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研究生:張雅鈞
研究生(外文):Ya-Chun Chang
論文名稱:再生能源與配電三相併聯電流平衡探討
論文名稱(外文):Both Parallel System of Energy Resources and Distribution Systems to Approach Three-PhaseCurrent Balance
指導教授:曾燕明
指導教授(外文):Yen-Ming Tzeng
口試委員:許振廷黃鐘慶蘇玉生陳曦照曾燕明
口試委員(外文):Cheng-Ting HsuJong-Ching HuangYuh-Sheng SuShi-Jaw ChenYen-Ming Tzeng
口試日期:2011-01-06
學位類別:碩士
校院名稱:和春技術學院
系所名稱:電機工程研究所
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:2011
畢業學年度:99
語文別:中文
論文頁數:104
中文關鍵詞:市電併聯孤島系統再生能源配電系統不平衡率太陽能發電風力發電燃料電池
外文關鍵詞:Grid ConnectedIsland SystemRenewable EnergyDistribution SystemUnbalance RateSolar PowerWind PowerFuel Cell
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現有配電系統配合再生能源發電之併聯供電,如太陽能發電、風力發電、燃料電池發電等設備,利用變流器將再生能源發電設備所發出的電,轉換成交流電以後併入市電,不僅可以供電給負載使用,還可售電給電力公司獲得額外的報酬。
再生能源發電一般依變流器連接分為單相及三相,三相連接藉由三個單相變流器以Y或△連接形成三相。單相連接組成三相,若以同一能源場中,所產生之電力亦不盡相同,故三相就存在電流不平衡之問題,本文設定用單相併聯於再生能源發電之孤島及併聯系統之三相供電來探討三相電流平衡,因單相再生能源發電一併入三相配電系統將形成配電三相電流平衡之問題。本文設定27個分散式再生能源發電注入三相配電系統,區分為孤島三相供電及三相併聯供電系統來探討。於孤島三相供電系統,依負載相同大小之複數電流及實數電流為輸入,其中複數電流又區分與負載成共軛數及不成共軛數,以電流大小為判斷基準,並納入相位考量及不納入相位考量之不平衡率計算。於併聯三相供電系統,於原台電供電有負載及無負載下,以相同大小之複數電流及實數電流為輸入,以電流大小為判斷基準,考慮三相不平衡率計算。結論以相同大小之複數電流及同樣大小之電流模數之電流為輸入,以實數電流計算結果,以三相電流互補性之大小,可決定平衡率好壞。
The current electricity distribution system supplies power together with power generation of renewable energy such as the equipment of solar power generation, wind power generation, fuel-cell power generation, etc. Electricity generated by generating equipment of renewable energy are converted into alternating current and then incorporated into utility power which can not only supply power to loads but also can be sold to power companies for additional rewards.
  Power generation of renewable energy is generally divided into single-phase and three-phase according to connection modes of converters. Three-phase connection is made by three single-phase converters distributed like Y or △. Power generated by single-phase connection constitutes three-phase power. Power generated is different in the same energy field, therefore, three-phase power has unbalanced current. This thesis investigates balance of three-phase current by connecting single-phase current with renewable energy in parallel on distant islands and three-phase power supply of parallel system because the issue of imbalance of three-phase current emerges when single-phase power generation of renewable energy is incorporated into three-phase electricity distribution system. This thesis sets 27 power generation of distributed renewable energy which is then blended into three-phase electricity distribution system. Power supply system is divided into three-phase power supply on distant islands and three-phase parallel power supply for investigation. Three-phase power supply system on distant islands takes complex current with the same loads and actual current as the input, in which loads of complex current has both conjugated number and non-conjugated number based on current amount and unbalance rate is calculated both including phase and excluding phase. Three-phase parallel power supply system calculates unbalance rate of three-phase current under the circumstance of the original power supplied both with loads and without loads by Taipower and with the same amount of complex current and actual current as its input and current amount as its judging criterion. In conclusion, with the same amount of complex current and the same current mode as the input, effect of balance rate can be determined by calculation results based on actual current and complementation degree of three-phase current.
目  錄
摘要 I
Abstract III
目錄 V
圖目錄 VIII
表目錄 XIV
第一章 緒論 1
1-1 研究背景與動機 1
1-2 研究方法 3
1-3 章節架構 5
第二章 再生能源結合開關場之發電系統 7
2-1 再生能源發電原理 7
2-1-1 太陽能發電 7
2-1-2 風力發電 11
2-1-3 燃料電池 14
2-2 再生能源發電及供電簡介 20
2-3 開關場模型 23
2-4 實數三相不平衡率 25
2-5 複數三相不平衡率 26
2-6 最小不平衡決定投入之相別演算法 28
第三章 再生能源孤島系統三相電流不平衡率之比較 29
3-1孤島系統-實數三相電流為零之比較 29
3-2孤島系統-複數三相電流為零之比較 33
3-2-1孤島系統-輸入功率複數與初值成共軛數 36
3-2-2孤島系統-輸入功率複數與初值不成共軛數 40
3-2-3孤島系統-輸入功率複數與初值關係之比較 43

第四章 再生能源併聯市電配電系統 44
4-1併聯市電複數-三相電流為零之比較 44
4-2併聯市電複數-三相電流不為零之比較 48
4-2-1併聯系統-輸入功率複數與初值成共軛數 57
4-2-2併聯系統-輸入功率複數與初值不成共軛數 69
4-2-3併聯系統-輸入功率複數與初值關係之比較 82
4-3 併聯市電實數-三相電流為零之比較 83
4-4 併聯市電實數-三相電流不為零之比較 87

第五章 結論與未來展望 97
5-1 結論 97
5-2未來展望 98
參考文獻 101

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