基于多元状态感知监测技术的快速灭弧开关故障在线监测

现有快速灭弧开关故障在线监测方法缺乏足够的数据积累,在大数量快速灭弧开关情况下存在着故障监测实时性差的缺陷,为此提出基于多元状态感知监测技术的快速灭弧开关故障在线监测方法研究;通过多元状态感知监测技术合理布置振动传感器,获取快速灭弧开关多元振动信号,利用小波变换方法降噪处理开关多元振动信号,以此为基础,提取灭弧开关多元振动信号特征因子;求取多元特征因子权重,得到灭弧开关融合特征向量,构建故障诊断模型,通过灭弧开关故障诊断实现了快速灭弧开关故障的在线监测;通过测试结果显示:与现有代表方法相比较,提出方法在大数量快速灭弧开关情况下,快速灭弧开关故障监测时间较短,具备更好的实时性,适合大力推广使用。

On line fault monitoring of fast arc extinguishing switch based on multi state perception monitoring technology

The existing on-line fault monitoring methods of fast arc extinguishing switches lack of sufficient data accumulation, and there is a defect of poor real-time fault monitoring in the case of a large number of fast arc extinguishing switches. Therefore, the research on on-line fault monitoring method of fast arc extinguishing switches based on multiple state perception monitoring technology is proposed. The multi-element vibration signal of the fast arc extinguishing switch is obtained by arranging the vibration sensor reasonably with the multi-element state sensing monitoring technology, and the multi-element vibration signal of the switch is denoised by the wavelet transform method. On this basis, the characteristic factors of the multi-element vibration signal of the arc extinguishing switch are extracted. The multi-element characteristic factor weight is obtained, the fused characteristic vector of arc extinguishing switch is obtained, the fault diagnosis model is constructed, and the online fault monitoring of arc extinguishing switch is realized through the fault diagnosis of arc extinguishing switch. The test results show that: compared with the existing representative methods, the proposed method has shorter fault monitoring time and better real-time performance in the case of large number of fast arc extinguishing switches, which is suitable for vigorously promotion and use.