本文選題：廣域后備保護(hù) + 站間通信距離�。� 參考：《電工技術(shù)學(xué)報(bào)》2014年04期

【摘要】：廣域后備保護(hù)具有整定配合簡(jiǎn)潔、不受電網(wǎng)潮流轉(zhuǎn)移影響等優(yōu)點(diǎn),可有效防止由傳統(tǒng)保護(hù)隱性故障引發(fā)的電網(wǎng)連鎖跳閘事故。但如何在實(shí)際大規(guī)模電網(wǎng)中劃分合理的保護(hù)區(qū)域是其面臨的難題。本文針對(duì)集中決策式廣域后備保護(hù)提出了相應(yīng)的分區(qū)評(píng)價(jià)指標(biāo)。以電網(wǎng)的分區(qū)最長(zhǎng)通信距離評(píng)價(jià)廣域通信的實(shí)時(shí)性,并結(jié)合分區(qū)經(jīng)濟(jì)性和均衡性指標(biāo)構(gòu)建了分區(qū)目標(biāo)函數(shù)。同時(shí),提出了一種基于二層搜索分區(qū)的優(yōu)化分區(qū)算法。該算法通過(guò)優(yōu)化分區(qū)搜索節(jié)點(diǎn)策略縮短了進(jìn)化種群中的染色體長(zhǎng)度,在自適應(yīng)優(yōu)化分區(qū)數(shù)目的同時(shí),大幅減小了分區(qū)算法的搜索空間。基于IEEE 39和118節(jié)點(diǎn)系統(tǒng)的仿真表明,所述分區(qū)算法在對(duì)不同規(guī)模電網(wǎng)進(jìn)行分區(qū)時(shí)均具有較高的運(yùn)算效率,并能較好地滿(mǎn)足分區(qū)評(píng)價(jià)指標(biāo)的要求。
[Abstract]:Wide area backup protection has the advantages of simple setting coordination and no influence of power flow transfer. It can effectively prevent cascading tripping accidents caused by hidden faults of traditional protection.But how to divide the reasonable protection area in the actual large-scale power grid is a difficult problem.In this paper, the corresponding zonal evaluation index for wide area backup protection based on centralized decision is proposed.The real time performance of wide area communication is evaluated by the longest communication distance in power system, and the partition objective function is constructed with the index of economy and equilibrium.At the same time, an optimized partition algorithm based on two-level search partition is proposed.The algorithm reduces the chromosome length in the evolutionary population by optimizing the strategy of partitioning search nodes and reduces the search space of the partitioning algorithm greatly while adaptively optimizing the number of partitions.The simulation results based on IEEE 39 and 118-bus system show that the proposed partition algorithm has high computational efficiency and can meet the requirements of the zoning evaluation index.
【作者單位】： 華中科技大學(xué)強(qiáng)電磁工程與新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金重點(diǎn)項(xiàng)目(50837002),國(guó)家自然科學(xué)基金面上項(xiàng)目(51177058、50877031) 高等學(xué)校博士學(xué)科點(diǎn)專(zhuān)項(xiàng)科研基金(20090142110055)資助項(xiàng)目
【分類(lèi)號(hào)】：TM774

【參考文獻(xiàn)】

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