第 5 章 結論與未來研究方向
5.1 結論
本計劃旨在探討輸電線路之三相電氣特性，包括暫態現象及穩態現象等，其 中暫態現象包括開關過電壓、慢速波前暫態過電壓、暫態突入電流及暫態恢復電 壓等；穩態現象包括三相線路於正常送電時產生之負序電流、於欠相服務時產生 之負序電流和開關暫態現象，及線路產生之負序電流對發電機最長運轉時間之影 響等。
本研究以 EMTP-APT 分析長達 58.9 公里之台澎海纜運轉時可能產生之暫態 現象，包括正常運轉之開關過電壓（SOV）、故障清除後之慢速波前暫態過電壓
（SFT）、加壓無載變壓器和並聯電抗器之暫態突入電流（TIC）及 de-energize 並聯電抗器之暫態恢復電壓（TRV）等。經分析結果，各種操作暫態過電壓、突 入電流等均能符合設備規範。本項研究除以 EMTP 對台澎海纜系統之各種暫態 現象作系列完整分析外，研究之結果對無台澎海纜系統運轉經驗之台電公司提供 豐富的運轉前所需之資訊，為日後實際設備運轉及維護之重要參考，並有利於其 他海底電纜相關計畫之推行。
由於核三廠每部發電機佔系統尖載從 11%降至 3%，台電有足夠的備轉容量 以維持核三廠一部機跳機後系統容量之需。核三廠 4 回 345-kV 引出線在 N-2 時，
仍有超過 100%之額外容量輸送電廠全部電力。有關核三廠在 N-2 情況時須降載 為 75%之限制建議可修改為：停用同鐵塔之引出線時，發電機可持續滿載運轉；
停用不同鐵塔引出線時，不可持續滿載運轉，建議降低發電機總出力至 I2,G 低 於警報值以下。在 N-3 時，僅一條引出線仍有足夠容量傳送核三廠 2 部發電機滿 載出力，然而無論核三 Limit 或 IEEE Standard，建議降低發電機總出力至 I2,G 低於警報值以下。同時，二回 345-kV 引出線在 N-2 時，仍有超過 100%額外容 量輸送電廠全部電力，故根據 IEEE Standard，核三廠 2 部發電機在 N-2 時仍可 滿載運轉，如此可將核三廠發電機之運轉效益及對系統之貢獻發揮至最高。本研 究之完成，除提出調整核三廠負序電流限制值之建議，以提供台電核三廠有關修 訂負序電流運轉要求及標準之參考外，並由於在不影響發電運轉及系統安全之前 提細，減少運轉限制，以增加電廠之經濟效益。
5.2 未來研究方向
台澎海底電纜開關暫態之研究中，海纜參數僅以分佈參數代表，相關單芯、
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行政院國家科學委員會補助國內專家學者出席國際學術會議報告 會議名稱：「 The ICROS-SICE International Joint Conference 2009 (ICCAS-SICE 2009)」
報告人：吳啟瑞教授
服務機構：國立台灣科技大學（電機系）
會議時間：自99年08月18日起至99年08月21日 地點： 日本福岡
會議主辦機構名稱：ICROS-SICE 一、簡介
本次會議為The Institute of Control, Robotics and Systems (ICROS) 與 The Society of Instrument and Control Engineers (SICE)聯合舉辦的 年度大會，IEEE與IEE Japan等為協辦單位。會議期間為八月十八日 至八月二十一日，發表論文篇數共一千三百餘篇，可說是很大型的國 際會議。與會者來自世界各大學、製造廠商、與研究機構之學者專家，
有最高級與最新進的文章與技術研討。演講論文依研究內容作區分，
每天分別在十九個討論室中進行。本屆大會特別在每天均安排不同 Tutorials Session討論目前相關領域最熱門的問題。此次會議中個人發 表了兩篇演講論文，題目是：Analysis of Power System QV Curve by Fuzzy Modeling，以及Extensive Power Factor Calculation Method Using FPGA Considering Power Quality Disturbance。大會要求發表人，須針 對發表內容做二十分鐘的口頭報告。在會中和前來與會的專家學者交 換一些研究心得及意見，對個人而言，真是獲益匪淺，不但能擴展自 己的視野，也讓自己學習到更多相關知識。
本次研討會在將電機、機械、電子、電力、資訊等領域的教授集 合討論，是很特別的方式，與會者來自世界各大學、製造廠商、與研 究機構之學者專家，有最高級與最新進的文章與技術研討。出席專家 約1000人，來自世界各國。
二、過程
The ICROS-SICE International Joint Conference 2009 (ICCAS-SICE 2009)研討會在日本福岡召開，該市是九州的最大都會，風光明媚，
街上擠滿行人，有上班族與觀光客。福岡市，一年四季氣候溫和，國
際機場竟然位在市內，是日本最方便的城市，有著許多日本文化古 蹟，自然景觀，溫泉、火山、主題樂園，觀光內容豐富。報告人的第一篇文章發表在 Control System 的 paper section 口頭
宣讀，很多人出席。所有文章如下：
1. 1A15-1 ``Output Feedback Stabilization of Linear Time-varying Uncertain Delay Systems,'' *Tomoaki Hashimoto (Shinshu University), Takashi Amemiya (Setsunan Univercity) 13:15
2. 1A15-2 ``Synthesis of a Robust H_infinity Controller for Dynamic Uncertain Nonlinear Systems with Time-Varying Delay,'' *Wudhichai Assawinchaichote (King Mongkut's Uni. of Tech. Thonburi) 13:35
3. 1A15-3 ``Time-delay Effects on Controllability in LTI Systems,'' Fong I Kong (National Taiwan University), *Shu A He (National Taiwan University) 13:55 4. 1A15-4 ``Controllability Issues of Discrete-time Linear Systems with a State
Time-delay,'' Fong I Kong (National Taiwan University), *Yuan M Liu (National Taiwan University) 14:15
5. 1A15-5 ``Distributed H-infinity Consensus Control for Networks of Multiple Agents with Linear Coupling Dynamics,'' *Yang Liu (Beihang University (BUAA)), Yingmin Jia (Beihang University), Junping Du (Beijing University of Posts and Telecommunications), Fashan Yu (Henan Polytechnic University) 14:35
6. 1A15-6 ``Analysis of Power System QV Curve by Fuzzy Modeling,'' Shu-Chen Wang (Taipei College of Maritime Technology), *Chi-Jui Wu (National Taiwan University of Science and Technology, TAIWAN), Pei-Hwa Huang (National
6. 1A15-6 ``Analysis of Power System QV Curve by Fuzzy Modeling,'' Shu-Chen Wang (Taipei College of Maritime Technology), *Chi-Jui Wu (National Taiwan University of Science and Technology, TAIWAN), Pei-Hwa Huang (National