臺灣博碩士論文加值系統

現代的電力設備除了要求可靠性、安全性之外，尚須滿足多項要求，諸如構造應緊湊密實以縮小變電所之空間、操作者之安全保障、設備易於檢查維護、以及降低對環境的危害等，都是提供安全可靠的電力供應所必須考慮的課題。GIS設備外殼受內部導體電流感應所產生的循環電流相當大，若因設備接地不良或互連導體處理不當，會導致此循環電流透過大地回流到其它匯流排或控制箱導致設備的故障，甚至危害到設備維護人員的安全。本論文針對345kV氣封絕緣開關設備外殼及接地線內部導體電流感應所產生的循環電流特性進行分析，其中將考慮不同負載準位、供電方式、設備外殼材質及外殼接地方式做深入探討。文中首先應用電磁暫態分析程式之改良程式(ATP)建構模型，然後，分析不同負載分配方式在搭配不同接地方式下所得的各段GIS設備外殼電流值以及接地電流值；此外，藉由改變外殼材質所產生不同的感應環流值可評估電力消耗情況，最後根據這些分析結果以評估其影響，包括對人員及設備的影響，本研究相關分析所得之數據可作為進一步探討GIS供電方式及設備之設計和防護措施之參考。

The modern power equipments require not only reliability and security, but also many other requirements such as the conciseness of structures to minimize the size of substations, the security of operators, maintenance of equipments and that the threat to the environment must be reduced. These requirements are essential topics to be considered so as to provide safe and reliable electric power. The induced circulation current in the case of gas insulation switchgear (GIS) is quite large. If the equipment are not well grounded or the interconnected conductors are not well treated, this induced circulation current will flow, via the earth ground, to other buses or control panels and then lead to the faults of equipments and even pose threat to the maintainers of equipments.
This thesis is aimed to analyze the induced circulation current in the cases of 345kV GIS and ground wires. The analysis considers different load patterns, power supply structures, materials of GIS cases and the grounding types. The circuit model eased on the Alternative Transient Program (ATP) is first constructed. Secondly, this thesis analyzes the current in each section of GIS cases and ground wires at different load patterns with different grounding types are analyzed. Besides, the power consumption can be assessed on the basis of different induced circulation current, which can be obtained by changing the materials of GIS cases. Finally, based on these analysis results, this thesis assesses their influence on personnel and equipment. The data in this thesis can provide reference for further studying power supply scheme and design of GIS and protection strategies for GIS.

摘要 i
ABSTRACT ii
目錄 iii
表目錄 v
圖目錄 viii
第一章 緒論 1
1.1研究動機與目的 1
1.2相關研究概況 2
1.3研究內容概述 3
第二章 345kV GIS之組成及問題描述 4
2.1 345kV開關場系統介紹 4
2.2 345kV GIS之組成 7
2.3 GIS感應環流問題描述 11
第三章 模型之建立及參數計算 14
3.1 ATP電磁暫態分析軟體之介紹 14
3.1.1一般說明 14
3.1.2擴展ATP應用於GIS本體之描述 15
3.2 345kV之ATP模型 19
3.2.1接地架構描述 19
3.3系統參數之計算 25
3.3.1 電壓及電流源之計算 25
3.3.2 接地阻抗計算 26
3.3.3 GIS外殼自阻抗與互阻抗計算 28
第四章 實例分析及比較 30
4.1 GIS外殼多點三相共同接地之感應環流分析 31
4.2 GIS外殼多點三相各自接地之感應環流分析 45
4.3 GIS外殼雙邊三相各自接地之感應環流分析 59
4.4 GIS外殼雙邊三相共同接地之感應環流分析 73
4.5改變GIS外殼材質對感應環流之影響分析 87
4.6分析結果討論 87
第五章 感應環流影響評估 90
5.1電能損失及熱應力評估 90
5.2感應環流引起之雜散電流評估 91
5.3高壓電弧傷害之評估 92
第六章 結論與展望 93
6.1結論 93
6.2展望 93
參考文獻 94

