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1、Abstractandthesinusoidalnoisesignalastheobject,toverifythevalidityofthesignaldetectedbypermutationentropy.Thencombinedwithcomprehensivede-noisingmethod,thesingularityoftravelingwavesignalisdetected.Finally,theresultswillbecomparedwiththewavelettransformmodulusmaximamethodandthemorp
2、hologicalgradienttransformmethod,toverifythefeasibilityofpermutationentropyappliedforthefaultlocationoftransmissionline.KeyWords:transmissionline,travelingwavefaultlocation,mathematicalmorphology,wavelettransform,permutation,entropy.II目錄目錄第一章緒論......................................
3、.......................................................................................11.1課題研究的背景和意義.............................................................................................11.2電力系統(tǒng)現(xiàn)代行波故障測距方法概述....................................................................
4、.11.2.1單端測距法.......................................................................................................11.2.2雙端測距法.......................................................................................................21.2.3三端測距法..........................................
5、.............................................................31.2.4基于網(wǎng)絡的廣域測距法...................................................................................41.3行波測距法中關鍵技術的介紹.................................................................................41.3.1行波信號的獲取...........
6、....................................................................................41.3.2行波波速的確定...............................................................................................51.3.3消除波速影響的故障測距算法.......................................................................
7、51.4論文所做的主要工作.................................................................................................6第二章行波特性分析及其行波分析工具...............................................................................82.1電力線路的暫態(tài)行波過程............................................................
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