本論文旨在應用改良型重力搜索演算法於超導電纜最佳佈設問題之研究，此方法乃模擬物體間相互吸引力，產生加速度而移動之過程，進而可應用於求解最佳化問題。而由於超導電纜直接可由現有地下電纜管道汰換，不僅輸電損耗小，且可傳輸大容量電能，以滿足都會地區負載及減少興建輸電工程所遭遇之困難，惟需審慎考量佈設成本。故本文即致力將所提方法應用於超導電纜之佈設評估，期使兼顧輸電損耗及佈設成本，進而求得系統運轉之最大效益。此外為期加強演算法之尋優能力，本文輔以進化規劃法以鞏強重力搜索演算法之區域搜索效能，進而應用至超導電纜佈設之決策擬定，而經由系統測試比較可知，本文研究成果應可協助驗證所提方法於超導電纜規劃之應用可行性，兼以具備工程模擬評估之參考價值。

This thesis is aimed to propose an Improved Gravitational Search Algorithm (IGSA) to superconductor power cables placement. By mimicking the mutual attraction force among masses to generate the acceleration and the corresponding movement, this method is suitable to solve the problem considered. This research is considered since the superconductor power cables are not only easy to be replaced by the existent underground pipes, but also own a higher power transmission capacity with less power losses. However, by prudent consideration of superconductor power cables investment, this thesis is hence devoted to reaching the maximum performance while the transmission loss and the placement cost are both considered. In order to enhance the optimization capability of the algorithm, the IGSA method is meanwhile developed in the thesis by integration the evolutionary programming with the gravitational search algorithm, anticipating facilitating the decision-making of superconductor power cables placement. From the test results of different scenarios, they are beneficial to validate the feasibility of the proposed approach while demonstrating the reference values of engineering simulation assessment.

[1] A. P. Malozemoff, “The New Generation of Superconductor Equipment for the Electric Power Grid,” IEEE Transactions on Applied Superconductivity, Vol. 16, No. 1, pp. 54-58, March 2006.
[2] J. Howe, B. Kehrli, F. Schmidt, M. Gouge, S. Isojima, and D. Lindsay, “Very Low Impedance (VLI) Superconductor Cables: Concepts, Operation Implications and Financial Benefits,” Whitepaper, American Superconductor Corporation, November 2003.
[3] T. Masuda et al., “Design and Experimental Results for Albany HTS Cable,” IEEE Transactions on Applied Superconductivity, Vol. 15, No. 2, pp. 1806-1809, June 2005.
[4] H. Yumura et al., “Phase II of the Albany HTS Cable Project,” IEEE Transactions on Applied Superconductivity, Vol. 19, No. 3, pp. 1698-1701, June 2009.
[5] S. Eckroad, “Superconducting Power Cables：Technology Watch 2006-2009,” Electric Power Reasearch Institute, December 2006-2009.
[6] T. Masuda et al., “A New HTS Cable Project in Japan,” IEEE Transactions on Applied Superconductivity, Vol. 19, No. 3, pp. 1735-1739, June 2009.
[7] M. Tomita, M. Muralidhar, K. Suzuki, Y. Fukumoto, and A. Ishihara, “Development of 10 kA High Temperature Superconducting Power Cable for Railway Systems,” Journal of Applied Physics, DOI: 10.1063/1.3696975, March 2012.
[8] D. W. Kim et al., “Development of the 22.9-kV Class HTS Power Cable in LG Cable,” IEEE Transactions on Applied Superconductivity, Vol. 15, No. 2, pp. 1723-1726, June 2005.
[9] J. Y. Yoon, S. R. Lee, and J. Y. Kim, “Application Methodology for 22.9 kV HTS Cable in Metropolitan City of South Korea,” IEEE Transactions on Applied Superconductivity, Vol. 17, No. 2, pp. 1656-1659, June 2007.
[10] S. H. Sohn et al., “Design and Development of 500m Long HTS Cable System in the KEPCO Power Grid, Korea,” Physica C: Superconductivity and its Applications, Vol. 470, No. 20, pp. 1567-1571, November 2010.
[11] W. Prusseit, “Superconductor Industry in Germany: Status and Perspectives,” IEEE/CSC & ESAS Superconductivity News Forum, No. 4, April 2008.
[12] P. Tixador, “Development of Superconducting Power Devices in Europe,” Physica C: Superconductivity and its Applications, Vol. 470, No. 20, pp. 971-979, November 2010.
[13] L. Ren, Y. Tang, J. Shi, L. Li, J. Li, and S. Cheng, “Techno-Economic Feasibility Study on HTS Power Cables,” IEEE Transactions on Appiled Superconductivity, Vol. 19, No. 3, pp. 1774-1777, June 2009.
[14] D. Politano, M. Sjostrom, G. Schnyder, and J. Rhyner, “Technical and Economical Assessment of HTS Cables,” IEEE Transactions on Appiled Superconductivity, Vol. 11, No. 1, pp. 2477-2480, March 2001.
[15] E. Rashedi, H. Nezamabadi-pour, and S. Saryazdi, “GSA: A Gravitational Search Algorithm,” Information Sciences, Vol. 179, No. 13, pp. 2232-2248, June 2009.
