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分析了高压电器内部温度监测方法现状 ,针对目前这一领域内存在的测温精度低 ,长期工作稳定性差等问题 ,提出了一种频分复用光纤传感器的结构形式。并详细分析了传感器系统的工作原理 ,给出了系统的数学模型 ,对系统特性进行了实验研究。实验表明 ,该测温方法完全可以实现对高压电器内部温度的实时在线监测 ,该测温方案是切实可行的。
The status quo of the internal temperature monitoring method for HV electrical appliances is analyzed. In view of the problems such as the low accuracy of temperature measurement and the poor stability of long-term work in this field, a structure of frequency-division multiplexing optical fiber sensor is proposed. The working principle of the sensor system is analyzed in detail. The mathematical model of the system is given and the system characteristics are experimentally studied. Experiments show that the temperature measurement method can realize real-time on-line monitoring of the internal temperature of high-voltage electrical appliances. The temperature measurement scheme is feasible.