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.
标签: method reconstruction location proposed
上传时间: 2016-02-04
上传用户:maizezhen
Traffic sign shape classification based on Support Vector Machines and the FFT of the signature of blobs.pdf
标签: classification the signature Machines
上传时间: 2013-12-14
上传用户:rishian
可以进行曲线回归拟合算法的四参数算法。函数为 y = (a-d)/(1+(x/c)^b) +d . ec50.m 为其主要函数
上传时间: 2016-02-04
上传用户:我干你啊
用Jacobi叠待法解线性方程组 function Jacobi(A,b,n,x0,e,N)
上传时间: 2016-02-04
上传用户:coeus
b样条算法 b样条算法 b样条算法
标签: 算法
上传时间: 2013-12-05
上传用户:sssl
二分法求一个未知数方程的根f(x)=0,x属于[a,b],除了显示每次计算的小区间外,还根据给定的精度计算了所需的次数k
上传时间: 2016-02-05
上传用户:fredguo
本程序是完成一个函数计算器的功能,通过输入表达式,然输入表达的未知数,则可以计算出表达式的值来:如:a+b+c+sin(a+b),分别输入a ,b ,c 的值,就可以计算表达式的值
上传时间: 2016-02-05
上传用户:xcy122677
聊天室用WINSOCKET来做的聊天室实现B/S的聊天获取IP地址
上传时间: 2016-02-06
上传用户:gundan
% SSOR预处理的共轭梯度法求解方程Ax=b % 输入参数说明 % A 正定矩阵[n*n] % b 右边向量 % omega SSOR预处理参数(0--2) % Times 迭代次数 % errtol 给定误差终止条件 % %输出参数 % NewX 方程Ax=b的x近似解 % avgerr 求解的当前平均绝对误差
上传时间: 2013-12-19
上传用户:一诺88
学生学籍管理系统(B/S)的设计与开发主要实现以下功能1.学生基本信息的管理; 2、学生增减; 3、课程管理:课程的增加、修改、删除、查询等; 4、基础数据管理.
上传时间: 2013-12-23
上传用户:二驱蚊器