【摘要】：分布式發(fā)電(DG)具有污染少、能源利用率高、安裝地點(diǎn)靈活、輸配電資源和輸電線路損耗少等特有優(yōu)勢(shì),逐漸成為未來大型電網(wǎng)的有力補(bǔ)充和有效支撐,是未來電力系統(tǒng)的發(fā)展趨勢(shì)之一。然而,高滲透的分布式電源接入集中式大電網(wǎng)時(shí),會(huì)引起如穩(wěn)定性、控制和保護(hù)等方面的一系列新問題。本文背景主要來源于作者從事的延慶智能微電網(wǎng)建設(shè)工程項(xiàng)目,從工程項(xiàng)目的實(shí)施方案出發(fā),對(duì)延慶微電網(wǎng)項(xiàng)目的運(yùn)行控制技術(shù)進(jìn)行研究,并對(duì)延慶微電網(wǎng)項(xiàng)目的實(shí)施和應(yīng)用做具體的分析。(1).介紹了微電網(wǎng)現(xiàn)狀的基本控制策略,并重點(diǎn)分析了基于無互聯(lián)線的傳統(tǒng)下垂特性和在此基礎(chǔ)上得改進(jìn)算法、以及并聯(lián)逆變器的功率傳輸特性。(2).進(jìn)行了三相電壓型逆變器理論分析及自適應(yīng)阻尼策略的研究分析。逆變器是微電網(wǎng)系統(tǒng)的核心,本文重在建立三相電壓型逆變器在dq軸下的數(shù)學(xué)模型,然后介紹逆變器控制單元的自適應(yīng)阻尼策略設(shè)計(jì),仿真驗(yàn)證其可行性和有效性。(3).進(jìn)行了并聯(lián)逆變器小信號(hào)模型的分析。由于逆變器本身一些參數(shù)——輸出線路阻抗和負(fù)載阻抗,控制參數(shù)——下垂增益和功率檢測(cè)濾波常數(shù)等均對(duì)系統(tǒng)穩(wěn)定性產(chǎn)生很大影響。(4).對(duì)延慶微電網(wǎng)項(xiàng)目的仿真模型的分析。首先對(duì)單個(gè)微電源進(jìn)行仿真,驗(yàn)證其控制方法的正確性;然后對(duì)整個(gè)系統(tǒng)方案進(jìn)行驗(yàn)證,并對(duì)延慶微電網(wǎng)項(xiàng)目的運(yùn)行結(jié)果進(jìn)行分析和說明。仿真結(jié)果驗(yàn)證了本文提出的策略和微電網(wǎng)系統(tǒng)級(jí)控制的有效性和可行性。本文對(duì)延慶微電網(wǎng)項(xiàng)目的運(yùn)行控制技術(shù)研究與應(yīng)用,具有一定的科學(xué)意義,具有很強(qiáng)的實(shí)際意義和較大的應(yīng)用價(jià)值。
[Abstract]:Distributed generation (DG) has the special advantages of less pollution, high energy efficiency, flexible installation location, less transmission and distribution resources and less transmission line loss, and has gradually become a powerful supplement and effective support for large power grid in the future. It is one of the development trends of power system in the future. However, a series of new problems such as stability, control and protection will arise when high permeable distributed generation is connected to the centralized large power grid. The background of this paper mainly comes from the Yanqing smart microgrid construction project. From the implementation of the project, the operation control technology of Yanqing microgrid project is studied. The implementation and application of Yanqing microgrid project are analyzed. (1). In this paper, the basic control strategy of microgrid is introduced, and the traditional droop characteristic based on no interconnection line and the improved algorithm based on it are analyzed, and the power transmission characteristics of parallel inverter are also discussed. (2). The theoretical analysis and adaptive damping strategy of three-phase voltage source inverter are carried out. Inverter is the core of microgrid system. In this paper, the mathematical model of three-phase voltage source inverter under dq axis is established, and then the adaptive damping strategy design of inverter control unit is introduced, and the feasibility and effectiveness of this model are verified by simulation. (3) The small signal model of parallel inverter is analyzed. Some parameters of the inverter, such as output line impedance and load impedance, control parameters such as sag gain and power detection filter constant, have a great influence on the stability of the system. (4). The simulation model of Yanqing microgrid project is analyzed. At first, a single micro-power supply is simulated to verify the correctness of the control method, and then the whole system scheme is verified, and the operation results of Yanqing micro-grid project are analyzed and explained. Simulation results verify the effectiveness and feasibility of the proposed strategy and microgrid system level control. The research and application of the operation control technology of Yanqing microgrid project is of scientific significance, practical significance and great application value.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM727

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王成山;高菲;李鵬;黃碧斌;丁承第;于浩;;低壓微網(wǎng)控制策略研究[J];中國電機(jī)工程學(xué)報(bào);2012年25期

2 時(shí)珊珊;魯宗相;周雙喜;閔勇;;中國微電網(wǎng)的特點(diǎn)和發(fā)展方向[J];中國電力;2009年07期

3 姚瑋;陳敏;牟善科;高明智;錢照明;;基于改進(jìn)下垂法的微電網(wǎng)逆變器并聯(lián)控制技術(shù)[J];電力系統(tǒng)自動(dòng)化;2009年06期

4 王成山;肖朝霞;王守相;;微網(wǎng)中分布式電源逆變器的多環(huán)反饋控制策略[J];電工技術(shù)學(xué)報(bào);2009年02期

5 Naveen Jain;S.N.Singh;文福拴;;分布式發(fā)電當(dāng)前趨勢(shì)與將來挑戰(zhàn)(英文)[J];電力科學(xué)與技術(shù)學(xué)報(bào);2008年04期

6 裴瑋;盛濵;孔力;齊智平;;分布式電源對(duì)配網(wǎng)供電電壓質(zhì)量的影響與改善[J];中國電機(jī)工程學(xué)報(bào);2008年13期

7 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(dòng)化;2007年19期

8 張純江;陳桂濤;祖峰;鄔偉揚(yáng);;一種全數(shù)字化互動(dòng)跟蹤式單相逆變電源并聯(lián)均流控制策略[J];中國電機(jī)工程學(xué)報(bào);2006年10期

9 胡學(xué)浩;分布式發(fā)電(電源)技術(shù)及其并網(wǎng)問題[J];電工技術(shù)雜志;2004年10期

10 孫元章,梅生偉;國際合作,優(yōu)勢(shì)互補(bǔ),開拓電力系統(tǒng)科研新領(lǐng)域[J];中國科學(xué)基金;2003年03期

相關(guān)博士學(xué)位論文 前1條

1 彭力;基于狀態(tài)空間理論的PWM逆變電源控制技術(shù)研究[D];華中科技大學(xué);2004年

相關(guān)碩士學(xué)位論文 前2條

1 劉霞;含多種分布式電源和儲(chǔ)能的微電網(wǎng)控制技術(shù)[D];浙江大學(xué);2012年

2 吳婷婷;分布式發(fā)電系統(tǒng)并網(wǎng)逆變器控制方法研究[D];長安大學(xué);2007年

，

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