高压开关柜隔离触头温度监测研究

针对高压开关柜的高压、强磁场工作环境，提出了基于光纤光栅传感器的隔离触头温度测量方案，实现了高压开关柜的触头温度监测。在方案中提出了空分和波分复用的光路系统，同时采用合理的安装技术解决了应变交叉敏感的影响，通过实验建立了隔离触头温度测量模型。在突然掉电的方式下对系统的抗电磁干扰能力进行了定性分析，测量显示温度曲线是渐变而不是突变的，说明系统具有很强的抗电磁干扰能力。通过对全天温度数据监测，系统能够正常工作，说明方案是可行的。

Research on Temperature Monitoring of Isolators in HV Switchgear

A resolution to measure temperature of HV(high voltage)switchgear has been brought forward,which is based on fiber Bragg grating temperature sensors and used in the circumstance of HV and powerful electromagnetic field.The system has completed the temperature monitoring of isolators in HV switchgear.In respect to the designation,the new optical circuit of space division multiplex and wavelength division multiplex has been put forward,the cross sensitivity of strain has been eliminated with the right fixing,and temperature model of isolator is founded.To analyze the ability to resist electromagnetic interference qualitatively,HV switchgear is power-on and power-off suddenly,the result is that the temperature curvy is not break,but smooth,which means that the system is powerful to resist electromagnetic interference.During a whole day's test,the system is normal,which means that the project is practicable.