發(fā)布時間：2018-06-23 05:15

  本文選題：微電網(wǎng) + 平滑切換　； 參考：《電網(wǎng)技術(shù)》2017年12期

【摘要】：實現(xiàn)微電網(wǎng)并網(wǎng)/孤島運(yùn)行模式平滑切換是保證微電網(wǎng)安全可靠運(yùn)行的前提。提出了基于線性自抗擾控制(linear active disturbance rejection control,LADRC)技術(shù)的微電網(wǎng)運(yùn)行模式平滑切換控制策略。以主從結(jié)構(gòu)的微電網(wǎng)為研究對象,將主控單元電壓外環(huán)控制器設(shè)計為LADRC控制器,采用擴(kuò)張狀態(tài)觀測器(extended state observer,ESO)對擴(kuò)張狀態(tài)(未知過程擾動、系統(tǒng)未建模攝動及dq軸通道耦合)進(jìn)行在線實時估計,并將擾動估計主動補(bǔ)償于主控單元的電流內(nèi)環(huán)設(shè)定值中,從而達(dá)到快速消除擾動、平緩切換過程的效果。推導(dǎo)出一階LADRC及主控系統(tǒng)的傳遞函數(shù)并進(jìn)行幅頻分析,結(jié)果表明所提方案具有良好的設(shè)定值跟蹤性能和擾動抑制性能。動態(tài)仿真結(jié)果表明,所提控制策略能夠有效平滑微網(wǎng)由并網(wǎng)切換至孤網(wǎng)模式產(chǎn)生的暫態(tài)振蕩,同時對從控部分的擾動具有較好的魯棒性,并且算法簡單、調(diào)試容易。
[Abstract]:It is a prerequisite for the safe and reliable operation of microgrid to realize smooth switching of grid / island operation mode. A smooth switching control strategy based on linear active disturbance rejection control (linear active disturbance rejection control LADRC) for microgrid operation mode is proposed. Taking the microgrid with master-slave structure as the research object, the main control unit voltage outer loop controller is designed as the LADRC controller, and the extended state observer (extended state observer is used to disturb the extended state (unknown process). The system is unmodeled perturbation and dq-axis coupling) and on-line real-time estimation is carried out, and the disturbance estimation is actively compensated to the set value of the current inner loop of the main control unit, so that the disturbance can be eliminated quickly and the switching process can be smoothed. The transfer function of the first order LADRC and the main control system is derived and the amplitude-frequency analysis is carried out. The results show that the proposed scheme has good performance of setting value tracking and disturbance suppression. The dynamic simulation results show that the proposed control strategy can effectively smooth the transient oscillation of the microgrid switching from grid-connected mode to the isolated mode, and it is robust to the disturbance of the slave control part, and the algorithm is simple and the debugging is easy.
【作者單位】： 國網(wǎng)江蘇省電力公司電力科學(xué)研究院;東南大學(xué)電氣工程學(xué)院;
【基金】：國家自然科學(xué)基金(51477029) 國家重點(diǎn)研發(fā)計劃項目(2016YFB0900400)~~
【分類號】：TM727

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 魯宗相;王彩霞;閔勇;周雙喜;呂金祥;王云波;;微電網(wǎng)研究綜述[J];電力系統(tǒng)自動化;2007年19期

2 鄭漳華;艾芊;;微電網(wǎng)的研究現(xiàn)狀及在我國的應(yīng)用前景[J];電網(wǎng)技術(shù);2008年16期

3 麻敏;韓繼明;麻秀慧;陳衍妍;;淺談微電網(wǎng)[J];科技資訊;2009年15期

4 樓書氫;李青鋒;許化強(qiáng);劉魯?shù)?;國外微電網(wǎng)的研究概況及其在我國的應(yīng)用前景[J];華中電力;2009年03期

5 楊為;丁明;畢銳;高研;丁銀;;微電網(wǎng)實驗平臺的設(shè)計[J];合肥工業(yè)大學(xué)學(xué)報(自然科學(xué)版);2010年01期

6 袁清芳;周作春;陳艷霞;李香龍;陳國鋒;;微電網(wǎng)發(fā)展應(yīng)對策略[J];農(nóng)村電氣化;2010年10期

7 安智敏;羅時光;;微電網(wǎng)的概念及發(fā)展[J];內(nèi)蒙古石油化工;2011年21期

8 王t，

本文編號：2055943