本文關(guān)鍵詞：大電網(wǎng)互聯(lián)格局下的解列斷面雙階段搜索方法　出處：《高電壓技術(shù)》2015年03期 　論文類型：期刊論文

  更多相關(guān)文章： 解列斷面搜索 電氣距離 K-Medoids算法 電力系統(tǒng) 改進(jìn)蟻群算法 化簡

【摘要】：針對大區(qū)互聯(lián)電網(wǎng)受擾失穩(wěn)后應(yīng)及時進(jìn)行解列的問題,提出了一種解列斷面雙階段搜索方法。首先,基于有功對相角的靈敏度計算各母線節(jié)點(diǎn)之間的電氣距離,利用K-medoids算法對互聯(lián)電網(wǎng)進(jìn)行預(yù)分區(qū),再將子區(qū)域進(jìn)行聚合,得到互聯(lián)電網(wǎng)的初始簡化結(jié)構(gòu)圖;然后,構(gòu)建主動解列斷面搜索的數(shù)學(xué)模型,設(shè)置有功不平衡功率最小的目標(biāo)函數(shù)及約束條件;最后,利用改進(jìn)的蟻群算法求解最優(yōu)解列斷面。結(jié)果表明所提出的雙階段解列斷面搜索方法在不丟失可行解的情況下可將IEEE 118節(jié)點(diǎn)算例和某實際大電網(wǎng)算例分別簡化為20節(jié)點(diǎn)與310節(jié)點(diǎn)的系統(tǒng),并在不平衡功率分別為1.01 MW和189.1 MW搜索到了解列斷面,總過程耗時分別為0.21 s與4.35 s,滿足了解列搜索過程所要求的快速性與有效性。
[Abstract]:In order to solve the problem that the disturbance and instability of the interconnected power network in large area should be carried out in time, a two-stage search method is proposed. Firstly, based on the sensitivity of the active power phase angle, the electrical distance between the busbar nodes is calculated. The K-medoids algorithm is used to prepartition the interconnected power grid, and then the sub-regions are aggregated to get the initial simplified structure diagram of the interconnected power network. Then, the mathematical model of active unlisting section search is constructed, and the objective function and constraint condition of minimum active power imbalance power are set up. Finally. The improved ant colony algorithm is used to solve the optimal discontinuous section. The results show that the proposed two-stage de-listing cross-section search method can solve the problem of IEEE without losing the feasible solution. The 118-bus example and the actual large grid example are simplified to 20-bus and 310-bus systems, respectively. At the unbalanced power of 1.01 MW and 189.1 MW, the total process time is 0.21 s and 4.35 s, respectively. Meet the speed and effectiveness required for understanding the column search process.
【作者單位】： 武漢大學(xué)電氣工程學(xué)院;
【基金】：博士后科學(xué)基金(2014M552080) 國家電網(wǎng)公司大電網(wǎng)重大專項資助項目課題(SGCC-MPLG029-2012)~~
【分類號】：TM744
【正文快照】： 0引言1國民經(jīng)濟(jì)的飛速發(fā)展極大促進(jìn)了電力事業(yè)的建設(shè),2015年“三華”(華北、華東、華中)特高壓電網(wǎng)將形成“三縱三橫一環(huán)網(wǎng)”的主網(wǎng)架結(jié)構(gòu)[1-2],“高電壓、遠(yuǎn)距離、大容量”大電網(wǎng)的形成已成為了一種必然[3-4]。特高壓互聯(lián)電網(wǎng)在充分展現(xiàn)其優(yōu)越性的同時,也增強(qiáng)了區(qū)域電網(wǎng)間的

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