微型电脑应用

常规气体绝缘金属封闭输电线路(GIL)设备的膨胀位移监测方法主要依托随机森林算法，由于无法准确计算设备电流中倍频成分的含量大小，膨胀位移监测精度较低。为此，提出基于光纤光栅传感器的GIL设备膨胀位移监测方法。根据GIL设备的基本组成单元结构，分析设备的模态特性与机械振动特性，建立GIL设备结构的数学模型。引入奇偶次响应比确定电流中倍频成分的含量大小，结合不同负载电流下母线的振动图谱计算设备的负载电流变化量，以此为依据，采用光纤光栅传感器对设备的位移进行仿射变换，进而确定设备膨胀位移量。实验结果表明，所提出的方法能够准确地监测GIL设备膨胀位移，监测精度较高。

The conventional gas-insulated metal-enclosed transmission line(GIL) equipment expansion displacement monitoring method mainly relies on the random forest algorithm. Due to the inability of accurately calculation in the content of the frequency doubling component in the equipment current, the accuracy of expansion displacement monitoring is low. Therefore, a GIL equipment expansion displacement monitoring method based on fiber bragg grating sensors is proposed. Based on the basic unit structure of GIL equipment, the modal characteristics and mechanical vibration characteristics of the equipment are analyzed. A mathematical model of the GIL equipment structure is established. Odd-even response ratio is introduced to determine the content of the frequency doubling component in the current, and the load current variation of the equipment is calculated by combining the vibration spectra of the busbar under different load currents. Based on this, fiber bragg grating sensors are used to perform affine transformation on the displacement of the equipment, and then the expansion displacement of the equipment is determined. The experimental results show that the proposed method can accurately monitor the expansion displacement of GIL equipment, with high monitoring accuracy.