【正文】
電力系統(tǒng)的基本任務(wù)是安全、可靠、經(jīng)濟(jì)地為用戶提供電能。而對(duì)電力系統(tǒng)正常運(yùn)行狀態(tài)的分析和計(jì)算是其中十分 重要的內(nèi)容。 開發(fā)工具采用 matlab,對(duì)具體算例建立模型并進(jìn)行仿真計(jì)算,結(jié)果圖表顯示。 參考文獻(xiàn)來源于圖書館關(guān)于電力系統(tǒng)穩(wěn)態(tài)計(jì)算的書籍和中國(guó)期刊網(wǎng)中文文獻(xiàn)。 III Ⅲ、進(jìn)度安排: 第 1~ 6 周 資料翻閱,掌握計(jì)算的基本理論及 matlab 編程 第 7~ 12 周 找好實(shí)際系統(tǒng),進(jìn)行計(jì)算 第 13~ 17 周 編程和調(diào)試 第 18~ 22 周 分析及撰寫論文 第 23 周 英文翻譯 第 24 周 準(zhǔn)備答辯 Ⅳ、主要參考資料: 1 電力工程基礎(chǔ) 2 電力系統(tǒng)穩(wěn)態(tài)分析 3 中國(guó)期刊網(wǎng)論文 4 英文文獻(xiàn) 5 matlab 編程 指導(dǎo)教師: 鄧立華 , 2020 年 12 月 6 日 學(xué)生姓名: 鄒愛龍 ,專業(yè)年級(jí): 2020 級(jí) 系負(fù) 責(zé)人審核意見( 從選題是否符合專業(yè)培養(yǎng)目標(biāo)、是否結(jié)合科研或工程實(shí)際、綜合訓(xùn)練程度、內(nèi)容難度及工作量等方面加以審核 ): 系負(fù)責(zé)人簽字: , 年 月 日 IV 摘要 電力系統(tǒng)的潮流計(jì)算在電力系統(tǒng)穩(wěn)態(tài)分析和電力系統(tǒng)設(shè)計(jì)中有很重要的作用,潮流計(jì)算也是電力系統(tǒng)暫態(tài)分析的基礎(chǔ)。到目前為止,利用電子計(jì)算機(jī)進(jìn)行電力系統(tǒng)的潮流計(jì)算的算法已經(jīng)出現(xiàn)了很多,其中應(yīng)用最為廣泛的是基于牛頓 —— 拉夫遜法的潮流計(jì)算方法。本文主要介紹了節(jié)點(diǎn)導(dǎo)納矩陣的形成方法。 由于牛頓 —— 拉夫遜潮流計(jì)算對(duì)于初值的給定有比較高的要求。本文詳細(xì)介紹了高斯 —— 賽德爾法和牛頓 —— 拉夫遜法迭代計(jì)算的過程。開發(fā)工 具采用 Matlab編程語言,采用讀寫 Excel 電子表格的方法進(jìn)行數(shù)據(jù)的輸入和輸出。 關(guān)鍵字 :潮流計(jì)算,節(jié)點(diǎn)導(dǎo)納矩陣,牛頓 —— 拉夫遜,高斯 —— 賽德爾, Matlab V Abstract Power flow calculation has a very important role in power system steadystate analysis and power system design, and it is also the basis of transient analysis in power system. Flow calculation is based on given conditions of the power system and calculates the operational status of every part of the system, including voltage and power. So far, there are kinds of algorithm which use the electronic puter in power flow calculation, the most widely used algorithm is the Newton Raphson power flow calculation method. Before we the puter in power flow calculation, we need to need to have the nodes of the work classified and numbered and establish a mathematical model of power work, namely the power system work equations. This paper describes the formation of the node admittance matrix . In the formation of the node admittance matrix, we need to transform the power work to equivalent circuit, which includes transformation of transmission lines and transformers. The Newton Raphson power flow calculation has a relatively high demand for a given initial value. So before the Newton Raphson iteration, we use Gauss Seidel iterative method to produce a more precise initial value. This paper describes the process of Gauss Seidel and Newton Raphson iteration. The main contents are the establishment of iterative equation, the calculation of Jacobian matrix and the calculation of power and voltage, as well as how to deal with the situation when a PV node transform to a PQ node iteration use the Matlab programming language as development tools, the input and output of the data process in the Excel spreadsheets. In this paper, we utilize a system contains 5 nodes to analyze , the result of the calculation by the Matlab program shows that the algorithm is convergence and practice. Key Words: Power flow calculation, node admittance matrix, Newton – Rap son, Gauss – Seidel, Matlab. VI 目 錄 第一章 緒論 .................................................................................................................. 1 一、 電力系統(tǒng)潮流計(jì)算的背景及意義 ..........................................