基于GA-CSM算法的220kV户内变电站电场分析  

Electric field analysis of 220 kV indoor substation based on GA-CSM

作　　者：李小娟 何巍 汤一尧 高世刚 谢延凯 梁文辉 LI Xiaojuan;HE Wei;TANG Yiyao;GAO Shigang;XIE Yankai;LIANG Wenhui(State Grid Gansu Electric Power Science Research Institute,Lanzhou 730070,China;State Key Laboratory of Transmission and Distribution Equipment and System Safety and New Technology,Chongqing University,Chongqing 400030,China)

机构地区：[1]国网甘肃省电力公司电力科学研究院,甘肃兰州730070 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030

出　　处：《中国测试》2023年第6期166-171,共6页China Measurement & Test

摘　　要：传统的模拟电荷法需要人工布点,而为得出更准确的计算结果,人工布点往往需要多次调整模拟电荷的参数,对于场源复杂的情况实行起来较为困难,而优化算法则可以自动寻找最优参数。变压器对户内变电站的工频电场整体分布影响较大,采用遗传算法优化模拟电荷法对户内变电站的变压器区域和限流电抗器室进行计算。结果表明,计算时间加快45.13%,线路和设备与外墙的电位误差分别降低97.97%与64.03%,其中线路电位误差降低得较为显著。变压器室在距离地面1.5 m高的平面上工频电场分布在5.97~278.54 V/m之间,限流电抗器室1.5 m高的电场整体分布在4.86~651.88 V/m之间,均没有超过我国工频电场公众暴露限值。计算结果与测量结果较为吻合,可为在设计阶段优化变电站工频电场分布提供参考。The traditional analog charge method requires manual distribution of points.In order to obtain more accurate calculation results,the parameters of analog charge often need to be adjusted many times.It is difficult to implement in the case of complex field source,and the optimization algorithm can automatically find the optimal parameters.The transformer has a great impact on the overall distribution of power frequency electric field in indoor substation.The transformer area and current limiting reactor room of indoor substation are calculated by using genetic algorithm optimized simulated charge method.The calculation results show that the calculation time is accelerated by 45.13%by using genetic algorithm optimized simulated charge method,The potential errors on the line,equipment and external wall are reduced by 97.97%and 64.03%respectively,among which the potential error on the line is significantly reduced.The power frequency electric field in the transformer room is distributed between 5.97-278.54 V/m on the plane 1.5 m high from the ground,and the 1.5 m high electric field in the current limiting reactor room is distributed between 4.86-651.88 V/m as a whole,which does not exceed the public exposure limit of power frequency electric field in China.The calculated results are in good agreement with the measured results,which can provide a reference for optimizing the power frequency electric field distribution of substation in the design stage.

关 键 词：变电站 变压器 模拟电荷法 遗传算法 电抗器 工频电场 

分 类 号：TM12[电气工程—电工理论与新技术]