材质对于非接触式行波传感器传变特性的影响
|
摘要
传感器的性能对准确高效地获取故障行波信号具有重要影响,为研究不同材质非接触式电压传感器的传变特性,首先对采集的信号用小波包能量谱法进行小波包分解,利用MATLAB软件拟合得到不同材质传感器采集信号的能量在相同频段的不同衰减规律,分析传感器传变特性;其次使用MATLAB工具编写入射波脉宽计算程序,根据脉宽值判断采集波形的明显程度以及原始信号幅值衰减速度判断信号采集的难易;最后从定位误差的角度分析定位的准确度;结果表明,镁材质金属片在行波测距中传变特性较好,可为传感器材质的选择及设计提供重要参考。
Sensor performance has an important impact on accurate and efficient acquisition of traveling wave fault signals,to study the transmission characteristics of non-contact voltage sensors of different materials,Firstly,wavelet packet decomposition is performed on the acquired signal by wavelet packet energy spectrum method,Using matlab software to fit the different attenuation laws of the energy collected by different material sensors in the same frequency band to analyze sensor transfer characteristics;Secondly, using the matlab tool to write the calculation program of the incoming wave pulse width, judging the obvious degree of the acquired waveform according to the pulse width value and the attenuation of the original signal amplitude to judge the difficulty of signal acquisition;Finally, the accuracy of the positioning is analyzed from the perspective of positioning error;In summary, the magnesium metal sheet has good transfer characteristics in traveling wave ranging. This can provide an important reference for the selection and design of sensor materials.
Sensor performance has an important impact on accurate and efficient acquisition of traveling wave fault signals,to study the transmission characteristics of non-contact voltage sensors of different materials,Firstly,wavelet packet decomposition is performed on the acquired signal by wavelet packet energy spectrum method,Using matlab software to fit the different attenuation laws of the energy collected by different material sensors in the same frequency band to analyze sensor transfer characteristics;Secondly, using the matlab tool to write the calculation program of the incoming wave pulse width, judging the obvious degree of the acquired waveform according to the pulse width value and the attenuation of the original signal amplitude to judge the difficulty of signal acquisition;Finally, the accuracy of the positioning is analyzed from the perspective of positioning error;In summary, the magnesium metal sheet has good transfer characteristics in traveling wave ranging. This can provide an important reference for the selection and design of sensor materials.
引文
[1] 董义华.基于电子式互感器的智能行波测距系统[D].济南:山东大学,2013.
[2] 毛艳,李庆峰,李毅,等.1 000 kV直流高压分压器的比对与不确定度评定[J].电网技术,2012,36(7):38-42.
[3] 董恒.基于一次电光效应的非接触式过电压监测传感器研究[D].重庆:重庆大学,2014.
[4] 何俊宏.基于非接触测量传感器的配电网在线监测和故障识别研究[D].重庆:重庆大学,2016.
[5] 姜林言,朱革,昌驰,等.时栅位移传感器行波产生新方法[J].仪器仪表学报,2015,36(Z):210-215.
[6] 简讯.基于电场感应的非接触式行波传感技术的研究[D].抚州:东华理工大学,2016.
[7] 王绍部,舒乃秋,龚庆武,等.计及TA传变特性的输电线路行波故障定位研究[J].中国电机工程学报,2006(2):88-92.
[8] 刘亮,曾祥君,邓名高,等.基于线路归一和网络解耦的配网故障测距方法[J].仪器仪表学报,2018,39(1):243-249.
[9] SUN Q,WU J,LV H P,et al. Analysis of coupling characteristics of hybrid electric field in the 750 kV HVAC and ± 800 kV HVDC parallel transmission lines[C]. The 5th International Symposium on Electromagnetic Compatibility, 2017.
[10] ZHAO M S,ZHANG J H,YI C P.Time-frequency characteristics of blasting vibration signals measured in milliseconds[J].Mining Science and Technology(China),2011,3(21):349-352.
[11] LI Q, LI D. Structure damage identification under ambient excitation based on wavelet packet analysis[J]. Journal of Physics: Conference Series, 2017, 842:012023.
[12] 宁瑞峰,张世平.小波包分析在爆破震动信号能量衰减规律中的应用[J].爆破,2014,(1):1-4,37.
[13] XUE F LIN M, CAI P, et al. Frequency spectrum analysis on micro-seismic signal of rock bursts induced by dynamic disturbance[J]. International Journal of Mining Science and Technology, 2010, 20(5):682-685.
[14] 曾志明,凌志勇,袁宜真,等.应用于输电线路故障测距的行波波速仿真分析[J].湖南工业大学学报,2017,31(4):32-38.
[15] 黄雄,王志华,尹项根,等.高压输电线路行波测距的行波波速确定方法[J].电网技术,2004,28(19):34-37.
[2] 毛艳,李庆峰,李毅,等.1 000 kV直流高压分压器的比对与不确定度评定[J].电网技术,2012,36(7):38-42.
[3] 董恒.基于一次电光效应的非接触式过电压监测传感器研究[D].重庆:重庆大学,2014.
[4] 何俊宏.基于非接触测量传感器的配电网在线监测和故障识别研究[D].重庆:重庆大学,2016.
[5] 姜林言,朱革,昌驰,等.时栅位移传感器行波产生新方法[J].仪器仪表学报,2015,36(Z):210-215.
[6] 简讯.基于电场感应的非接触式行波传感技术的研究[D].抚州:东华理工大学,2016.
[7] 王绍部,舒乃秋,龚庆武,等.计及TA传变特性的输电线路行波故障定位研究[J].中国电机工程学报,2006(2):88-92.
[8] 刘亮,曾祥君,邓名高,等.基于线路归一和网络解耦的配网故障测距方法[J].仪器仪表学报,2018,39(1):243-249.
[9] SUN Q,WU J,LV H P,et al. Analysis of coupling characteristics of hybrid electric field in the 750 kV HVAC and ± 800 kV HVDC parallel transmission lines[C]. The 5th International Symposium on Electromagnetic Compatibility, 2017.
[10] ZHAO M S,ZHANG J H,YI C P.Time-frequency characteristics of blasting vibration signals measured in milliseconds[J].Mining Science and Technology(China),2011,3(21):349-352.
[11] LI Q, LI D. Structure damage identification under ambient excitation based on wavelet packet analysis[J]. Journal of Physics: Conference Series, 2017, 842:012023.
[12] 宁瑞峰,张世平.小波包分析在爆破震动信号能量衰减规律中的应用[J].爆破,2014,(1):1-4,37.
[13] XUE F LIN M, CAI P, et al. Frequency spectrum analysis on micro-seismic signal of rock bursts induced by dynamic disturbance[J]. International Journal of Mining Science and Technology, 2010, 20(5):682-685.
[14] 曾志明,凌志勇,袁宜真,等.应用于输电线路故障测距的行波波速仿真分析[J].湖南工业大学学报,2017,31(4):32-38.
[15] 黄雄,王志华,尹项根,等.高压输电线路行波测距的行波波速确定方法[J].电网技术,2004,28(19):34-37.