微型宽频交流电场传感器设计及其电场无失真测量评价  

Design of Micro-Broadband AC Electric Field Sensor and Evaluation of Electric Field Distortion-Free Measurement

作　　者：高吉普 吴世林 张缘圆 刘新霆 辛明勇 胡军[2] GAO Jipu;WU Shilin;ZHANG Yuanyuan;LIU Xinting;XIN Mingyong;HU Jun(Electric Power Research Institute of Guizhou Power Grid Co.,Ltd.,Guiyang 550002,China;Department of Electrical Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]贵州电网有限责任公司电力科学研究院,贵阳550002 [2]清华大学电机系,北京100084

出　　处：《南方电网技术》2024年第5期31-38,共8页Southern Power System Technology

基　　金：国家自然科学基金资助项目(52125703,52307177);贵州电网有限责任公司科技项目(0666002022030103XT00014)。

摘　　要：电场信息是新型电力系统状态智能感知、信息深度融合的基础。电场测量需兼顾无失真、微型宽频、强稳定性、易集成等众多性能需求。针对新型电力系统数字化发展需求,对地线侵入造成的电场测量误差来源进行分析,提出了微型宽频交流电场传感器设计方案和电场无失真测量方法,开展了无失真电场传感器设计,并与微机电系统(microelectro mechanical systems,MEMS)和光学电场传感器进行了无失真测量效果对比。结果表明MEMS电场传感器向上偏移间隙中心2 cm时电场测量误差为13.2%,光学电场传感器的电场测量误差在3%左右。无失真电场传感器的测量误差均在2%左右,且不随传感器的偏移距离而增大或减小,实现了地线干扰的隔离效果,且电场无失真程度优于光学电场传感器。Electric field information is the foundation of intelligent perception and deep integration of information in the new power system.Electric field measurement needs to take into account many performance requirements such as no distortion,micro-broad eband,strong stability and easy integration.In response to the demand for digital development of the new power system,the sources of electric field measurement errors caused by ground wire intrusion are analyzed.A micro-broadband AC electric field sensor design scheme and an electric field distortion-free measurement method are proposed.The design of a distortion-free electric field sensor is carried out,and the distortion-free measurement effect is compared with microelectro mechanical systems(MEMS)and optical electric field sensors.The results show that when the MEMS electric field sensor is offset 2 cm upwards from the center of the gap,the electric field measurement error is 13.2%,and the electric field measurement error of the optical electric field sensor is about 3%.The measurement error of the undistorted electric field sensor is around 2%,and it does not increase or decrease with the offset distance of the sensor,achieving the isolation effect of ground wire interference,and the degree of undistorted electric field is better than that of optical electric field sensors.

关 键 词：微型宽频 电场测量 传感器 无失真测量 

分 类 号：TM73[电气工程—电力系统及自动化]