本文選題：微電網(wǎng)　切入點(diǎn)：配電系統(tǒng)　出處：《山東大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：常規(guī)能源逐漸枯竭以及環(huán)境污染日益嚴(yán)重促使電力研究人員廣泛關(guān)注各種分布式發(fā)電技術(shù),微網(wǎng)作為各分布式發(fā)電技術(shù)并入電網(wǎng)的高效可靠方式自然成為一大研究熱點(diǎn)。微網(wǎng)運(yùn)行方式靈活,既能作為一個(gè)小的電力系統(tǒng)獨(dú)立運(yùn)行,很大程度上提高了其中負(fù)荷的運(yùn)行可靠性；又可以并入配電系統(tǒng)改變系統(tǒng)的結(jié)構(gòu)形式,改善傳統(tǒng)配電系統(tǒng)的運(yùn)行狀況。微網(wǎng)靠近負(fù)荷側(cè)而不需要建設(shè)輸電線路,對(duì)電系統(tǒng)經(jīng)濟(jì)運(yùn)行有著積極作用。本文主要研究微網(wǎng)對(duì)系統(tǒng)運(yùn)行可靠性的影響。微網(wǎng)接入改變了傳統(tǒng)配電系統(tǒng)的輻射狀結(jié)構(gòu)形式,多電源對(duì)負(fù)荷供電方式極大程度上提高了負(fù)荷的運(yùn)行可靠性。當(dāng)配電系統(tǒng)發(fā)生故障時(shí)微網(wǎng)能夠主動(dòng)斷開與主網(wǎng)的連接,保證微網(wǎng)內(nèi)負(fù)荷的正常穩(wěn)定運(yùn)行。故障修復(fù)后微網(wǎng)能夠通過(guò)PCC重新并入配網(wǎng),微網(wǎng)可以在孤網(wǎng)與并網(wǎng)兩種方式之間無(wú)縫切換。而且微網(wǎng)中分布式電源出力的隨機(jī)性使得系統(tǒng)運(yùn)行可靠性分析更加復(fù)雜,必須對(duì)原有配電系統(tǒng)可靠性分析的模型和方法做一定的改變。本文首先根據(jù)國(guó)內(nèi)外微網(wǎng)的研究狀況總結(jié)出微網(wǎng)的基本概念、微網(wǎng)的主要結(jié)構(gòu)形式和微網(wǎng)中各種分布式電源的工作原理,進(jìn)而根據(jù)微網(wǎng)的主要構(gòu)成部分介紹了微網(wǎng)兩種主要的運(yùn)行方式以及幾種主要控制方式,通過(guò)采取合理控制策略維持微網(wǎng)內(nèi)電壓和頻率水平,保證微網(wǎng)穩(wěn)定可靠運(yùn)行。然后介紹了傳統(tǒng)配電系統(tǒng)負(fù)荷點(diǎn)和系統(tǒng)側(cè)的可靠性指標(biāo)的物理含義以及計(jì)算方法,研究了構(gòu)成配電網(wǎng)的各類元件的可靠性模型及其適用的情況,在此基礎(chǔ)上給出了評(píng)估配電系統(tǒng)可靠性的幾種常用方法,并以IEEE BUS6系統(tǒng)作為研究對(duì)象,采用序貫蒙特卡羅法進(jìn)行仿真計(jì)算,將得到的結(jié)果與已知解析法得到的結(jié)果進(jìn)行對(duì)比,從而驗(yàn)證了時(shí)序蒙特卡羅法評(píng)估配電系統(tǒng)可靠性的準(zhǔn)確性。進(jìn)而通過(guò)具體算例對(duì)微網(wǎng)孤島運(yùn)行方式展開研究,利用HOMER軟件對(duì)某一海島的常規(guī)供電與微網(wǎng)供電方式分別進(jìn)行研究分析,驗(yàn)證了微網(wǎng)孤島運(yùn)行時(shí)對(duì)配電系統(tǒng)運(yùn)行可靠性和經(jīng)濟(jì)性的積極作用,對(duì)海島供電方式具有一定的借鑒意義和指導(dǎo)作用。最后利用最大熵原理模擬風(fēng)速以及ARMA模型模擬光照強(qiáng)度,建立考慮風(fēng)力發(fā)電和光伏出力不確定性的可靠性模型,以改進(jìn)的IEEE BUS6系統(tǒng)為測(cè)試系統(tǒng),通過(guò)時(shí)序蒙特卡羅法對(duì)該系統(tǒng)進(jìn)行分析研究,分析微網(wǎng)接入點(diǎn)、分布式電源出力間歇性等因素對(duì)系統(tǒng)運(yùn)行可靠性的影響作用,對(duì)微網(wǎng)的規(guī)劃以及提高系統(tǒng)運(yùn)行可靠性都有一定的指導(dǎo)意義。
[Abstract]:The gradual depletion of conventional energy sources and the increasing pollution of the environment have led power researchers to pay extensive attention to various distributed generation technologies. Microgrid, as an efficient and reliable way for distributed generation technology to be incorporated into power grid, has naturally become a hot research topic. Microgrid operation mode is flexible and can be operated independently as a small power system. The reliability of the load is improved to a great extent, and the distribution system can be incorporated into the distribution system to change the structure of the system and improve the operation of the traditional distribution system. The microgrid is close to the load side and does not require the construction of transmission lines. This paper mainly studies the effect of microgrid on system operation reliability. Microgrid access has changed the radiation structure of traditional distribution system. The operation reliability of the load is greatly improved by the mode of multi-power supply to the load. When the distribution system fails, the microgrid can actively disconnect from the main network. Ensure the normal and stable operation of the load in the microgrid. After the fault repair, the microgrid can be re-incorporated into the distribution network through PCC. The microgrid can be switched seamlessly between the isolated network and the grid-connected mode, and the randomness of the distributed power generation in the microgrid makes the reliability analysis of the system more complicated. Some changes must be made to the models and methods of reliability analysis of the original distribution system. Firstly, the basic concepts of microgrid are summarized according to the research situation of microgrid at home and abroad. The main structure of microgrid and the working principle of distributed power supply in microgrid are introduced. According to the main components of microgrid, two main operation modes and several main control modes of microgrid are introduced. The reasonable control strategy is adopted to maintain the voltage and frequency level in the microgrid to ensure the stable and reliable operation of the microgrid. Then the physical meaning and calculation method of the reliability index of the load point and the system side of the traditional distribution system are introduced. The reliability model and its application of various components in distribution network are studied. On the basis of this, several common methods to evaluate the reliability of distribution system are given, and the IEEE BUS6 system is taken as the research object. The sequential Monte Carlo method is used to simulate and calculate, and the results obtained are compared with those obtained by the known analytical method. Therefore, the accuracy of time sequence Monte Carlo method for evaluating the reliability of distribution system is verified, and the operation mode of microgrid islanding is studied by a concrete example. By using HOMER software, the conventional power supply and microgrid power supply mode in an island are studied and analyzed respectively, and the positive effect of microgrid islanding operation on the reliability and economy of distribution system is verified. Finally, the maximum entropy principle is used to simulate wind speed and ARMA model to simulate illumination intensity, and a reliability model considering uncertainty of wind power generation and photovoltaic output is established. Taking the improved IEEE BUS6 system as the test system, the system is analyzed by time sequence Monte Carlo method, and the effects of microgrid access points and distributed power generation intermittency on the reliability of the system are analyzed. It has certain guiding significance for the planning of microgrid and improving the reliability of the system.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM732

