基于矩量法和蝴蝶交配优化算法的甚低频发射天线顶线绝缘子均压环优化设计  

Optimal Design of Top⁃wires Insulator Grading Rings on VLF Transmitting Antenna Based on the Method of Moments and Butterfly Mating Optimization

作　　者：李斌[1] 柳超[1] 康颖 周诗嘉 张波 LI Bin;LIU Chao;KANG Ying;ZHOU Shijia;ZHANG Bo(Department of Electronic Engineering,Naval University of Engineering,Wuhan 430033,China;Southern Power Grid Science Research Institute,Guangzhou 510663,China;Naval Academy of Armament,Shanghai 200436,China)

机构地区：[1]海军工程大学电子工程学院,武汉430033 [2]南方电网科学研究院,广州510663 [3]海军装备研究院,上海200436

出　　处：《高压电器》2020年第5期94-100,106,共8页High Voltage Apparatus

基　　金：国家自然科学基金资助项目(41504029,61302099);湖北省自然科学基金(2015CFB174)。

摘　　要：针对甚低频发射天线顶线绝缘子串电压分布不均匀极易产生电晕的问题,采用矩量法(method of moments,MOM)研究了不同均压环管径、半径、抬高距以及绝缘子串配置位置对瓷支柱绝缘子串电压分布的影响,提出了一种应用矩量法和蝴蝶交配优化算法(butterfly mating optimization,BMO)协同优化顶线绝缘子串均压环的新方法。该方法首先建立顶线绝缘子串MOM天线优化模型;然后,提取仿真得到的分压和天线效率并计算目标函数;利用BMO迭代得到顶线绝缘子相对位置和均压环结构参数。仿真结果表明:顶线绝缘子高压侧的均压环半径和抬高距对绝缘子电压分布影响较大,低压侧配置均压环可以使顶线绝缘子串末端绝缘子的分压降低44.5%;与优化前实测值相比,优化后顶线绝缘子串的电压百分比均方差降低了2.17%,均压环最大表面电场小于起晕电场,天线辐射效率提升1.5%。Aiming at the uneven voltage distribution of the top⁃wires insulator string on a very low frequency trans⁃mitting antenna under high voltage,which can easily produce corona,the voltage distribution of the porcelain insula⁃tor string is calculated by the method of moments(MOM)for different tube diameters,radiuses,and elevation distanc⁃es of the grading ring and configuration positions of the insulator string.A novel method based on MOM and butterfly mating optimization(BMO)is proposed for optimizing the grading ring of the top⁃wires insulator string.First,an MOM⁃based antenna optimization model for the top⁃wires insulator string is established.Then,the voltage distribution and antenna efficiency are obtained by simulation,and the fitness function is calculated.BMO is used to iteratively opti⁃mize the deploying location and the grading ring structure of the top⁃wires insulator.Simulation results show that the radius and elevation distance of the grading ring on high⁃voltage side have great influences on the voltage distribution of the insulators.The partial voltage on the end of the insulator string can be reduced by 44.5%if deploys a grading ring on the low⁃voltage side.Compared with the measured values before optimization,the mean square error of voltage distribution of the optimized insulator strings decreases by 2.17%,the maximum surface electric field of the grading ring is less than the electric field of corona inception,and the radiation efficiency of the antenna increases by 1.5%.

关 键 词：甚低频发射天线 矩量法 瓷支柱绝缘子 电压分布 蝴蝶交配优化算法 

分 类 号：TM216[一般工业技术—材料科学与工程] TN827.1[电气工程—电工理论与新技术]