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研究生:李政道
研究生(外文):Cheng-Tao Li
論文名稱:應用相序不平衡演算法設計靜態同步補償器
論文名稱(外文):Design of Static Synchronous Compensators Using the Sequence Unbalance Algorithm
指導教授:許源浴許源浴引用關係
指導教授(外文):Yuan-Yih Hsu
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:電機工程學研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:113
中文關鍵詞:補償器反流器無效必v不平衡
外文關鍵詞:reactive powerunbalanceinvertercompensator
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由於高科技產業的發展,使敏感性設備大量地使用在工業界,而這些敏感性設備要求比較高的電力品質。在電力系統中常見的由接地故障所引起的電壓驟降、電壓不平衡,通常會導致這類敏感性設備的誤動作或操作中斷。為確保能對電壓變動較靈敏的負載提供一高品質的電力供應,傳統的作法是裝設不斷電供電系統(Uninterruptible Power Supplies:簡稱UPS);然而這是成本較高的解決方式,且對於其所使用的蓄電池也需定期保養。
本論文中將提出應用相序不平衡演算法設計靜態同步補償器,這是由一個三相脈波寬度調變(Pulse Width Modulation;PWM)的電壓型變流器連接一個直流電容器所組成。在系統架構方面,則採用數位式的架構,並以個人電腦為基礎,配合研華科技公司PCL-1800資料擷取卡來完成靜態同步調相器的控制核心,且並聯至配電系統上。由所得模擬與實驗結果發現,由於負載不平衡及單相接地故障產生電壓不平衡,可經由本論文所設計之靜態同步調相器,而達到降低不平衡率的目的。
Sensitive equipments used by high technology industries require highly quality power supplies. Typical voltage sages and unbalances caused by ground faults in the power system often interrupt the operation of these sensitive equipments.
A sequence unbalance algorithm will be proposed to design of a static synchronous compensator (STATCOM) which comprises a three- phase voltage-sourced Pulse Width Modulation (PWM) inverter with a dc capacitor. The control kernel of the STATCOM is implemented by a PC- based digital system with Advanced PCL-1800 data acquisition boards. From results of simulations and experiments, it is found that voltage un- balance can be effectively reduced by the proposed STATCOM.
摘要......................................................i
Abstract.................................................ii
目錄....................................................iii
圖目錄..................................................vii
表目錄.................................................xiii
第一章 緒論...............................................1
1.1 研究背景與動機........................................1
1.2 現有相關文獻概況......................................3
1.3 研究方法與目的........................................6
1.4 論文內容介紹..........................................7
第二章 靜態同步補償器簡介.................................9
2.1 前言..................................................9
2.2 靜態同步補償器原理....................................9
2.2.1 電壓穩定度.........................................12
2.2.2 暫態穩定度.........................................14
2.3 靜態同步補償器電路分析...............................16
2.3.1 電壓源型式變流器之基本工作原理...................18
2.3.2 補償器特性分析...................................20
2.4 元件參數決定與訊號量測...............................22
2.4.1 電容器電壓與電容值設計...........................22
2.4.2 補償器線路電感器的設計...........................23
2.4.3 補償器容量的計算.................................25
2.5 脈衝寬度調變(PWM)切換技術............................25
第三章 理論基礎..........................................30
3.1 前言............................................30
3.2 三相不平衡率的定義..............................30
3.3 補償負載端電壓不平衡演算法之推導................32
3.3.1 靜態同步補償器之基本原理.........................32
3.3.2 靜態同步補償器之數學推導.........................34
第四章 靜態同步補償器之實體製作..........................39
4.1 前言............................................39
4.2 硬體電路製作....................................40
4.2.1 實作電路之系統架構..........................40
4.2.2 研華PCL-1800資料擷取卡之簡介與設定..........42
4.2.3 電力電路之製作..............................48
4.2.4 驅動電路之製作..............................53
4.2.5 同步控制電路及鎖相電路之製作................58
4.2.6 其它相關硬體之製作..........................64
4.3 軟體程式規劃....................................67
4.3.1 軟體簡介....................................67
4.3.2 軟體程式之規劃設計..........................68
4.3.3 數位低通濾波器..............................70
4.3.4 類比訊號輸入控制流程........................70
4.3.5 切換信號控制流程............................72
第五章 模擬結果與分析...................................73
5.1 前言............................................73
5.2 三相三線式系統電壓不平衡補償....................73
5.2.1 單相接地故障(接地電阻 ).....................74
5.2.2 單相接地故障(接地電阻 ).....................79
5.2.3 三相負載不平衡..............................84
第六章 實驗結果與分析...................................89
6.1前言.............................................89
6.2 實驗結果........................................89
6.2.1 單相接地故障(接地地阻 ).....................90
6.2.2 單相接地故障(接地電阻 ).....................96
6.2.3 三相負載不平衡.............................103
第七章 結論.............................................109
7.1 結論...........................................109
7.2 未來研究方向...................................110
參考文獻................................................112
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