發(fā)布時(shí)間：2018-05-31 00:22

  本文選題：微電網(wǎng) + 諧波治理��； 參考：《河北工業(yè)大學(xué)》2014年碩士論文

【摘要】：微電網(wǎng)作為未來前景應(yīng)用廣闊的電力系統(tǒng)電網(wǎng)新型結(jié)構(gòu)，，其廉價(jià)，環(huán)保的發(fā)電模式，分布，靈活的輸電方式，在資源日益枯竭，集中大電網(wǎng)事故不斷的今天，成為了一個(gè)廣受矚目的研究熱點(diǎn)。但是，目前為止微電網(wǎng)的研究還不甚成熟，經(jīng)常遇到控制方法不夠精確，運(yùn)行方案不夠穩(wěn)定等問題。特別是大量分布式電源的并網(wǎng)運(yùn)行極大的影響了微電網(wǎng)中的電能質(zhì)量，并給潮流分布等帶來了不確定性。本文微電網(wǎng)為研究對象，著重考慮分布式電源的對系統(tǒng)的影響，對適合諧波治理與無功控制的相關(guān)方法進(jìn)行了探究。 本文首先闡述了微電網(wǎng)的基本構(gòu)成，以及微電網(wǎng)諧波的危害以及無功分布對系統(tǒng)的影響。提出了常用的諧波治理原則與無功控制方法。根據(jù)分布式電源的相關(guān)特性，建立了相應(yīng)的數(shù)學(xué)模型，總結(jié)出各自的并網(wǎng)接口方式。針對微電網(wǎng)系統(tǒng)特別是分布式電源產(chǎn)生的諧波進(jìn)行了深入分析，提出了基于并聯(lián)型有源濾波器的諧波治理方案。著重研究了分布式電源的特殊節(jié)點(diǎn)類型在牛頓拉夫遜潮流計(jì)算的處理方式.總結(jié)出一套適合微電網(wǎng)的牛頓拉夫遜潮流計(jì)算流程。并分別從分布式電源類型，容量，接入位置對微電網(wǎng)系統(tǒng)節(jié)點(diǎn)電壓、網(wǎng)損進(jìn)行了研究。通過改進(jìn)遺傳算法，提出了基于遺傳算法的無功優(yōu)化方案，通過對建立的33節(jié)點(diǎn)微電網(wǎng)系統(tǒng)進(jìn)行算例方針，驗(yàn)證優(yōu)化方案的可行性。文章最后，將多Agent系統(tǒng)嘗試引入微電網(wǎng)無功控制當(dāng)中，在微電網(wǎng)運(yùn)行異常時(shí)，通過協(xié)調(diào)各級Agent工作，驗(yàn)證了該系統(tǒng)的實(shí)時(shí)性，可靠性。為今后多Agent系統(tǒng)在微電網(wǎng)上的深入應(yīng)用，提供了一些思路。
[Abstract]:As a new structure of power system with broad application in the future, microgrid has cheap, environmentally friendly power generation mode, distribution and flexible transmission mode. Today, when resources are increasingly exhausted and large power grid accidents are concentrated, It has become a hot research topic. However, so far, the research of microgrid is not very mature, often encountered some problems, such as the control method is not accurate enough, the operation scheme is not stable enough and so on. Especially, the power quality in microgrid is greatly affected by the grid-connected operation of a large number of distributed power sources, which brings uncertainty to the distribution of power flow and so on. This paper focuses on the influence of distributed power generation on the system and probes into the relevant methods suitable for harmonic control and reactive power control. In this paper, the basic structure of microgrid, the harm of harmonic and the influence of reactive power distribution on the system are discussed. The common harmonic control principles and reactive power control methods are put forward. According to the characteristics of distributed power generation, the corresponding mathematical models are established and their grid-connected interfaces are summarized. The harmonic generation of microgrid system, especially distributed generation, is deeply analyzed, and a harmonic control scheme based on shunt active power filter is proposed. The processing method of special node type of distributed power generation in Newton Raphson power flow calculation is studied. A set of Newton-Raphson power flow calculation process suitable for microgrid is summarized. The node voltage and network loss of microgrid system are studied from distributed generation type, capacity and access location. By improving genetic algorithm, the reactive power optimization scheme based on genetic algorithm is proposed. The feasibility of the optimization scheme is verified by the example of the established 33-bus microgrid system. Finally, the multi-Agent system is introduced into the reactive power control of microgrid. When the microgrid is running abnormal, the real-time and reliability of the system is verified by coordinating all levels of Agent. Some ideas are provided for the further application of multi-Agent system in microgrid in the future.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM73

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本文編號：1957478