校基本科研业务费专项基金(09TG01)资助项目
关键词
直流输电
三维
合成电场
有限元
HVDC
three dimension
total electric field
FEM
