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为了对GIS母线运行状态提供一种有效的监测手段,提出了一种利用光纤光栅作为传感器的GIS母线温度监测方案.根据光纤光栅增敏原理,对比了几种不同增敏方案,设计了高性能的光纤光栅温度传感器,完成了GIS母线温度在线监测系统硬、软件设计.率定结果表明,光栅温度传感器灵敏度达到30pm/℃,迟滞低于10pm.温度标定实验与现场运行情况表明,该系统测温精度较高,系统运行稳定,能够准确监测GIS母线温度变化,提高了GIS安全运行水平.
In order to provide an effective monitoring method for the running status of GIS bus, a temperature monitoring scheme of GIS bus using FBG as sensor is proposed.According to sensitization principle of FBG, several different sensitization schemes are compared and high performance Of the optical fiber grating temperature sensor, completed GIS bus temperature online monitoring system hardware and software design.The calibration results show that the grating temperature sensor sensitivity of 30 pm / ℃, hysteresis of less than 10pm temperature calibration experiments and field operation shows that the system test High temperature accuracy, the system is stable, can accurately monitor the GIS bus temperature changes, improve the safe operation of GIS level.