优化模拟电流法计算超高压输电线路三维磁场  

Three-dimensional magnetic field calculation method for EHVtransmission line by optimized simulation current method

作　　者：欧阳文安 张菁[1] 胡进才 王大龙 吕伟 Ouyang Wenan;Zhang Jing;Hu Jincai;Wang Dalong;Lv Wei(College of Electronic and Electrical Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学电子电气工程学院,上海201620

出　　处：《电子测量与仪器学报》2021年第12期151-157,共7页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(61705127,61902237)项目资助。

摘　　要：为了获得更准确的输电线路下方磁场的三维分布,使用智能优化算法对模拟电流法中模拟电流的个数与位置参数进行寻优,解决了普通模拟电流法中模拟电流的位置和个数只能依靠经验来确定的问题,从而提高计算精度。建立基于输电线路实际物理形状的三维计算模型,通过不同方法计算上海市松江区洞泾-泗泾500 kV线路的三维磁场分布。将计算结果与实际测量结果进行对比,结果表明优化模拟电流法的计算误差为4.54%,比传统计算方法的12.21%降低了7.67%。为优化模拟电流法计算输电线路的磁场分布提供理论基础,并对高压输电线路的建设有理论指导意义。In order to obtain a more accurate three-dimensional distribution of the magnetic field under the transmission line,an intelligent optimization algorithm is used to optimize the number and position parameters of the simulated current in simulation current method,which solves the problem that the position and number of the simulated current in the normal simulation current method can only be determined by experience,so as to improve the calculation accuracy.A three-dimensional calculation model based on the actual physical shape of transmission lines was established to calculate the three-dimensional magnetic field distribution of Dongjing-Sijing 500 kV line in Songjiang district,Shanghai by different methods.By comparing the calculation results with the actual measurement results,the results show that the calculation error of the optimized simulation current method is 4.54%,which is 7.67%lower than the 12.21%of the traditional calculation method.It provides a theoretical basis for optimized simulation current method to calculate the magnetic field distribution of transmission lines,and has a theoretical guiding significance for the construction of high-voltage transmission lines.

关 键 词：超高压输电线路 三维磁场计算 模拟电流法 实测数据 

分 类 号：TM937[电气工程—电力电子与电力传动] TN06[电子电信—物理电子学]