本文選題：行波保護(hù) + 行波信號(hào)�。� 參考：《長(zhǎng)沙理工大學(xué)》2014年碩士論文

【摘要】：隨著電力系統(tǒng)的快速發(fā)展與電網(wǎng)規(guī)模的日益擴(kuò)大,人們對(duì)電網(wǎng)發(fā)生故障后對(duì)故障點(diǎn)進(jìn)行快速準(zhǔn)確地查找與排除,以及對(duì)電網(wǎng)安全穩(wěn)定運(yùn)行的呼聲日漸高漲。如何對(duì)電網(wǎng)中的故障點(diǎn)進(jìn)行快速而精準(zhǔn)的定位已經(jīng)逐漸成為電力系統(tǒng)建設(shè)與發(fā)展所面臨的一個(gè)重要課題。近年來(lái),由于信號(hào)采集技術(shù)、高精度授時(shí)技術(shù)、智能數(shù)學(xué)分析技術(shù)等一系列科學(xué)技術(shù)的發(fā)展,極大了促進(jìn)了電網(wǎng)行波保護(hù)技術(shù)的研究,其中對(duì)電網(wǎng)中的輸電線路實(shí)現(xiàn)故障行波距離保護(hù)是確保電網(wǎng)安全穩(wěn)定運(yùn)行的重要技術(shù)。論文對(duì)國(guó)內(nèi)外現(xiàn)有的行波保護(hù)技術(shù)與方法進(jìn)行了全面的分析與總結(jié),在此基礎(chǔ)上提出了一種基于廣域行波信息的新型行波保護(hù)方法,同時(shí)還提出了一種電網(wǎng)故障行波檢測(cè)裝置的優(yōu)化配置方法。論文首先分析了行波保護(hù)的研究現(xiàn)狀,詳細(xì)闡述了行波保護(hù)的原理以及行波保護(hù)技術(shù)存在的主要問(wèn)題,并對(duì)各種保護(hù)的優(yōu)缺點(diǎn)進(jìn)行了仔細(xì)的歸納與總結(jié),之后對(duì)故障行波信號(hào)在電網(wǎng)中的傳播,以及故障行波信號(hào)的檢測(cè)及提取進(jìn)行了探討與分析,得出電網(wǎng)中的某條輸電線路發(fā)生故障時(shí),線路中會(huì)產(chǎn)生一個(gè)高頻暫態(tài)行波信號(hào),該信號(hào)可以真實(shí)反映故障信號(hào)的特征,因此可以通過(guò)檢測(cè)暫態(tài)行波信號(hào)所蘊(yùn)含的信息來(lái)進(jìn)行故障行波保護(hù)。綜合上述分析與研究,論文提出了一種基于廣域行波信息的新型行波保護(hù)方法,根據(jù)電壓行波信號(hào)與電流行波信號(hào)的極性來(lái)對(duì)故障線路進(jìn)行有效的判斷與甄選。此外,還提出了一種電網(wǎng)故障行波檢測(cè)裝置的優(yōu)化配置方法,在確保電網(wǎng)中所有線路的故障行波信號(hào)能被檢測(cè)的基礎(chǔ)上使得配置的行波檢測(cè)裝置數(shù)目最小,從而提高電網(wǎng)故障行波定位系統(tǒng)的經(jīng)濟(jì)性與可靠性,最后,利用ATP-EMTP仿真軟件對(duì)電網(wǎng)進(jìn)行了仿真分析驗(yàn)證了保護(hù)方法與配置方法的可行性。論文提出了一種基于廠廣域行波信息的新型行波保護(hù)方法,同時(shí)還提出了一種電網(wǎng)故障行波檢測(cè)裝置的優(yōu)化配置方法。這兩種新方法對(duì)于行波網(wǎng)絡(luò)保護(hù)技術(shù)與系統(tǒng)的發(fā)展起到了積極的推動(dòng)作用,為行波保護(hù)技術(shù)與故障行波檢測(cè)裝置配置的推廣與應(yīng)用奠定了堅(jiān)實(shí)的基礎(chǔ)。
[Abstract]:With the rapid development of the power system and the increasing expansion of the scale of the power network, the voice of people to find and eliminate the fault points quickly and accurately after the fault occurred in the power network, as well as to the safe and stable operation of the power network is rising day by day. How to locate fault points quickly and accurately has gradually become an important issue in the construction and development of power system. In recent years, due to the development of a series of science and technology, such as signal acquisition technology, high precision timing technology, intelligent mathematical analysis technology and so on, the research of traveling wave protection technology in power grid has been greatly promoted. The fault traveling wave distance protection for transmission lines is an important technology to ensure the safe and stable operation of power network. Based on the analysis and summary of the existing traveling wave protection techniques and methods at home and abroad, a new traveling wave protection method based on wide-area traveling wave information is proposed in this paper. At the same time, an optimal configuration method of fault traveling wave detection device in power network is proposed. Firstly, this paper analyzes the research status of traveling wave protection, expounds the principle of traveling wave protection and the main problems existing in traveling wave protection technology, and sums up the advantages and disadvantages of various kinds of protection carefully. After that, the propagation of the fault traveling wave signal in the power network and the detection and extraction of the fault traveling wave signal are discussed and analyzed. It is concluded that a high frequency transient traveling wave signal will be produced in the transmission line when the fault occurs in a transmission line in the power network. The signal can truly reflect the characteristics of the fault signal, so the fault traveling wave protection can be carried out by detecting the information contained in the transient traveling wave signal. Based on the above analysis and research, a new traveling wave protection method based on wide-area traveling wave information is proposed. The fault line can be effectively judged and selected according to the polarity of voltage traveling wave signal and current traveling wave signal. In addition, an optimal configuration method of fault traveling wave detection device in power network is proposed. On the basis of ensuring that the fault traveling wave signal of all lines in the power network can be detected, the number of configured traveling wave detection devices is minimized. In order to improve the economy and reliability of the fault traveling wave location system, finally, the feasibility of the protection method and the configuration method is verified by the simulation analysis of the power network using ATP-EMTP simulation software. In this paper, a new traveling wave protection method based on plant wide area traveling wave information is proposed. At the same time, an optimal configuration method of power network fault traveling wave detection device is also proposed. These two new methods play a positive role in the development of traveling wave network protection technology and system, and lay a solid foundation for the popularization and application of traveling wave protection technology and fault traveling wave detection device configuration.
【學(xué)位授予單位】：長(zhǎng)沙理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM773

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本文編號(hào)：1965866