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畢業(yè)設(shè)計(jì)---微電網(wǎng)的孤島檢測研究-三相逆變器接口建模-畢業(yè)設(shè)計(jì)(已修改)

2025-02-04 04:43 本頁面
 

【正文】 畢業(yè)設(shè)計(jì)說明書 (論文 ) 微電網(wǎng)的孤島檢測研究 — 三相逆變器接口建模 學(xué)生姓 名 : 班級學(xué) 號 : 院、系、部 : 專 業(yè) : 指 導(dǎo) 教 師 : 2021 年 06 月 南 京 I Undergraduate Design(Thesis) Study on island detection in Micro Grids — Threephase inverter interface modeling BY NI JINJIE Supervised by Lecturer LI Jun School of Electric Power Engineering Nanjing Institute of Technology June 2021 II 摘要 由于科技進(jìn) 步和環(huán)境保護(hù)的要求,一些分布能源( DER)如內(nèi)燃機(jī)( IC )、微型燃?xì)廨啓C(jī)、光伏發(fā)電、燃料電池和風(fēng)力發(fā)電,已經(jīng)在配電網(wǎng)中應(yīng)用。獨(dú)立分布式發(fā)電的應(yīng)用可以解決很多問題,但其本身也存在不少缺陷。為更好地實(shí)現(xiàn)分布式發(fā)電的潛力可以采用系統(tǒng)的方法,也就是使電源和相關(guān)的負(fù)載構(gòu)成一個(gè)子系統(tǒng)或 “微電網(wǎng) ”( MG)。 本文的主要目的是,總結(jié)和研究三相逆變器建模。前面介紹了微電網(wǎng)的研究現(xiàn)狀,其中重點(diǎn)介紹微電網(wǎng)在歐洲和日本的發(fā)展。而后比較分析了逆變器在反孤島技術(shù)中的應(yīng)用和逆變器的控制方式比較。最后使用 MATLAB 中的 Simulink 工具建立了三相逆變器模型。并且在最后進(jìn)行了仿真,給出了結(jié)果。 關(guān)鍵詞: 微電網(wǎng) ,反孤島 ,三相逆變器 Abstract Due to the technology development and environment protection, some distributed energy resources (DER), such as internal bustion (IC) engines, gas turbines, micro turbines, photovoltaic, fuel cells and windpower, have emerged within the distribution system. However, application of individual distributed generators can cause as many problems as it may solve. A better way to realize the emerging potential of distributed generation and associated loads is a subsystem called “Micro Grid” (MG). The main purpose of this paper is summarized and the research, threephase inverter modeling. In front of the work are introduced, including research status on micro grid in Europe and Japan. After paring the inverter in the island39。s application and technical inverter control method. Finally the Simulink tool use MATLAB threephase inverter model is established. And in the end, the simulation results. Keywords: micro grid, antiisianding ,threephase inverter 微電網(wǎng)的孤島檢測研究 三相逆變器接口建模 III 目錄 第一章 緒論 ..................................................................................................................... 1 課題背景 .................................................................................................................. 1 全球能源危機(jī)及面臨的環(huán)境問題 ................................................................... 1 微電網(wǎng)定義 ....................................................................................................... 2 國外研究現(xiàn)狀 ................................................................................................... 2 并網(wǎng)逆變器結(jié)構(gòu)簡介與研究方向 .......................................................................... 3 課題研究的主要內(nèi)容與意義 .................................................................................. 5 第二章 并網(wǎng)逆變器的防孤島技術(shù) ................................................................................. 5 孤島效應(yīng)的概念 ...................................................................................................... 5 孤島效應(yīng)可能導(dǎo)致的危險(xiǎn)和孤島效應(yīng)出現(xiàn)的原因 .............................................. 6 檢測孤島的方法 ...................................................................................................... 9 逆變器內(nèi)部無源法 ........................................................................................... 9 逆變器內(nèi)部有源法 ........................................................................................... 9 其它的一些外部檢測方法 ............................................................................... 9 孤島檢測方法小結(jié) ......................................................................................... 10 本章小結(jié) ................................................................................................................ 10 第三章 并網(wǎng)逆變器控制技術(shù) ....................................................................................... 10 逆變器的控制技術(shù)介紹 ........................................................................................ 10 模擬控制技術(shù)介紹 ......................................................................................... 11 數(shù)字控制技術(shù)介紹 ......................................................................................... 11 逆變器的控制目標(biāo) ................................................................................................ 12 電網(wǎng)對逆變器的要求 ..................................................................................... 13 IV 逆變器的控制策略比較 ........................................................................................ 13 電流滯環(huán)比較 ................................................................................................. 13 定時(shí)比較方式 ..........................................................
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