【正文】 of the overall power system, but also save much manpower and material of linetracking. Therefore, it is of great social and economic benefits.At present, fault location device of transmission line mostly use traveling wave location method, including twoterminal and oneterminal fault location method. As for traveling wave signal acquisition, voltage and current transformer that already in substation are mostly used. But traditional transformer has some drawbacks, such as much narrower frequency range, easy to saturate, poor high frequency response, ect. Therefore, it’s not easy to detect the transient traveling wave, hence, affects the location precision. In first two chapters, the monly used method and develop situation of transmission line fault location is prehensive analyzed and summarized, and then pare the advantages and disadvantages of various location methods and their applications. Based on traditional traveling wave location method, this paper poses a distributed traditional raveling wave location method. The third and fourth chapter mainly introduced the hardware design of fault location device, particularly about the fault current data acquisition unit, which including current sampling channel of Rogowski coil based on no hysteresis, high linear degree and good transient response, highspeed data acquisition and storage unit, transient traveling wave sampling trigger unit.In the fifth chapter, software design of fault location device is prehensively researched. The wavelet transform theory，espceially the singularitydetected theory is diseussed in this chapter. As for the detection of singularity and traveling wave head, the modulus maxima line is used.In the last chapter, a series of experiments is made to analysis the existing problems under real working condition, and then some solving measures are proposed. Finally, research results of this paper are summarized and based on present research some improvement is put forward.Keywords: Traveling Wave, Ditributed Fault Location , Rogowski Coin, Wavelet Transform，ModulusMaximumLine 用于輸電線路故障定位的導(dǎo)線監(jiān)測裝置的研制目 錄摘 要 ..............................................................................................................................................IIABSTRACT........................................................................................................................................III目 錄 ..............................................................................................................................................IV第一章 緒論 ....................................................................................................................................1 輸電線路故障定位研究的意義 ..............................................................................................1 故障定位方法研究的發(fā)展 ......................................................................................................1 國內(nèi)外故障測距研究現(xiàn)狀和主要方法 ..................................................................................2 阻抗法 .............................................................................................................................2 行波法 .............................................................................................................................3 行波定位存在的問題 .....................................................................................................5 本論文研究的主要工作 ..........................................................................................................6第二章 分布式故障定位裝置的理論基礎(chǔ) .................................................................................8 行波的基本理論 ......................................................................................................................8 長距離輸電線路的波過程 .............................................................................................8 行波的反射與折射 .......................................................................................................11 行波的衰減與變形 .......................................................................................................13 分布式輸電線路故障定位原理 ............................................................................................14 故障暫態(tài)行波的產(chǎn)生 ...................................................................................................14 非金屬性接地故障電流行波特性 ................................................................................15 金屬性接地故障電流行波特性 ...................................................................................17 檢測點安裝位置的確定 ...............................................................................................18 測距方程的確定 ...........................................................................................................19 真?zhèn)喂收宵c識別 ...........................................................................................................20 分布式行波故障定位裝置的技術(shù)難點 ................................................................................21 行波信號的采樣與存儲 ...............................................................................................22 故障電流采集的觸發(fā) ...................................................................................................22 行波到達時間的獲取 ...................................................................................................22 本章小結(jié) ...............................................................................................................................23第三章 分布式行波故障定位系統(tǒng)的硬件設(shè)計 ..............................................................................24 硬件的整體結(jié)構(gòu) .........................................................................................................................24 供電部分設(shè)計 ...............................................................................................