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微電網(wǎng)的應(yīng)用現(xiàn)狀與發(fā)展趨勢(shì)的研究畢業(yè)設(shè)計(jì)(論文)(更新版)

  

【正文】 電網(wǎng)技術(shù)的研究與應(yīng)用中可清楚看出 , 微電網(wǎng)的形成與發(fā)展絕不是對(duì)傳統(tǒng)集中式、大規(guī)模電網(wǎng)的革命與挑戰(zhàn),而是代表著電力行業(yè)服務(wù)意識(shí)、能源利用意識(shí)、環(huán)保意識(shí)的一種提高與改變。 中國(guó)尚未提出明確的微電網(wǎng)概念 , 但微電網(wǎng)的特點(diǎn)適應(yīng)中國(guó)電力發(fā)展的需求與方向 , 在中國(guó)有著廣闊的發(fā)展前景 , 具體體現(xiàn)在: a 微電網(wǎng)是中國(guó)發(fā)展可再生能源的有效形式。日本已對(duì)中 國(guó)多個(gè)偏遠(yuǎn)地區(qū)和較發(fā)達(dá)市區(qū)利用新能源發(fā)展的潛力與效益進(jìn)行了分析 , 并已在中國(guó)新疆維吾爾自治區(qū)建設(shè)了微電網(wǎng)工程。 d 微電網(wǎng)與大電網(wǎng)間靈活的并列運(yùn)行方式可使微電網(wǎng)起到削峰填谷的作用,從而使整個(gè)電網(wǎng)的發(fā)電設(shè)備得以充分利用,實(shí)現(xiàn)經(jīng)濟(jì)運(yùn)行。 目前,已有 3類經(jīng)典的微電網(wǎng)控制方法: a 基于電力電子技術(shù)的“即插即用”與“對(duì)等”的控制思想 該方法根據(jù)微電網(wǎng)控制要求 , 靈活選擇與傳統(tǒng)發(fā) 電機(jī)相類似的下垂特性曲線進(jìn)行控制,將系統(tǒng)的不平衡功率動(dòng)態(tài)分配給各機(jī)組承擔(dān),具有簡(jiǎn)單、可靠、易于實(shí)現(xiàn)的特點(diǎn)。但目前多代理技術(shù)在微電網(wǎng)中的應(yīng)用多集中于協(xié)調(diào)市場(chǎng)交易、對(duì)能量進(jìn)行管理方面 , 還未深人到 對(duì)微電網(wǎng)中的頻率、電壓等進(jìn)行控制的層面。該方法以超過一定闌值的零序電流分量和負(fù)序電流分量作為主保護(hù)的啟動(dòng)值,將傳統(tǒng)的過電流保護(hù)與之結(jié)合可取得良好的效果。 微電網(wǎng)內(nèi)電能是充足的,但是出于供電安全性和靈活性方面的考慮,它需要聯(lián)接到局部電網(wǎng)或者甚至是鄰近的其它微電網(wǎng)。 所謂異步聯(lián)接是指微電網(wǎng)利用逆變器與其它電網(wǎng)相聯(lián)。 具體選擇哪種聯(lián)接方式在很大程度上由微電網(wǎng)的規(guī)模決定,當(dāng)然也要考慮調(diào)節(jié)微電網(wǎng)與電網(wǎng)之間能量交換的控制策略。 華北電力大學(xué)本科畢業(yè)設(shè)計(jì)(論文) 20 參 考 文 獻(xiàn) [1] 魯宗相,王彩霞,閡勇,周雙喜,呂金祥,王云波,微電網(wǎng)研究綜述,電力系統(tǒng)自動(dòng)化, 2020, 31( 19): 100106 [2] 梁有偉,胡志堅(jiān),陳允平,分 布式發(fā)電及其在電力系統(tǒng)中的應(yīng)用研究綜述 [J],電網(wǎng)技術(shù), 2020, 27( 12): 7175 [3] 盛鹍,孔力,齊智平,裴 瑋,吳漢,息鵬,新型電網(wǎng) — 微電網(wǎng)( Microgrid)研究綜述,繼電器, 2020, 35( 12): 7581 [4] 周笪,關(guān)于我國(guó)可再生能源發(fā)電的問題分析及對(duì)策研究 [J],電網(wǎng)技術(shù), 2020, 25( 7): 13 [5] Macken , Bollen , Belmans , of Voltage Dips Through Distributed Generation Systems[J], IEEE Transon Industry Applications, 2020,40( 6): 16861693 [6] 陳海焱,陳金富,段獻(xiàn)忠,含分布式電源的配電網(wǎng)潮流計(jì)算 [J],電力系統(tǒng)自化,2020, 30( 1): 3540 [7] Caire R, Retiere N, Martino S, et al. 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