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    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/59447

    Title: 基於圖形理論的電網脆弱性分析及抵禦連鎖性失效之安全策略
    Graph-based vulnerability analyses on power grid and associated protection strategies against cascading failures
    Authors: 易敬剛
    Yi, Ching Kang
    Contributors: 蕭又新
    Shiau, You Hsien
    Yi, Ching Kang
    Keywords: 電力網路
    power grid
    complex network
    cascading failure
    protection strategy
    Date: 2012
    Issue Date: 2013-09-02 16:56:43 (UTC+8)
    Abstract: 於歷史事件中我們知道電力網路中些許的傷害會導致大停電事件的發生,而電力網路的安全是學者們一直以來關心的議題,複雜網路發展至今,已有不少研究人員利用複雜網路的方法來分析電力網路,本論文即利用複雜網路的分析方法,分析台灣電力網路脆弱性,並提出一新穎的保護策略。
    文章中引用三種分析方法分析台灣電力網路的脆弱性,第一為根據網路效率(efficiency of complex network),第二為根據靜態負載的連鎖性失效(static load cascading failure),第三為根據動態負載的連鎖性失效(dynamic load cascading failure),三種脆弱性分析的方法得到結果的交集處,在文中被認為是電力網路中最具風險的變電站。根據靜態負載的連鎖性失效的結果,我們在不改變網路結構和整體網路的負載量之下,提出一新穎的安全策略,試圖降低靜態負載時連鎖性失效帶來的傷害,並分析此安全策應用至ER隨機網路(ER random network)、BA無尺度網路(BA scale-free network)和台灣電力網路,且量化其結果。
    From blackout events in history, we know the damage of a few substations or transmission lines can lead to a big blackout, and the robustness of power grids are always a great concern. Recently the topological analyses of power grid network have developed rapidly and its achievements have become a center of attention. This thesis aims to investigate the vulnerability of Taiwan’s power grid through topological analyses and propose a novel protection strategy.
    This thesis introduces three methods to investigate the vulnerability of Taiwan’s power grid. The first method is based on efficiency of complex network. The second method is based on static load cascading failure. The third method is based on dynamic load cascading failure. The common results of the three results are considered the high risks in Taiwan’s power grid. According to the static load cascading failure, we propose a protection strategy against cascading failure without changing the structure of network and the whole load of the network, and then demonstrate the effectiveness of this strategy on an ER random network, a BA scale-free network and Taiwan’s power grid numerically.
    The three methods having the common results, one may say Taiwan’s power grid isn’t robust under the topological analyses, and our protection strategy may be useful for decreasing the damage after cascading failure.
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    Description: 碩士
    Source URI: http://thesis.lib.nccu.edu.tw/record/#G0100755006
    Data Type: thesis
    Appears in Collections:[應用物理研究所 ] 學位論文

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