[1] IEC60427, “Synthetic testing of high-voltage alternating current circuit-breakers,” Apr. 2000.
[2] IEC62271-100, “high-voltage alternating-current circuit-breakers,” May.2002.
[3] IEC60056：4th EDITION：1987, “High voltage alternating current circuit-breakers,” May.2001.
[4] S. Yamashita, N. Miyake, K. Suzuki ,H. Ikeda, S. Yanabu, “Short circuit Testing Method Of 3-Phase-In-One-Tank-Type SF6 Gas Circuit Breaker,” IEEE,1 January 1989.
[5] M.Yamamoto,S. Yamashita , H. Ikeda, and S. Yanabu, “New short circuit Testing Facilities to Cope with the Recent Development of GIS ,” IEEE Trans. On PAS,Vol PAS-104,No .1 ,1985.
[6] K.J.Froehlich, Schett, and D.S Johnson, “A New Three Phase Synthetic Test Circuit for HVAC Breakers of High Interrupting Power as Applied to a New 242KV SF6 Single Tank Breaker,” IEEE PES Winter Meeting,87 WM 119-1,1987.
[7] C.Guilloux,P.G. Scarpa, “Measurement Of The Post Arc Current Of Hv Circuit Breakers,” IEEE, 3 July 1993.
[8] B. Blez,C. Guilloux, “Post-arc current in high voltage SF6 circuit-breaker when breaking up to 63 KA,” IEEE Transactions on Power Delivery, Vol. 4, No 2, April 1989, PP. 1056-1062.
[9] ANSI/IEEE Std.80, “IEEE Guide for Safety in AC Substation Grounding,” IEEE Society, New York 2000.
[10] 臺灣電力公司，345kV氣體絕緣開關設備規範(EHV-GIS-1)，台北，2005年5月。
[11] 臺灣電力公司，臺灣電力股份有限公司輸電系統規劃準則，台北，2009年3月修訂。
[12] 陳登嘉，超高壓變電所氣封開關外殼電氣特性分析，崑山科技大學電機研究所碩士論文， 2007年6月。
[13] 周至如，工廠低壓主配電盤感應環流問題之檢討與改善，電機月刊，第15期5月號，2005，第198-207頁。
[14] John J. Grainger, William D. Stevenson, JR., “Power System Analysis,” pp.141-169, McGraw-Hill, 1994.
[15] Ueta G., Kaneko S., Okabe, S., “Evaluation of breakdown characteristics of gas insulated switchgears for non-standard lightning impulse waveforms - Breakdown characteristics in the presence of bias voltages under non-uniform electric field,” IEEE Transactions on Dielectrics and Electrical Insulation 16 (2), art. no. 4815190, pp. 543-551, 2009.
[16] Ametani, A., Goto, T., Yoshizaki, S., Omura, H., Motoyama, H., “Switching surge characteristics in gas-insulated substation,” 41st International Universities Power Engineering Conference, UPEC 2006, Conference Procedings 3, art. no. 4218826, pp. 941-945, 2006.
[17] Singha, S., Joy Thomas, M., “Very fast transient overvoltages in GIS with compressed SF6-N2 gas mixtures,” IEEE Transactions on Dielectrics and Electrical Insulation 8 (4), pp. 658-664, 2001.
[18] Okabe, S. , “Insulation characteristics of GIS spacer for very fast transient overvoltage,” IEEE Power Engineering Review 16 (1), pp. 50, 1996.
[19] Ding, C., Zheng, J.-Y., Xiang, L., “Lightning over-voltage at ends of inlet cable in 110 kV GIS substation,” Dianli Zidonghua Shebei / Electric Power Automation Equipment 27 (2), pp. 55-58, 2007.
[20] Okabe, S., Takami, J., Nojima, K., “Circuit models of gas insulated switchgear elements for electromagnetic wave leakage analysis,” IEEE Transactions on Dielectrics and Electrical Insulation 15 (5), art. no. 4656254, pp. 1439-1448. 2008.
[21] 周至如，161kV供電之高科技工廠接地問題檢討與改善對策，電機月刊 第11卷 第11期 2001年11月。
[22] 陳信凱，架空輸電系統之大地洩漏電流特性研究，中原大學電機研究所碩士論文，2000年6月。
[23] 張萬祥，大型科技廠低壓配電系統之地電流特性研究，中原大學電機研究所碩士論文， 2004年6月。

[24] 邱森福，大型科技廠特高壓及高壓配電系統之地電流特性研究，中原大學電機研究所碩士論文，2004年6月。
[25] 陳子立，超高壓變電所開關突波特性及其對接地系統之影響研究，中原大學電機研究所碩士論文， 2007年6月。
[26] 官軍偉，特高壓地下環路供電系統之諧波特性及其對電力品質及接地系統的影響，中原大學碩士論文，2006年6月。
[27] Kim, J.K., Hahn, S.C., Park, K.Y., Kim, H.K., Oh, Y.H., “Temperature rise prediction of EHV GIS bus bar by coupled magnetothermal finite element method ,” IEEE Transactions on Magnetics 41 (5), pp. 1636-1639, 2005.
[28] Ko, Chung-Duck, Girgis, Ramsis S., “Analysis of core-form transformer performance under the effects of geomagnetic ally induced currents,” Proceedings of the American Power Conference 54 (pt 2), pp. 1122-1125, 1992.
[29] ANSI/IEEE-Std.80-2000,IEEE Guide for Safety in AC Substation Grounding, the Substation Committee of the IEEE Power Engineering Society, New York,2000.
[30] IEEE Std.400-2002,IEEE Guide for Field Testing and Evaluation of the Insulation of Shielded PowerCable System, IEEE Society, 2002.
[31] IEEE Std.576, IEEE Recommended Practice for Installation , Termination and Testing of InsulatedPower Cable as used in Industrial and Commercial Applications, IEEE Society, by Apr 2001.
[32] Graphical Preprocessor to ATP-EMTP. Windows version,
http://www.ece.mtu.edu/atp/ATPDraw/ATPDraw.html, 2009.
[33] 李宛真，地下超高壓變電所接地系統之接地故障特性及其影響研究，碩士論文，國立台北科技大學電機工程學系，台北，2008。
[34] 中興電工機械股份有限公司345kVGIS 說明書，2002 年03 月
[35] 周至如，特高壓地下環路供電之接地故障潛在危機檢討評估，電機月刊，2004 年3 月號，第230-236頁。
[36] 顏世雄，接地工程講義，台北：全華科技圖書公司，2004。
[37] 劉茂宏，屋內式變電所接地電阻之量測與計算，碩士論文，國立雲林科技大學電機工程學系，斗六，2005。
[38] 中興電工345kV六氟化硫氣體絕緣開關設備說明書，台北，2007年07月。