基于声表面波技术的配电网架空线温度无源无线监测系统  

Passive-wireless temperature monitoring system based on SAW technology for overhead transmission line in distribution network

作　　者：林金树 吴润发 Lin Jinshu;Wu Runfa(State Grid Sanming Power Supply Company,Sanming 365000,China;OFWelt(Suzhou)Technologies Co.,Ltd.,Suzhou 215123,China)

机构地区：[1]国家电网三明供电公司,三明365000 [2]劭行(苏州)智能科技有限公司,苏州215123

出　　处：《电子测量技术》2020年第13期167-171,共5页Electronic Measurement Technology

基　　金：江苏省科技项目重点研发计划(SBE2017031332)项目资助。

摘　　要：针对当前配电网架空线路温度监测方法的缺陷,提出了基于声表面波(surface acoustic wave,SAW)传感技术的输电线路温度无源无线监测系统。SAW温度传感器的纯无源特性避免了电源的使用,具有耐受高温和高电压的优秀性能,适合电力系统设备测温。通过对SAW传感器设计与之匹配的弹簧天线,实现了阅读器与传感器之间无线信号的可靠传输。设计基于软件无线电技术的阅读器,有效实现了信号发生,回波信号采集和数据处理功能。测试结果表明,SAW无源无线温度监测系统能够安全、实时、准确地监测架空线路线夹处温度变化。Aiming at the shortcomings of current monitoring methods for overhead line temperature, a passive wireless monitoring system for transmission line temperature based on Surface Acoustic Wave(SAW) sensing technology is proposed. The pure passive nature of the SAW temperature sensor avoids the use of power supplies and has excellent performance against high temperatures and high voltages,which is suitable for temperature measuring of devices in electrical power system. Through the inverted F antenna designed to match the SAW sensor, the reliable transmission of wireless signals between the reader and the sensor is realized.A reader based on software radio technology was designed to realize signal generation, echo signal acquisition and data processing. The test results show that the SAW temperature sensor can safely measure the temperature change of the overhead line clamp in real time and accurately.

关 键 词：声表面波 无源无线 配电网 架空线路 温度传感 

分 类 号：TN98[电子电信—信息与通信工程]