摘要
电力物联网中高压输电线路在线监测设备是电网状态监测的重要设施,为保障监测传感器正常稳定工作,设计了一套远距离一对多无线电能传输系统,在不改变线路原有绝缘状态的前提下满足了空间多目标电能供应。首先,基于等效电路模型,分析了一对多无线电能传输系统的特性,提出多接收端负载阻抗匹配的效率优化措施;随后,依据110 kV输电线路参数,设计了最优磁耦合机构参数,并优化了磁芯结构;最后,搭建实验平台,给出远距离无线传输的传输距离、偏移角度和负载阻值的最优适配参考范围,验证了远距离一对多无线电能传输的可行性,提供了一种改善无线电能传输效率的有效方案。
Online monitoring equipment for high-voltage transmission lines in the power internet of things is an important facility for grid state monitoring.In order to ensure the normal and stable operation of monitoring sensors,a long-distance one-to-many wireless power transfer(WPT)system is designed in this paper.It meets multi-objective power supply in space without changing the original insulation state of the line.Firstly,based on the equivalent circuit model,the characteristics of one-to-many WPT are analyzed,and the efficiency optimization measures of multi receiver load matching are proposed.Then,according to the parameters of a 110 kV transmission line,the optimal parameters of magnetic coupling mechanism and the optimal structure of the magnetic core are designed.Finally,an experimental platform is built,and the optimal reference range of transmission distance,offset angle and load resistance value of long-distance WPT are given.The feasibility of the long-distance one-to-many WPT is verified,and an effective scheme to improve the transmission efficiency is provided.
作者
陈艳霞
吕立平
王雪
周阳
李佳
李鑫明
陈迎霞
金颖
CHEN Yanxia;LÜLiping;WANG Xue;ZHOU Yang;LI Jia;LI Xinming;CHEN Yingxia;JIN Ying(Electric Power Research Institute,State Grid Beijing Electric Power Company,Beijing 100031,China;State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430077,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;State Grid Hubei Macheng Power Supply Company,Macheng 438300,China)
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2023年第5期584-591,共8页
Engineering Journal of Wuhan University
基金
国家电网公司科技项目(编号:52022319003W)。
关键词
磁共振
磁芯
传输效率
结构优化
无线电能传输
magnetic resonance
magnetic core
transmission efficiency
structure optimization
wireless power transfer
