發(fā)布時(shí)間：2018-01-07 02:02

  本文關(guān)鍵詞：基于功率介數(shù)的電網(wǎng)關(guān)鍵環(huán)節(jié)辨識(shí)　出處：《電網(wǎng)技術(shù)》2014年07期 　論文類型：期刊論文

  更多相關(guān)文章： 潮流追蹤 功率介數(shù) 關(guān)鍵環(huán)節(jié) 靜態(tài)攻擊 穩(wěn)定性校驗(yàn)

【摘要】：綜合功率輸送關(guān)系、電網(wǎng)拓?fù)浣Y(jié)構(gòu)和系統(tǒng)運(yùn)行狀態(tài),提出了功率介數(shù)的概念。根據(jù)網(wǎng)絡(luò)連通性及功率輸送分配關(guān)系,分別定義了線路功率介數(shù)和節(jié)點(diǎn)功率介數(shù)。通過關(guān)鍵線路斷線或過負(fù)荷的連鎖攻擊進(jìn)行有效性校驗(yàn)。以IEEE 39節(jié)點(diǎn)系統(tǒng)作為測(cè)試算例,計(jì)算線路的功率介數(shù)和節(jié)點(diǎn)功率介數(shù)并進(jìn)行排序,按照排序結(jié)果對(duì)這些元件進(jìn)行攻擊,驗(yàn)證了這些高功率介數(shù)元件確為網(wǎng)絡(luò)中的脆弱環(huán)節(jié)。分別以網(wǎng)絡(luò)效能函數(shù)和潮流熵進(jìn)行靜態(tài)攻擊穩(wěn)定性校驗(yàn),校驗(yàn)結(jié)果表明電氣元件的功率介數(shù)越高對(duì)電網(wǎng)運(yùn)行的影響就越大。
[Abstract]:In this paper, the concept of power medium is put forward according to the connection of network and the distribution relation of power transmission by synthesizing the power transmission relation, the topology structure and the operation state of the power system. The line power and node power are defined respectively. The validity is verified by critical line break or chain attack of overload. The IEEE 39 bus system is taken as a test example. The power mediums and node power mediums of the lines are calculated and sorted, and these elements are attacked according to the sorting results. It is verified that these high power intermediate elements are the weak link in the network. The static attack stability is checked by the network efficiency function and the power flow entropy respectively. The results show that the higher the power medium of electrical components, the greater the influence on power grid operation.
【作者單位】： 華北電力大學(xué)電氣與電子工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51077052) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(13MS108)~~
【分類號(hào)】：TM711
【正文快照】： 0引言近年來,世界范圍內(nèi)的大停電事故頻繁發(fā)生[1-3]。大停電事故往往是由個(gè)別電網(wǎng)元件故障或者部分節(jié)點(diǎn)過負(fù)荷導(dǎo)致的。而大停電事故的擴(kuò)大又與電網(wǎng)的關(guān)鍵環(huán)節(jié)具有緊密的聯(lián)系。這些關(guān)鍵環(huán)節(jié)主要包括:在系統(tǒng)穩(wěn)定中扮演重要角色的脆弱性線路和節(jié)點(diǎn),它們的退出將導(dǎo)致網(wǎng)絡(luò)元件故障

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相關(guān)期刊論文 前10條

1 丁劍;白曉民;趙偉;李再華;周子冠;許婧;李曉s，

本文編號(hào)：1390487