基于光纤光栅的气体绝缘开关母线温度在线监测系统  

Online temperature monitoring system based on FBG for GIS bus

作　　者：吴晓文[1] 舒乃秋[1] 李洪涛[1] 金向朝[2] 谢志杨[2] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072 [2]广东电网公司佛山供电局,广东佛山528000

出　　处：《电力自动化设备》2013年第4期155-160,共6页Electric Power Automation Equipment

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB724500)~~

摘　　要：提出了一种基于光纤光栅测温技术的气体绝缘开关(GIS)母线温度在线监测方法,设计了高性能的光纤光栅温度传感器以及波长解调系统,由工控机实现波长自动采集、波长温度转换、数据存储以及故障预警,通过实时监测母线温度变化趋势实现对母线的发热状态进行评估。所研制的在线监测系统已在广东电网投入运行,运行结果表明,该系统具有较高的测温精度,能够有效监测GIS母线温度及其变化趋势。A method of online temperature monitoring based on FBG（Fiber Bragg Grating） technique is proposed for GIS（Gas Insulated Switchgear） bus,which evaluates the thermal state of GIS bus according to the variation tendency of its temperature. The FBG sensor with high performance and the optic wavelength demodulation system are designed. An industrial computer is applied to automatically collect the optic wavelength and carries out the wavelength-temperature conversion,data storage and fault alarming. Practical application in Guangdong Power Grid shows that,with high accuracy,the designed system monitors the temperature of GIS bus and its variation effectively.

关 键 词：气体绝缘开关 母线 温度 过热 光纤光栅 监测 发热状态 

分 类 号：TM930.1[电气工程—电力电子与电力传动]