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Description: A new cable fault location method based on
wavelet reconstruction is proposed. In this method the
difference between the currents of faulty phase and sound
phase under the high voltage pulse excitation is used as the
measured signal and is decomposed in multi-scale by wavelet
transform, then reconstructed in single scale. Comparing with
traditional fault location method by travelling wave, the
presented method will not be interfered by the reflected wave
from the branch joint of cables or from other positions where
the impedances are not matched and not be influenced by fault
types, otherwise, the reflected waves can be recognized even
the faulty position is near to the measuring terminal, at the
same time, the influence of the wave speed uncertainty can be
reduced. The correctness of the proposed method is proved by
simulation results.
Platform: |
Size: 76327 |
Author: 213 |
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Description: 此程序是关于小波变换用于故障信号分析和处理的程序，特别适合去噪和第一类间断点的检测，适合机械波研究者参考-this procedure is used on the wavelet transform fault signal analysis and processing procedures, particularly suitable for de-noising and continuity of the first category of detection, for the reference of researchers mechanical wave
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Size: 1577 |
Author: 任之颖 |
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Description: 此程序是关于小波变换用于故障信号分析和处理的程序，特别适合去噪和第一类间断点的检测，适合机械波研究者参考-this procedure is used on the wavelet transform fault signal analysis and processing procedures, particularly suitable for de-noising and continuity of the first category of detection, for the reference of researchers mechanical wave
Platform: |
Size: 1024 |
Author: 任之颖 |
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Description: A new cable fault location method based on
wavelet reconstruction is proposed. In this method the
difference between the currents of faulty phase and sound
phase under the high voltage pulse excitation is used as the
measured signal and is decomposed in multi-scale by wavelet
transform, then reconstructed in single scale. Comparing with
traditional fault location method by travelling wave, the
presented method will not be interfered by the reflected wave
from the branch joint of cables or from other positions where
the impedances are not matched and not be influenced by fault
types, otherwise, the reflected waves can be recognized even
the faulty position is near to the measuring terminal, at the
same time, the influence of the wave speed uncertainty can be
reduced. The correctness of the proposed method is proved by
simulation results.
Platform: |
Size: 75776 |
Author: 213 |
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Description: 基于行波的电力电缆故障测距方法，可实现电缆线路的精确故障测距，误差很小。-Based on the traveling wave of the power cable fault location method can achieve accurate cable line fault location, a small error.
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Size: 27648 |
Author: qinxiaoan |
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Description: 故障指示器；单相接地故障；电流互感器；全波整流有效值电路；单片机-Fault Indicator Single-phase Ground Fault Current Transformer RMS circuit full-wave rectifier SCM
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Size: 3072 |
Author: 王子 |
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Description: 本程序为零序电流小波变换求首波头极性及模值大小原理:故障线路的波头极性与非故障线路相反。-This procedure is zero sequence current first wave wavelet transform modulus of the first polarity and the size principle: the first wave of fault lines fault lines and non-polar opposite.
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Size: 4096 |
Author: wugang |
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Description: Fault analysis using full wave window fourier
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Size: 3072 |
Author: Sumith |
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Description: VC++写的故障录波查看分析软件 用VC++2003开发的，能分析公司所有的录波格式，能打开标准comtrade文本格式录波文件，能把打开的录波文件保存为comtrade格式-VC++ to write software fault recording view of development with VC++2003, the company can analyze all the recorded Pogue style, text format to open standard comtrade recorded wave file, can open the recorded wave file format for the comtrade
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Size: 84992 |
Author: 高希军 |
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Description: 本程序是用于在时域中分析处理轴承故障数据的，提取了各种时域的特征参数，包括均值，有效值，峭度，裕度指标，波形指标等等 适合初学者用于轴承的故障诊断中对参数的提取。（附上轴承故障数据3类共21组 正常、内圈、外圈）-This procedure is used in the time domain analysis of bearing fault data processing to extract the characteristics of various time domain parameters, including mean, RMS, kurtosis, margin indicators, wave indicators, and so suitable for beginners for bearings Fault diagnosis of parameter extraction.
