臺灣博碩士論文加值系統

本論文係研究以閘控串聯電容器來抑制含有蒸汽渦輪機以及風力渦輪機發電系統次同步扭轉振盪。文中係以國際電機電子工程師學會次同步共振之第一標準模型做為基礎，與以雙饋式感應發電機為主之離岸式風場整合後，經由共同匯流排與串聯補償電容器連接至無限匯流排，探討當離岸式風場併入後，對原有系統所造成之影響。本論文於三相平衡系統下利用交直軸等效電路模型，分別建立同步發電機、以雙饋式感應發電機為主之離岸式風場及閘控串聯電容器等模型，並利用極點安置法設計閘控串聯電容器之比例-積分-微分阻尼控制器。在穩態特性方面，針對線路串聯補償比、同步發電機之端電壓、輸出功率、輸出功率因數以及風場風速變動做頻域特徵值分析。在暫態及動態模擬方面，完成轉矩干擾、風速變動以及三相短路故障等模擬結果。由穩態、動態及暫態模擬結果得知，當加入閘控串聯電容器結合比例-積分-微分阻尼控制器後，能有效抑制含有風場之蒸汽渦輪機發電系統的次同步扭轉振盪。

This thesis presents the suppression of subsynchronous resonance (SSR) in hybrid steam-turbine and wind-turbine generation systems using a thyristor-controlled series capacitor (TCSC). This research is based on the IEEE First Benchmark Model joining with a doubly-fed induction generator (DFIG)-based offshore wind farm (OWF). The q-d axis equivalent-circuit model under three-phase balanced loading conditions is used to establish the complete studied system. A proportional-integral- derivative (PID) damping controller of the TCSC is designed by using pole-assignment approach based on modal control theory. Steady-state characteristics of the studied system under different series compensation ratios, wind speed of OWF as well as terminal voltage, output active power, and power factor of the synchronous generator are performed. Time-domain dynamic simulations under disturbance conditions are also carried out. The results show that the proposed TCSC joined with the designed damping controller are effective to suppress the SSR of the integrated power systems.

目錄
頁次
中文摘要 I
英文摘要 II
誌謝 III
目錄 IV
表目錄 VII
圖目錄 X
符號說明 XV
第一章 緒論 1
1-1 研究動機 1
1-2 串聯電容補償簡介 3
1-3 相關文獻回顧 6
1-4 本論文之貢獻 11
1-5 研究內容概述 11
第二章 系統與數學模型 13
2-1 前言 13
2-2 質量-彈簧-阻尼器系統之數學模型 17
2-3 調速機之數學模型 18
2-4 蒸汽渦輪機轉矩之數學模型 19
2-5 同步發電機之數學模型 20
2-6 激磁機之數學模型 23
2-7 串聯電容補償系統之數學模型 24
2-8 閘控串聯電容器之數學模型 24
2-9 風速之數學模型 25
2-10 風渦輪機之數學模型 28
2-11 風渦輪機與發電機間轉矩之模型 30
2-12 旋角控制器之模型 32
2-13 離岸式風場雙饋式感應發電機之模型 33
第三章 利用極點安置法設計阻尼控制器 40
3-1 前言 40
3-2 PID阻尼控制器之設計 40
3-3 控制器參數之靈敏度分析 47
第四章 系統之穩態分析 52
4-1 前言 52
4-2 架構一之穩態分析 54
4-2-1 輸電線路補償比變化時之系統SSR
模態特徵值分析 .55
4-2-2 發電機輸出實功率變化時之系統SSR
模態特徵值分析 64
4-2-3 發電機端電壓變化時之系統SSR
模態特徵值分析 73
4-2-4 發電機功率因數變化時之系統SSR
模態特徵值分析 .82
4-3 架構二之穩態分析 91
4-3-1 輸電線路補償比變化時之系統SSR
模態特徵值分析 .91
4-3-2 風速變動時之系統SSR模態特徵值分析 100
第五章 動態與暫態響應分析 109
5-1 前言 109
5-2 架構一之動態分析 109
5-2-1 發電機發生轉矩干擾時之動態分析 110
5-2-2 無限匯流排發生三相短路故障時之暫態分析 129
5-3 架構二之動態分析 148
5-3-1 風場發生轉矩干擾時之動態分析 148
5-3-2 風場發生風速變動時之動態分析 166
5-3-3 無限匯流排發生三相短路故障時之暫態分析 184
第六章 結論與未來研究方向 208
6-1 結論 208
6-2 未來研究方向 209
參考文獻 210
附錄 216
作者簡介 218

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