【正文】 can provide users with a more good and reliable electricity can be used. Because of the distributed power supply through the grid after it for power grid operation in various regions and in the structure have taken place great changes, certain influence, so distributed power flow calculation will be able to play a certain role, it is also regarded as one of the important ways to evaluate the, as an important theoretical basis for power grid operation optimization, through longterm research proof, technology has been more mature, is conducive to the rapid development of the grid. Now, new energy development and utilization of distributed generation technology has bee a new research focus in the power industry. At present, research at home and abroad based on distributed power flow calculation method mainly focus on Newton Raphson (NewtonRaphson， NR), forward and backward substitution method, ZBUS Gauss 3 kinds of methods. In terms of power flow calculation, this paper divides DG into PQ, PV, PI and PQ (V) and other four kinds of node types, and establishes the power flow calculation model for each node type DG. In the traditional power flow calculation method based on, bined with the trend of the type of DG calculation model, is proposed, which can be used with different types of DG distribution work power flow calculation method, and the IEEE 33 examples to verify the feasibility of the algorithm. Keywords: Distribution Network, Distributed Power Supply, Power Flow Calculation 長沙學(xué)院 畢業(yè) 論文 XII 目 錄 摘 要 ............................................................................................... 3 ABSTRACT ......................................................................................... XI 目 錄 ................................................................................................ XII 第一章 緒論 .........................................................................................14 選題背景及意義 ................................................................................................ 14 含分布式電源的配電網(wǎng)研究的現(xiàn)狀 ............................................................... 15 分布式電源的發(fā)展及應(yīng)用概況 .......................................................... 15 分布式電源的潮流算法研究現(xiàn)狀 ...................................................... 16 本文主要工作 ................................................................................................... 17 第二章 分布式電源的建模 ...................................................................18 太陽能光伏發(fā)電 ............................................................................................... 18 光伏發(fā)電的工作原理 ............................................................................ 18 光伏發(fā)電的模型 .................................................................................. 19 燃料電池 ........................................................................................................... 21 燃料電池的工作原理 ............................................................................. 21 燃料電池的模型 .................................................................................... 22 風(fēng)力發(fā)電 ........................................................................................................... 23 風(fēng)力發(fā)電的工作原理 ............................................................................ 23 風(fēng)力發(fā)電的模型 .................................................................................... 23 第三章 配電網(wǎng)潮流計(jì)算 ......................................................................26 配電網(wǎng)潮流計(jì)算的概述 ................................................................................... 26 配電網(wǎng)潮流計(jì)算的基本要求 ................................................................ 26 基于回路分析法的配電網(wǎng)潮流計(jì)算 ................................................................ 27 回路分析法基礎(chǔ) ..................................................................................... 27 ..................................................................... 28 第四章 含分布式電源的配電網(wǎng)潮流計(jì)算 ............................................31 分布式電源的模擬 ............................................................................................ 31 PQ 恒定型分布式電源 ........................................................................... 31 PI 恒定型分布式電源 ............................................................................. 31 PQ(V)分布式電源 ................................................................................... 32 長沙學(xué)院 畢業(yè) 論文 XIII PV 恒定型分布式電源 ........................................................................... 32 分布式電源的處理方法 ........................................................................ 33 含 DG 的潮流計(jì)算方法 ..................................................................................... 34 配電網(wǎng)拓?fù)浣Y(jié)構(gòu)的矩陣描述 .............................................................. 34 潮流算法的實(shí)現(xiàn) .................................................................................. 35 潮流算法的流程 .................................................................................. 37 含 DG 配電網(wǎng)潮流計(jì)算方法的實(shí)現(xiàn) ................................................... 38 算例分析 ............................................................................................................ 39 結(jié) 論 ....................................................................................................41 參考文獻(xiàn) ...............................................................................................42 附錄 ......................................................................................................44 致 謝 ..................................................................................................45 長沙學(xué)院 畢業(yè) 論文 14 第一章 緒論 選題背景及意義 隨著負(fù)荷的快速增長以及電力市場 的逐步推行，傳統(tǒng)的集中式發(fā)電已經(jīng)不能滿足當(dāng)今社會(huì)對電力及能源供應(yīng)的需求。近