直流输电线路下方建筑物附近离子流场的计算  

Calculation of the Ionized Field Under DC Transmission Lines With Buildings Nearby

作　　者：黄国栋[1] 阮江军[1] 杜志叶[1] 余世峰[2] 赵常威[1] 荣荣[1] 王国利 

机构地区：[1]武汉大学电气工程学院,湖北省武汉市430072 [2]国家电网公司直流建设分公司,北京市西城区100052 [3]特高压工程技术(昆明广州)国家工程实验室,广东省广州市510080

出　　处：《中国电机工程学报》2012年第4期193-198,1,共6页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973项目)(2011CB209404);特高压工程技术(昆明;广州)国家工程实验室开放基金项目~~

摘　　要：直流输电线路下方建筑物附近电场分布复杂,基于Deutsch假设计算建筑物附近的离子流场在理论上会造成较大的误差,同时无法考虑风速的影响。基于上流有限元方法计算直流模拟试验线路下方房屋模型附近的离子流场,采用新型的迭代收敛控制技术,保证了迭代收敛过程的稳定性。计算结果与试验数据进行对比,得到了很好的验证。结果表明上流有限元方法适用于直流线路下方建筑物附近离子流场的计算。考虑风速的影响,计算建筑物附近离子流场,发现风速对建筑物附近合成场强以及离子流密度的影响很大,因此在计算直流输电线路下方建筑物附近电磁环境时,必须考虑风速对离子流场的影响。The electric field around the building under DC transmission lines is so complex that the calculation method based on the Deutsch assumption which cannot consider the effect of the wind when solving the ionized field near the building would result in large errors theoretically.Based on the upstream finite element method（FEM）,a new iterative controlling method was used to calculate the ionized field around the building model under a DC test line.The iteration was efficiently convergent,and the calculation result agreed well with the measured data,which indicates that the method based on the upstream FEM method is valid for solving the ionized field under DC transmission lines with buildings nearby.Taking the wind velocity into account,the ionized field of the test line was calculated,and it was found that the effect of the wind on the electric field around the building is remarkable,thus the effect should be considered when calculating the electromagnetic environment under DC transmission lines with buildings nearby.

关 键 词：直流输电线路 上流有限元法 建筑物 离子流场 风速 

分 类 号：TM83[电气工程—高电压与绝缘技术]