臺灣博碩士論文加值系統

本論文探討併網型太陽能發電系統對離島孤立系統頻率及電壓之影響。本文假設一座變流器輸出300 kW之市電併聯型太陽能發電系統併入台灣某離島孤立系統並利用Matlab/Simulink軟體以該島真實資料建立離島系統數學模型，及建構市電併聯型太陽能發電系統含太陽能陣列、升壓轉換器、換流器等作為模擬分析用。模擬內容包括太陽能發電系統在不同併接位置對電壓閃爍影響、太陽光照度變化影響，照度變化下柴油發電機組以不同模式運轉，三相短路故障及太陽能發電系統故障跳脫等。經由模擬結果探討太陽能發電系統之動態及暫態特性及離島系統穩定度。

This thesis analyzes the effects of a grid-connected photovoltaic (PV) generation system on the voltage and frequency of a real isolated island power system in Taiwan. A 350 kW PV system to be connected with the electric utility of the island is investigated in this thesis. Simulations of the isolated island power system and the PV grid-connected system are realized using Matlab/Simulink. A complete transient and dynamic stability analysis is investigated. Impacts of PV system connection locations in the isolated island power system, solar irradiation variation and optimal operational mode of diesel governors are studied. PV system dynamic behavior during three-phase fault is also included and proper connection capacity of PV system is estimated. Simulation results show a considerable effect of the PV system on voltage and frequency fluctuations. It provides a suggestion of generator locations on the isolated island power system in the future.

摘 要 I
ABSTRACT II
誌謝 III
目 錄 IV
圖表目錄 VI
第一章 緒論 1
1.1 研究背景與動機 1
1.2 研究目的及方法 2
1.3 論文大網 2
第二章 某離島電力系統簡介與模型建立 4
2.1 前言 4
2.2 系統穩態模型 4
2.2.1 孤島型電力系統系統結構 4
2.2.2 系統單線圖 4
2.3 系統動態模型 6
2.3.1 發電機模型 6
2.3.2 柴油引擎調速機模型 8
2.3.3 激磁機模型 9
2.4 調速機頻率控制方式 10
2.4.1 汽渦輪機調速機基本控制原理 10
2.4.2 一般大型火力機組調速機控制應用 14
2.4.3 柴油引擎調速機頻率控制方式 16
2.5 案例分析 18
2.6 結論 24
第三章 太陽能發電系統簡介與數學模型建立 25
3.1 前言 25
3.2 太陽能陣列數學模組 25
3.2.1 太陽能電池 25
3.2.2 太陽能模組 27
3.2.3 太陽能陣列 30
3.3 最大功率追蹤控制器 32
3.4 直流/直流升壓器模型 34
3.5 變流器 35
3.6 電流控制器 37
3.7 結論 39
第四章 穩態模擬分析 40
4.1 前言 40
4.2 PV併網對系統電壓影響分析 41
4.3 太陽光照度變化影響分析 42
4.3.1 照度變化從1000 W/m2下降至200 W/m2模擬分析 42
4.3.2 照度變化從200 W/m2上升至1000 W/m2模擬分析 48
4.4 照度變化下柴油機組以不同運轉模式模擬分析 54
4.5 照度變化下PV併接點不同模擬分析 61
4.6 結論 67
第五章 事故模擬分析 68
5.1 前言 68
5.2 三相短路故障分析 68
5.3 太陽能發電系統事故跳脫分析 75
5.4 結論 79
第六章 結論與未來研究方向 80
6.1 結論 80
6.2 未來研究方向 80
參考文獻 82
作者簡介 85

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