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Size: 38912 |
Author: 荣誉 |
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Description: It can be applyed forthe Spectral Element Method conbined finite element and spectral method to solve the 2D wave equation.as a pecial case is SH. dynamic fault with slip weakening is considered either.
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Size: 12288 |
Author: kaustwa |
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Description: 校准模拟量通道 添加TCP/IP协议版 添加傅立叶变换板 添加启动录波 添加故障录波 SCADA通信
二次谐波分析 处理直流信号 PID调节模块 -Calibrate the analog channel to add TCP/IP protocol version of the Fourier transform plate add add add fault recorder starts recording wave analysis of second harmonic SCADA communications signal processing PID control module DC
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Size: 10960896 |
Author: 李俊 |
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Description: 利用相关性基波消去法诊断电机转子断条故障Using the correlation matrix of wave elimination method to diagnosis motor broken rotor bar fault-Using the correlation matrix of wave elimination method to diagnosis motor broken rotor bar fault
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Size: 421888 |
Author: |
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Description: 可读取采集卡上WMD格式数据文件，分析行波故障信号的故障点及波头位置。-Can read acquisition card format data files on WMD, analyzes the traveling wave fault signal fault point and wave head position.
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Size: 2048 |
Author: wuzhonglang |
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Description: 本程序是利用单端电气量依据行波原理实现故障测距的程序，需要较高的采样率以提高精度。-This procedure uses traveling wave principle of the single-terminal electrical information in accordance with the procedure of fault location, it requires a higher sampling rate in order to improve accuracy.
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Size: 1024 |
Author: zhaofeng |
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Description: 将高阶时频表示引入机械故障诊断领域。介绍了Wigner 高阶矩谱(WHOS)的概念、定义。针对多分量信号Wigner 高阶矩谱的交叉项会产生“虚假信号”,结合局域波法, 提出了一种抑制WHOS交叉项的新方法。首先对复杂信号进行预处理, 利用局域波分解方法把其分解成有限个具有单分量特性的基本模式分量,然后对每个基本模式分量计算WHOS。该方法能有效抑制WHOS时频分布的交叉项。通过仿真实验和转子的故障实验,以Wigner 双谱为例, 验证了该方法的实用性,为故障诊断的特征提取提供了新的工具-Higher order time-frequency representation introduced the field of mechanical fault diagnosis. Wigner higher order moment spectrum (WHOS) introduced the concept of definition. Wigner higher order moment spectrum of multi-component signal cross terms will produce " false signal" , combined with local wave method, a new method of an inhibitory the WHOS cross items. First of complex signal preprocessing, local wave decomposition method to decompose into a finite number of single component characteristics the basic mode component, and then for each mode component calculated WHOS. This method can effectively inhibit WHOS cross terms of the frequency distribution. Experiment by simulation and the fault of the rotor, Wigner bispectrum, for example, verify the usefulness of the method, provided a new tool for the fault diagnosis feature extraction
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Size: 362496 |
Author: 张力 |
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Description: 提取故障发生时正向行波和反向行波的示例程序,本程序计算的是0模分量,设定仿真模型在0.035s时发生故障,故障分量取为从故障后的0.035s~0.039s减去故障前的0.015s~0.019s-Forward traveling wave and reverse traveling wave sample program to extract a fault occurs, the program calculates the 0-mode component, set the simulation model in 0.035s failure, the fault component is taken as from the failure 0.035s ~ 0.039s less before the failure 0.015s ~ 0.019s
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Size: 1024 |
Author: 刘晓晨 |
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Description: PSCAD中搭建的输电线路行波故障测距仿真模型，并仿真实现。-Transmission Line Traveling Wave Fault Location in PSCAD build simulation models and simulation.
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Size: 10486784 |
Author: |
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Description: 小波变换实例，用于故障特征提取，时域频域分析等-Examples of wavelet transform for fault feature extraction, time domain frequency domain analysis
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Size: 1024 |
Author: 马文涛 |
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Description: A universal wavefront positioning correction method
on traveling-wave-based fault-location algorithms is proposed. According to the location accuracy analysis for the faults of which the
fault positions change successively, it is noted that the real fault
distance generally cannot be divided exactly by the distance corresponding to an integer sampling interval.
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Size: 329728 |
Author: seadamhd29
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