[16] E. Rashedi and H. Nezamabadi-pour, “A Stochastic Gravitational Approach to Color Image Segmentation by Considering Spatial Information,” 1st International Conference on Communications Engineering, Iran, pp. 87-91, December 2010.
[17] S. Duman, Y. Sonmez, U. Guvenc, and N. Yorukeren, “Optimal Reactive Power Dispatch Using a Gravitational Search Algorithm,” IET Proceedings: Generation, Transmission and Distribution, Vol. 6, No. 6, pp. 563-576, June 2012.
[18] C. Li, and J. Zhou, “Parameters Identification of Hydraulic Turbine Governing System Using Improved Gravitational Search Algorithm,” Energy Conversion and Management, Vol. 52, No. 1, pp. 374-381, January 2011.
[19] O. Ceylan, A. Ozdemir, and H. Dag, “Gravitational Search Algorithm for Post-Outage Bus Voltage Magnitude Calculations,” 45th International Conference on Universities Power Engineering, Cardiff, UK, pp. 1-6, August-September 2010.
[20] HTS Triax: http://www.htstriax.com/
[21] J. F. Maguire, F. Schmidt, F. Hamber, and T. E. Welsh, “Development and Demonstration of a Long Length HTS Cable to Operate in the Long Island Power Authority Transmission Grid,” IEEE Transactions on Appiled Superconductivity, Vol. 15, No. 2, pp. 1787-1792, June 2005.
[22] J. F. Maguire, J. Yuan, W. Romanosky, F. Schmidt, R. Soika, S. Bratt, F. Durand, C. King, J. McNamara, and T. E. Welsh, “Progress and Status of a 2G HTS Power Cable to Be Installed in the Long Island Power Authority (LIPA) Grid,” IEEE Transactions on Appiled Superconductivity, Vol. 21, No. 3, pp. 961-966, June 2011.
[23] V. E. Sytnikov et al., “Cryogenic and Electrical Test Results of a 30 M HTS Power Cable,” IEEE/CSC & ESAS European Superconductivity News Forum (ESNF), No. 9, July 2009.
[24] J. A. Demko et al., “Triaxial HTS Cable for the AEP Bixby Project,” IEEE Transactions on Appiled Superconductivity, Vol. 17, No. 2, pp. 2047-2050, June 2007.
[25] H. S. Yang, D. L. Kim, D. H. Kim, W. M. Jung, S. Cho, H. S. Ryoo, and J. W. Cho, “Cryogenic Design of Termination Cryostat for HTS Power Cable,” IEEE Transactions on Appiled Superconductivity, Vol. 14, No. 2, pp. 1750-1753, June 2004.
[26] L. Ren, Y. Tang, J. Shi, and F. Jiao, “Design of a Termination for the HTS Power Cable,” IEEE Transactions on Appiled Superconductivity, DOI: 10.1109/TASC.2012.2191482, June 2012.
[27] Super Power: http://www.superpower-inc.com./
[28] 張憲章，「超導電電力傳輸技術」，電機月刊，第十九卷，第十一期：頁162-175, 2009年11月。
[29] A. Mansoldo, M. Nassi, and P. Ladie, “HTS Cable Application Studies and Technical/Economical Comparisons with Conventional Technologies,” IEEE Conference on Power Engineering Society Winter Meeting, New York, USA, Vol. 1, pp. 142-144, January 2002.
[30] 中華民國行政院經濟部能源局，「99年-108年長期負載預測與電源開發規劃摘要報告」，民國一百年。
[31] I. Y. Kim, and O. L. de Weck, “Adaptive Weighted Sum Method for Multiobjective Optimization,” 10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, New York, USA, August-September 2004.
[32] 台灣電力股份有限公司，「2011台灣電力公司永續報告書」，民國一百年。
[33] N. Sinha, R. Chakrabarti, and P. K. Chattopadhyay, “Evolutionary Programming Techniques for Economic Load Dispatch,” IEEE Transactions on Evolutionary Computation, Vol. 7, No. 1, pp. 83-94, February 2003.
[34] C.Y. Chung, C.H. Liang, K.P. Wong, and X.Z. Duan, “Hybrid Algorithm of Differential Evolution and Evolutionary Programming for Optimal Reactive Power Flow,” IET Proceedings: Generation, Transmission and Distribution, Vol. 4, No. 1, pp. 84-93, January 2010.
[35] H. Saadat, Power System Analysis, McGraw-Hill Company, 2nd edition, pp. 295-297, 2004.
[36] H. R. Baghaee, M. Jannati, B. Vahidi, S. H. Hosseinian, and S. Jazebi, “Optimal Multi-type FACTS Allocation Using Genetic Algorithm to Improve Power System Security,” 12th Power System Conference, Aswan, Egypt, pp. 162-166, March 2008.
[37] 周鵬程，「遺傳演算法原理與應用－活用Matlab」，全華科技圖書股份有限公司，民國九十一年。
[38] A. I. Selvakumar, and K. Thanushkodi, “A New Particle Swarm Optimization Solution to Nonconvex Economic Dispatch Problems,” IEEE Transactions on Power Systems, Vol. 22, No. 1, pp. 42-51, February 2007.
[39] 台灣電力股份有限公司綜合研究所，「超導體應用於地下輸電線路之可行性研究」，一百年度研究計畫，民國一百年。
[40] IEEE-30bus: http://www.ee.washington.edu/