【摘要】：如何尋找一套快速,有效的配電網(wǎng)故障選線與定位的方案,已經(jīng)成為電力系統(tǒng)建設(shè)與發(fā)展所面臨的一個(gè)重要課題。由于配電網(wǎng)多為小電流接地系統(tǒng),故障特征量不明顯,且網(wǎng)絡(luò)結(jié)構(gòu)復(fù)雜,使得很多針對配電網(wǎng)的故障選線與定位的方法在應(yīng)用中,均得不到理想的效果。為此,論文研究了基于行波論文的配電網(wǎng)故障定位的方法,有望解決配電網(wǎng)多分支線路故障定位的難題。論文首先對國內(nèi)外的研究現(xiàn)狀進(jìn)行了概述,比較了現(xiàn)有配電網(wǎng)故障選線與定位方法的優(yōu)缺點(diǎn)；在研究了故障行波在配電網(wǎng)上的傳輸特性的基礎(chǔ)上,分析了混合線路、多分支線路及配電變壓器對行波傳輸?shù)挠绊�；分析了配電網(wǎng)的拓?fù)渚W(wǎng)絡(luò)結(jié)構(gòu),以經(jīng)濟(jì)性與可觀性為目標(biāo)約束條件,提出了啟發(fā)式搜索法與模擬退火算法相結(jié)合的配電網(wǎng)行波檢測裝置的優(yōu)化配置方案；在前期研究的基礎(chǔ)上,研究了配電網(wǎng)故障選線的方法。借助D型行波測距算法,刻畫了故障距離與故障分支之間的相關(guān)性,構(gòu)建了配電網(wǎng)故障選線的判據(jù)模型,通過融合多組D型行波測距系統(tǒng)的故障選線結(jié)果,最終確定故障線路；在故障選線的基礎(chǔ)上,對于傳統(tǒng)的單端定位法在配電網(wǎng)故障定位中的局限性進(jìn)行了研究,通過對比初始故障行波與第一分支節(jié)點(diǎn)的反射行波在線路中的傳輸特性,提出了利用第一反射行波計(jì)算故障距離的新型單端故障定位算法。論文搭利用ATP仿真軟件搭建了配電網(wǎng)仿真模型,對該文中所提出的行波檢測裝置的優(yōu)化配置方案及故障選線與定位方案進(jìn)行了仿真分析。理論分析及仿真結(jié)果可知：論文所提出裝置優(yōu)化配置方案能夠有效的實(shí)現(xiàn)配電網(wǎng)的行波檢測裝置的優(yōu)化配置,減少了應(yīng)用成本；同時(shí),論文所提出的基于行波理論的故障定位方法能快速、準(zhǔn)確的選出故障線路,精確故障位置且不存在偽故障點(diǎn)問題,有利于行波法在配電網(wǎng)故障定位研究中的推廣
[Abstract]:How to find a fast and effective scheme of fault line selection and location in distribution network has become an important subject in the construction and development of power system. Because the distribution network is mostly small current grounding system, the fault characteristic quantity is not obvious, and the network structure is complex, many methods of fault line selection and location for distribution network can not get the ideal effect in application. Therefore, this paper studies the method of distribution network fault location based on traveling wave paper, which is expected to solve the problem of multi-branch line fault location in distribution network. Firstly, this paper summarizes the current research situation at home and abroad, compares the advantages and disadvantages of existing fault line selection and location methods, analyzes the transmission characteristics of fault traveling wave on distribution network, and analyzes the hybrid line. The influence of multi-branch lines and distribution transformers on traveling wave transmission is analyzed. An optimal configuration scheme of traveling wave detection device in distribution network combining heuristic search method and simulated annealing algorithm is proposed, and the method of fault line selection in distribution network is studied on the basis of previous research. Based on the D-type traveling wave location algorithm, the correlation between fault distance and fault branch is described, and the criterion model of fault line selection in distribution network is constructed. Finally, fault line is determined by merging the fault line selection results of multi-group D-type traveling wave location system. On the basis of fault line selection, the limitation of the traditional single terminal localization method in fault location of distribution network is studied. The transmission characteristics of the initial fault traveling wave and the reflected traveling wave of the first branch node in the transmission line are compared. A novel single-terminal fault location algorithm using the first reflection traveling wave to calculate the fault distance is proposed. In this paper, the simulation model of distribution network is built by using ATP simulation software, and the optimal configuration scheme, fault line selection and location scheme of traveling wave detection device proposed in this paper are simulated and analyzed. Theoretical analysis and simulation results show that the proposed optimal configuration scheme of the device can effectively achieve the optimal configuration of traveling wave detection device in distribution network, and reduce the cost of application, at the same time, The method of fault location based on traveling wave theory proposed in this paper can select fault lines quickly and accurately, and there is no pseudo-fault point problem, which is beneficial to the popularization of traveling wave method in fault location research of distribution network.
【學(xué)位授予單位】：長沙理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM75

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相關(guān)期刊論文 前1條

1 李澤文;曾祥君;徐曉菁;雷莉;張小麗;;輸電線路雙端行波故障定位新算法[J];電力系統(tǒng)自動(dòng)化;2006年15期

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本文編號：2285877