|
|
|
| Wavelet denoising analysis of arc signals |
| Mi Zhengying, Wang Yu, Wang Lidong, Zhang Tingting |
| State Grid Tianshui Power Supply Company, Tianshui, Gansu 741000 |
|
|
|
|
Abstract Using wavelet denoising method to analyze arc signal is an important aspect of applying wavelet analysis to practical engineering. Wave transform is with the characteristics of multi-resolution, as well as the ability to characterize the local characteristics of signals in both time and frequency domains. It is suitable for analyzing non-stationary signals and can observe signal gradually from rough to precise. In this paper, the arc is generated by the discharge of two copper electrodes. Used the external air source to simulate the transverse arc blowing, arc waveform with the fuction of transverse air flow is observed. The signal of arc voltage and current is analyzed by the method of wavelet denoising, and the influence of air flow on arc is explored. It is of high guiding significance for the arc extinguishing technology of switchgear and arc detection method of electric equipment.
|
|
Received: 12 August 2019
Published: 20 March 2020
|
|
|
|
[1] 郭彤颖, 吴成东, 曲道奎. 小波变换理论应用进展[J]. 信息与控制, 2004, 33(1): 67-71.
[2] 刘冲, 李佳鸿. 基于小波变换与差值能量法相结合的串联故障电弧检测方法[J]. 电气技术, 2017, 18(12): 62-66.
[3] 张岚, 王献军, 赵卫华. 电力电缆故障定位在线检测研究[J]. 电气技术, 2018, 19(10): 55-58.
[4] 曾晓丹, 陈永往, 郭谋发, 等. 基于Adaboost的配电网单相接地故障选线[J]. 电气技术, 2018, 19(3): 70-75.
[5] 张希鹏, 邰能灵, 郑晓冬, 等. 基于WEMTR的柔性直流输电线路故障测距[J]. 电工技术学报, 2019, 34(3): 589-598.
[6] 王兆天. 小波变换在生物医学信号处理中的应用[J]. 临床医药文献杂志(电子版), 2016(50): 10059.
[7] 崔芮华, 王洋, 王传宇, 等. 基于多信息融合的航空线路串联故障电弧识别方法[J]. 电工技术学报, 2019, 34(增刊1): 118-125.
[8] 马成. 基于燃弧检测装置的弓网受流质量试验分析[D]. 成都: 西南交通大学, 2013.
[9] 许燕玲, 钟继勇, 陈华斌, 等. 基于小波的电弧电压信号去噪处理研究[C]//第十六次全国焊接学术会议论文集, 2011.
[10] 马国兵, 肖培如. 基于小波的图像去噪研究综述[J]. 工业控制计算机, 2013, 26(5): 91-92, 95.
[11] Bosnic J A, Petrovic G, Putnik A, et al.Power quality disturbance classification based on wavelet transform and support vector machine[C]//2017 11th Inter- national Conference on Measurement, 2017: 9-13.
[12] 王维博, 董蕊莹, 曾文入, 等. 基于改进阈值和阈值函数的电能质量小波去噪方法[J]. 电工技术学报, 2019, 34(2): 409-418. |
|
|
|
2020, Vol. 21 
