利用激光诱导击穿光谱检测光纤传感高速电机故障

Fault detection of optical fibre sensing high-speed motor using laser-induced breakdown spectroscopy

为解决传统电机故障检测方法中存在的无法检测因绝缘材料老化导致的电机漏电等故障问题,提出利用激光诱导击穿光谱检测光纤传感高速电机故障方法。选取新、旧两种高速电机设备中硫化硅橡胶,通过烧蚀操作分析高速电机设备中硫化硅橡胶烧蚀特性、等离子体温度、电子数密度、光谱强度间参数关系,选取新、旧两份室温硫化硅橡胶,通过烧蚀操作,对比烧蚀特性、等离子体温度、电子数密度、光谱强度间参数关系,完成光纤传感高速电机故障检测。实验结果表明,在等离子体冲击波特性差异和激光烧蚀质量的变化影响下,硫化硅橡胶AI元素含量随老化程度的加深而减少;Na元素随着老化程度的增加而增加,验证了所提方法能够明确绝缘材料是否处于老化失效状态,有效检测光纤传感下高速电机的故障问题。

In order to solve the problem of motor leakage caused by ageing insulation materials in traditional motor fault detection methods,this paper presents a method of detecting high-speed motor faults with an optical fibre sensor using a laser-induced breakdown spectrum.Selection of new and old two vulcanisation silicone rubber in high-speed motor equipment,high-speed through the analysis of the ablation operating electrical equipment vulcanisation silicone rubber in the ablation characteristics,plasma temperature and electron number density,spectral intensity relationship between parameters,selection of new and old two-room temperature vulcanised silicone rubber,through the ablation,contrast the ablation characteristics,plasma temperature and electron number density,the relationship of the parameters between spectral intensity,optical fibre sensing high-speed motor fault detection.The experimental results show that under the influence of the difference of plasma shock wave characteristics and the change of laser ablation quality,the content of AI element in silicone rubber decreases with the increase of ageing degree.The Na element increases with the ageing degree,verifying that the proposed method can determine whether the insulation is in the ageing failure state and effectively detect high-speed motor fault under optical fibre sensing.