高压开关设备的温度在线监测研究

Study on on-line Temperature Monitoring of HV Switches

由于高压开关触点、母线处于高电位,直接检测其温度一直是电力系统检测中的难题。结合光纤的优良特性设计了基于位移-光强度调制型光纤温度传感器。它具有结构小、系统简单的优点,对传感头的结构进行了设计,并给出了数学模型。实验结果表明,该方案是可行的,在空间狭小、强电磁场、易燃、易爆等恶劣环境中具有极好的应用价值。

Due to the contacts and bus of the high voltage switch lies in high potential, it is difficult to detect their temperature directly. Combined with good characteristic of optical fiber, optical fiber temperature sensor is designed based on displace-intensity modulated, which has advantage with simple structure and system. The sensor＇s mathematics model is provided. The result of experiment shows that this scheme is feasible, and suitable to be used under the conditions such as narrow space, strong electromagnetic field, combustible and explosible sites and so on.