基于λ/2微波同轴谐振腔的绝缘油微水测量传感器设计  

Design of Insulating Oil Moisture Sensor Based onλ/2 Microwave Coaxial Resonator

作　　者：葛利宏 李丹阳 胡学超 关瑾 陈峣 钱江波[3] GE Lihong;LI Danyang;HU Xuechao;GUAN Jin;CHEN Yao;QIAN Jiangbo(Inner Mongolia Power(Group)Co.,Ltd.,Hohhot 010010,China;Inner Mongolia Power(Group)Co.,Ltd.,Inner Mongolia Power Research Institute Branch,Hohhot 010020,China;North China Electric Power University,Baoding 071000,China)

机构地区：[1]内蒙古电力(集团)有限责任公司,呼和浩特010010 [2]内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司,呼和浩特010020 [3]华北电力大学,河北保定071000

出　　处：《内蒙古电力技术》2023年第3期91-96,共6页Inner Mongolia Electric Power

基　　金：内蒙古电力(集团)有限责任公司科技项目“基于微波测量技术的电力变压器绝缘油微水在线监测系统开发”(2022-34)。

摘　　要：针对变压器绝缘油微水测量不准确造成的变压器故障,通过理论推导、数值仿真和实验测量,设计了λ/2微波同轴谐振腔传感器,利用HFSS仿真软件对同轴谐振腔进行仿真设计,同时进行了绝缘油微水测量实验,得出当微水体积分数小于50×10^(-6)时,测量误差在2%以内,验证了同轴谐振腔传感器测量变压器绝缘油微水的可行性,实现了绝缘油微水的精准监测。Aiming at the transformer faults caused by inaccurate measurement of the insulating oil moisture content in the transformer,aλ/2 microwave coaxial resonator sensor is designed through theoretical derivation,numerical simulation and experimental measurement.At the same time,HFSS simulation software is used to simulate and design the coaxial resonator,and the insulating oil moisture measurement experiment is carried out.The results show that when the moisture content is less than 50×10^(-6),the measurement error is less than 2%,which verifies the feasibility of measuring transformer insulating oil moisture with coaxial cavity sensor and realizes accurate monitoring of insulating oil moisture.

关 键 词：变压器 绝缘油 微水测量 同轴谐振腔 介电常数 

分 类 号：TM41[电气工程—电器]