本文關(guān)鍵詞： 寧夏電網(wǎng) 復(fù)雜網(wǎng)絡(luò) 脆弱性　出處：《寧夏大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著全球經(jīng)濟(jì)的不斷發(fā)展,大規(guī)�？鐓^(qū)域電網(wǎng)互聯(lián)使得電力系統(tǒng)變得越來(lái)越復(fù)雜,這提高電力系統(tǒng)運(yùn)行效率的同時(shí)也增加了其復(fù)雜性。近年來(lái),很多地區(qū)和國(guó)家發(fā)生的大規(guī)模停電表明,局部的小故障會(huì)迅速傳播,造成一系列停電事故,甚至?xí)䦟?dǎo)致電力系統(tǒng)的癱瘓。應(yīng)用復(fù)雜網(wǎng)絡(luò)理論的全局分析法研究電力系統(tǒng)產(chǎn)生連鎖故障的原因,揭示故障傳播的內(nèi)在機(jī)理將變得十分有必要。本文應(yīng)用復(fù)雜網(wǎng)絡(luò)理論建立寧夏地區(qū)電網(wǎng)的網(wǎng)絡(luò)模型,應(yīng)用Pajek軟件計(jì)算網(wǎng)絡(luò)特征參數(shù)：節(jié)點(diǎn)度數(shù)、度分布、最短路徑長(zhǎng)度、聚類系數(shù)、節(jié)點(diǎn)及邊的介數(shù)等；利用度分布、最短路徑長(zhǎng)度和聚類系數(shù)判定寧夏電網(wǎng)所屬的網(wǎng)絡(luò)類型；構(gòu)建電網(wǎng)故障策略,隨機(jī)移除點(diǎn)／邊、有目地移除點(diǎn)／邊的方法,對(duì)比電網(wǎng)遭受不同攻擊后特征參數(shù)與兩個(gè)故障指標(biāo)的變化,分析寧夏電網(wǎng)遭受不同攻擊方式下的脆弱性；對(duì)IEEE118節(jié)點(diǎn)標(biāo)準(zhǔn)測(cè)試系統(tǒng)進(jìn)行相同的故障模擬,將結(jié)果與寧夏電網(wǎng)相比較,分析兩種電網(wǎng)的差異。針對(duì)無(wú)向、無(wú)權(quán)復(fù)雜電網(wǎng)模型的不足,以電網(wǎng)線路的電抗值作為權(quán)重,建立更加符合電網(wǎng)特性的加權(quán)網(wǎng)絡(luò)模型,計(jì)算加權(quán)后電網(wǎng)的最短路徑長(zhǎng)度和各節(jié)點(diǎn)與邊的介數(shù),并作為動(dòng)態(tài)脆弱性判定依據(jù),確定寧夏電網(wǎng)中的重要節(jié)點(diǎn)及線路。
[Abstract]:With the continuous development of the global economy, large-scale cross-regional power grid interconnection makes the power system become more and more complex, which improves the efficiency of power system operation, but also increases its complexity in recent years. Large-scale power outages in many regions and countries show that small local failures can spread rapidly, resulting in a series of blackouts. The global analysis method of complex network theory is used to study the causes of cascading faults in power system. It is necessary to reveal the inherent mechanism of fault propagation. In this paper, the complex network theory is applied to establish the network model of Ningxia power network, and the network characteristic parameter: node degree is calculated by using Pajek software. Degree distribution, shortest path length, clustering coefficient, number of nodes and edges, etc. Using degree distribution, shortest path length and clustering coefficient to determine the network type of Ningxia power network; The power network fault strategy is constructed, the point / edge is removed randomly, and the point / edge is removed. The change of characteristic parameters and two fault indexes after different attacks are compared. The vulnerability of Ningxia power grid under different attack modes is analyzed. The IEEE118 node standard test system is simulated with the same fault, the results are compared with Ningxia power grid, and the differences between the two kinds of power grid are analyzed. Taking the reactance value of power line as the weight, the weighted network model is established, and the shortest path length and the number of nodes and edges of the weighted network are calculated, which can be used as the basis for determining the dynamic vulnerability. Determine the important nodes and lines in Ningxia power grid.
【學(xué)位授予單位】：寧夏大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TM732

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