基于小波与排列熵奇异性检测的行波故障测距分析

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1、Abstractandthesinusoidalnoisesignalastheobject,toverifythevalidityofthesignaldetectedbypermutationentropy.Thencombinedwithcomprehensivede-noisingmethod,thesingularityoftravelingwavesignalisdetected.Finally,theresultswillbecomparedwiththewavelettransformmodulusmaximamethodandthemorp

2、hologicalgradienttransformmethod,toverifythefeasibilityofpermutationentropyappliedforthefaultlocationoftransmissionline.KeyWords:transmissionline,travelingwavefaultlocation,mathematicalmorphology,wavelettransform,permutation,entropy.II目录目录第一章绪论......................................

3、.......................................................................................11.1课题研究的背景和意义.............................................................................................11.2电力系统现代行波故障测距方法概述....................................................................

4、.11.2.1单端测距法.......................................................................................................11.2.2双端测距法.......................................................................................................21.2.3三端测距法..........................................

5、.............................................................31.2.4基于网络的广域测距法...................................................................................41.3行波测距法中关键技术的介绍.................................................................................41.3.1行波信号的获取...........

6、....................................................................................41.3.2行波波速的确定...............................................................................................51.3.3消除波速影响的故障测距算法.......................................................................

7、51.4论文所做的主要工作.................................................................................................6第二章行波特性分析及其行波分析工具...............................................................................82.1电力线路的暂态行波过程............................................................

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