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研究生:黃郁文
研究生(外文):Yu-Wen Huang
論文名稱:同相供電之故障分析與保護協調研究及應用設計
論文名稱(外文):Study on Fault Analysis, Protection Coordination and Application Design for Same-phase Power Supply Scheme
指導教授:陳在相陳在相引用關係楊念哲楊念哲引用關係
指導教授(外文):Tsai-Hsiang ChenNien-Che Yang
口試委員:陳在相楊念哲吳瑞南辜志承郭政謙陳昭榮楊金石蒲冠志謝廷彥
口試委員(外文):Tsai-Hsiang ChenNien-Che YangRuay-Nan WuJyh-Cherng GuCheng-Chien KuoChao-Rong ChenJin-Shyr YangGuan-Chih PuTing-Yen Hsieh
口試日期:2019-07-20
學位類別:博士
校院名稱:國立臺灣科技大學
系所名稱:電機工程系
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:2019
畢業學年度:107
語文別:中文
論文頁數:102
中文關鍵詞:同相供電分區輪流停電低頻卸載零相序阻抗電力潮流故障分析保護協調
外文關鍵詞:same-phase power supplypower cut-off alternately by districtunder frequency load sheddingzero phase sequence impedancepower flowfault analysisprotection coordination
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本論文旨在探究系統在採行「同相供電」模式下之故障電流與保護協調問題及提出可行之同相供電應用設計。首先,蒐整相關文獻與技術資料、探討各國配電系統架構與卸載策略,再藉以研析同相供電之學理、方法及其特性與功能。續之,應用Matlab/Simulink建構配電系統主要元件之數學模型與功能方塊,並進行配電系統在「正常供電」與「同相供電」兩種操作模式下運作時之系統電力潮流與故障電流之模擬與分析及差異檢討。研究結果除驗證「同相供電」確可在系統供電能力不足或發生緊急事故時,大規模卸除耗電量較大之電力負載,但持續供電給耗電量較小之重要負載;同時也證明在前揭兩種供電模式下之故障電流大小差異不大,並藉此探討在「同相供電」模式下之保護協調問題,俾供應用設計時參考。最後,本論文提出可使用戶重要負載在不完全斷電情況下切換為同相供電模式之設計方法與應用範例。本論文所提方法與技術亦可應用於微電網與智慧建築系統中,研究成果有助於加速同相供電的落實應用,有效紓解分區輪流停電所造成的不便與衝擊。
The major purpose of this dissertation is to examine the short-circuit current and protection coordination scheme under “same-phase power supply” operation mode and to propose a feasible application design of same-phase power supply scheme. Firstly, the relevant literature and technical data are collected, and the distribution system architecture and load shedding strategy of various country are explored. The theory, methods, characteristics, and functions of the same-phase power supply scheme are investigated as well. Then, the mathematical models and function blocks for the major components of the power distribution systems are constructed by Matlab/Simulink. The power flows and short-circuit currents are simulated, analyzed and examined under the “normal” and “same-phase” power supply operation modes. The simulation results verify that the “same-phase power supply scheme” not only can widely shed loads with large power consumptions under the system power shortage or emergency but also can continue supplying power to the essential loads with low power consumptions. Meanwhile, for reference of application design, it also proves that the difference between the short-circuit currents under the “normal” and “same-phase” power supply modes is insignificant, and the protection coordination under the “same-phase power supply” mode is explored. Finally, an application design technique and example are proposed to switch operation mode from the “normal” to “same-phase” power supply mode without interrupting the critical loads. The proposed methods and techniques can also be applied to microgrids and smart buildings. The research outcomes of this dissertation are of value to accelerate the implementation of same-phase power supply scheme and then effectively relieve the inconvenience and impact caused by the “power cut-off alternately by districts”.
中文摘要 I
Abstract Ⅲ
誌謝 Ⅴ
目錄 Ⅶ
圖目錄 ⅩⅠ
表目錄 XⅤ
符號及縮寫 ⅩⅦ
第一章 緒論 1
1.1 研究背景與動機 1
1.2 研究方法與步驟 3
1.3 研究貢獻 4
1.4 論文架構 4
第二章 各國配電系統架構與緊急卸載策略探討 7
2.1 前言 7
2.2 典型配電系統架構 7
2.2.1 說明 7
2.2.2 典型配電變電所架構 9
2.2.3 配電系統型態 11
2.2.4 配電變壓器結線與供電方式及低壓系統供電等級 14
2.3 緊急卸載策略 16
2.3.1 說明 16
2.3.2 影響系統頻率低下之參數與極限 17
2.3.3 台電公司電力系統卸載模式與策略 18
2.4 本章小結 20
第三章 同相供電學理與方法及其應用 23
3.1 前言 23
3.2 同相供電之學理及其方法與技術 23
3.2.1 基本概念 23
3.2.2 基本方法 24
3.2.3 實現技術 25
3.3 配電變壓器結線與同相供電方法之應用探討 26
3.4 應用同相供電方法時負載分類與分群之考量 29
3.5 小結 29
第四章 主要配電系統元件等效電路模型建立及同相供電模式電力潮流
分析 31
4.1 前言 31
4.2 配電系統元件等效電路模型 31
4.2.1 電源等效電路模型 31
4.2.2 配電饋線等效電路模型 33
4.2.3 配電變壓器組等效電路模型 36
4.2.4 負載等效電路模型 42
4.3 饋線零相序阻抗參數建立與應用 43
4.3.1 說明 43
4.3.2 近似法 43
4.3.3 範例饋線應用 44
4.4 範例系統電力潮流模擬分析 45
4.4.1 說明 45
4.4.2 範例系統A(三相平衡) 46
4.4.3 範例系統B(三相不平衡) 50
4.4.4 小結 54
第五章 同相供電模式下短路故障分析與保護協調研究 55
5.1 前言 55
5.2 範例系統單線圖與參數設定 56
5.2.1 範例系統單線圖 56
5.2.2 模擬限制與參數設定 57
5.3 範例系統故障分析 61
5.3.1 Case 1(饋線長度為1公里) 61
5.3.2 Case 2(饋線長度為25公里) 62
5.4 標么法手算驗證 68
5.4.1 狀況A(1φ/L-n) 68
5.4.2 狀況B(3φ/GnY-GnY) 70
5.5 模擬結果討論 71
5.6 系統保護協調研究 75
第六章 同相供電方法於智慧建築配電系統之應用設計 77
6.1 前言 77
6.2 同相供電方法之應用設計方法論 78
6.3 重要負載不會完全斷電之切換技術 79
6.4 電力公司電力供應不足時同相供電模式之應用範例(一) 80
6.5 電力公司電力供應不足時同相供電模式之應用範例(二) 81
6.6 電力公司停電時之同相供電模式應用範例(一) 82
6.7 電力公司停電時之同相供電模式應用範例(二) 82
6.8 本章小結 82
第七章 結論與未來研究方向 93
7.1 結論 93
7.2 未來研究方向 94
參考文獻 95
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