本文關(guān)鍵詞：計及分布式電源的配電網(wǎng)供電可靠性評估　出處：《上海交通大學(xué)》2008年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 配電網(wǎng) 分布式電源 孤島 可靠性 評估

【摘要】： 近年來,全球范圍內(nèi)的分布式電源技術(shù)發(fā)展迅速,在電力系統(tǒng)中發(fā)揮著越來越重要的作用。分布式電源不僅能夠提高能源的利用率,而且對于緩解電網(wǎng)峰時缺電的矛盾具有積極意義。從可持續(xù)發(fā)展、國家能源戰(zhàn)略、降低環(huán)境污染和建設(shè)和諧社會的觀點來看,發(fā)展分布式電源技術(shù)是我國的必然選擇。 隨著分布式電源接入配電網(wǎng),配電網(wǎng)供電可靠性的評估模型發(fā)生了變化。分布式電源與傳統(tǒng)電源相比,其輸出功率更具有隨機性。另外,在傳統(tǒng)的配電網(wǎng)可靠性評估中,考察的饋線由單一電源點供電,是輻射式供電方式,任何一條饋線上發(fā)生故障,都可能導(dǎo)致饋線后面的負(fù)荷全部停電,而分布式電源接入配電網(wǎng)后,網(wǎng)絡(luò)變?yōu)橐粋�多電源與用戶相連的網(wǎng)絡(luò),當(dāng)饋線上發(fā)生故障時,配電網(wǎng)可能會出現(xiàn)含有分布式電源的孤島運行方式,相應(yīng)的可靠性評估模型和方法也將發(fā)生變化。 本文提出一種計及分布式電源影響的配電網(wǎng)可靠性評估方法。首先根據(jù)分布式電源與傳統(tǒng)電源不同的特點,建立適用于含分布式電源的配電網(wǎng)可靠性評估的電源模型;然后根據(jù)配電網(wǎng)中負(fù)荷的重要程度,以最大等值有效負(fù)荷為目標(biāo)函數(shù),建立含有分布式電源的配電網(wǎng)孤島劃分的優(yōu)化模型,并采用深度優(yōu)先搜索和廣度優(yōu)先搜索技術(shù)求解;結(jié)合配電網(wǎng)孤島運行方式,本文對傳統(tǒng)的可靠性評估中的最小路法進行改進,使之適用于含分布式電源的配電網(wǎng)供電可靠性分析計算。 通過對IEEE-RBTS Bus6系統(tǒng)的仿真計算,說明了本文提出的模型及算法的有效性。計算結(jié)果也表明,分布式電源合理接入配電網(wǎng)后,可以提高配電網(wǎng)的供電可靠性。
[Abstract]:In recent years, distributed power generation technology in the world is developing rapidly, which plays a more and more important role in the power system. Distributed power generation can not only improve the efficiency of energy utilization. And it is of positive significance to alleviate the contradiction between peak and lack of electricity. From the perspective of sustainable development, national energy strategy, reducing environmental pollution and building a harmonious society. The development of distributed power generation technology is an inevitable choice in China. With the distributed power supply connected to the distribution network, the evaluation model of power supply reliability of distribution network has changed. Compared with traditional power supply, the output power of distributed generation is more random. In the traditional reliability evaluation of distribution network, the feeder is supplied by a single power supply point, which is a radiation mode of power supply. Any fault on the feeder line may lead to all power outages behind the feeder line. After the distributed power supply is connected to the distribution network, the network becomes a network with multiple power sources connected to the users. When the feeder fails, the distribution network may have an island operation mode with distributed power. The corresponding reliability evaluation models and methods will also change. In this paper, a method of reliability evaluation for distribution network considering the influence of distributed generation is proposed. Firstly, according to the different characteristics of distributed generation and traditional power supply. A power supply model suitable for reliability evaluation of distribution network with distributed generation is established. Then according to the importance of the load in the distribution network, taking the maximum equivalent payload as the objective function, the optimization model of island partition of distribution network with distributed generation is established. Depth first search and breadth first search are used to solve the problem. Combined with the islanding operation mode of distribution network, this paper improves the traditional method of minimum path in reliability evaluation, and makes it suitable for the reliability analysis and calculation of distribution network power supply with distributed generation. Through the simulation of IEEE-RBTS Bus6 system, the effectiveness of the proposed model and algorithm is illustrated. The results also show that the distributed power generation is connected to the distribution network reasonably. It can improve the power supply reliability of distribution network.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2008
【分類號】：TM732

【引證文獻】

相關(guān)期刊論文 前5條

1 別朝紅;李更豐;王錫凡;;含微網(wǎng)的新型配電系統(tǒng)可靠性評估綜述[J];電力自動化設(shè)備;2011年01期

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相關(guān)博士學(xué)位論文 前1條

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相關(guān)碩士學(xué)位論文 前9條

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7 王湘贊;計及風(fēng)電場的配電系統(tǒng)供電可靠性研究[D];華南理工大學(xué);2013年

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本文編號：1437175