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 楊志淳;樂(lè)健;劉開培;謝雪景;;微電網(wǎng)并網(wǎng)標(biāo)準(zhǔn)研究[J];電力系統(tǒng)保護(hù)與控制;2012年02期

2 向月;劉俊勇;魏震波;劉友波;;可再生能源接入下新型可中斷負(fù)荷發(fā)展研究[J];電力系統(tǒng)保護(hù)與控制;2012年05期

3 劉文;楊慧霞;祝斌;;微電網(wǎng)關(guān)鍵技術(shù)研究綜述[J];電力系統(tǒng)保護(hù)與控制;2012年14期

4 曾鳴;朱曉麗;王濤;魏陽(yáng);薛松;;獨(dú)立運(yùn)營(yíng)模式下微網(wǎng)投資收益分析及運(yùn)營(yíng)建議[J];華東電力;2012年08期

5 鄒永正;;淺析微網(wǎng)的基本類型與發(fā)展方向[J];機(jī)電信息;2012年33期

6 李瑞生;;微電網(wǎng)關(guān)鍵技術(shù)實(shí)踐及實(shí)驗(yàn)[J];電力系統(tǒng)保護(hù)與控制;2013年02期

7 馮秀萍;李明輝;田立強(qiáng);;太陽(yáng)能光伏技術(shù)在溫室大棚控制系統(tǒng)中的應(yīng)用[J];科技致富向?qū)?2013年05期

8 王楓;祁彥鵬;傅正財(cái);;含微電網(wǎng)的配電網(wǎng)可靠性最優(yōu)化[J];電力系統(tǒng)保護(hù)與控制;2013年16期

9 豆興偉;趙宏偉;于海龍;齊圣;;含微網(wǎng)的國(guó)防工程供電保障系統(tǒng)可靠性評(píng)估[J];后勤工程學(xué)院學(xué)報(bào);2014年01期

10 葛少云;張?chǎng)?劉洪;徐櫟;趙波;張雪松;;基于點(diǎn)估計(jì)法的有源配電網(wǎng)概率可靠性評(píng)估[J];電力系統(tǒng)保護(hù)與控制;2014年12期

相關(guān)博士學(xué)位論文 前10條

1 蘇玲;微網(wǎng)控制及小信號(hào)穩(wěn)定性分析與能量管理策略[D];華北電力大學(xué)（北京）;2011年

2 張穎媛;微網(wǎng)系統(tǒng)的運(yùn)行優(yōu)化與能量管理研究[D];合肥工業(yè)大學(xué);2011年

3 欒兆菊;脈沖激光沉積法制備FeS_2薄膜的性能以及表面，應(yīng)力特征[D];浙江大學(xué);2011年

4 彭雙劍;微網(wǎng)運(yùn)行和電能質(zhì)量控制研究[D];湖南大學(xué);2011年

5 杜燕;微網(wǎng)逆變器的控制策略及組網(wǎng)特性研究[D];合肥工業(yè)大學(xué);2013年

6 任洲洋;光伏時(shí)空概率模型及其在電力系統(tǒng)概率分析中的應(yīng)用[D];重慶大學(xué);2014年

7 楊賀鈞;計(jì)及多因素的含風(fēng)能電力系統(tǒng)可靠性評(píng)估及優(yōu)化研究[D];重慶大學(xué);2014年

8 戚艷;微網(wǎng)廣義儲(chǔ)能系統(tǒng)協(xié)調(diào)控制策略及容量?jī)?yōu)化配置方法研究[D];天津大學(xué);2013年

9 張野;微網(wǎng)中電池儲(chǔ)能系統(tǒng)控制策略的研究[D];天津大學(xué);2014年

10 王昌照;含分布式電源配電網(wǎng)故障恢復(fù)與可靠性評(píng)估研究[D];華南理工大學(xué);2015年

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本文編號(hào)：1583350