声表面波在MOA比例单元中的热特性研究  

Research on thermal characteristics of SAW in MOA unit

作　　者：郭凤仪[1] 郭志勇[1] 刘志岭[1] 何维涛 陈占东 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛125105 [2]抚顺电瓷制造有限公司阀片试验室,辽宁抚顺113126

出　　处：《电工电能新技术》2013年第4期106-109,114,共5页Advanced Technology of Electrical Engineering and Energy

摘　　要：无间隙金属氧化物避雷器(MOA)的在线监测是保证电力系统可靠运行的重要措施,实时获取MOA的在线状态,成为避雷器在线监测的热点。本文在介绍避雷器常用测温方式的基础上,分析声表面波(SAW)温度传感器的测温原理并由此分析了SAW器件应用于避雷器在线监测的可行性,本文利用无线无源SAW温度传感器设计了MOA比例单元温度测量的应用方案,通过比例单元动作负载试验的热特性试验,验证了SAW技术应用于避雷器在线监测的正确性,改进了以往测试方式,提高了测量精度,对应用于MOA在线监测有重要的参考价值。Online monitoring of gapless metal oxide surge arresters （MOA） is an important measures to ensure the reliable operation of power system. To access the online status of the MOA is the hot spots of online monitoring. Onthe basis of introduction of commonly used temperature measurement method, the principle of surface acoustic wave （SAW） temperature measurement and its feasibility of application to online monitoring of arresters are analyzed. The paper designed the application scheme of temperature measurement of MOA proportional unit temperature meas urement using wireless passive SAW temperature sensors. The correctness of using SAW to online monitor the ar rester temperature is verified by heat performance test. The scheme improves the precision of previous test methods and has important effect for the online monitoring of MOA.

关 键 词：声表面波 MOA比例单元 热特性 动作负载试验 

分 类 号：TM932[电气工程—电力电子与电力传动]