ارزیابی اقتصادی یک شبکه مستقل با کنترل داخلی شامل منابع انرژی پراکنده
محورهای موضوعی : مهندسی برق و کامپیوترمحمدحسن مرادی 1 * , علی خندانی 2
1 - دانشگاه بوعلی سینا همدان
2 - دانشگاه سمنان
کلید واژه: مدیریت انرژی قابلیت اطمینان مباحث اقتصادی تولیدات پراکنده,
چکیده مقاله :
در اين مقاله 4 سناريوی تأمين انرژي مصرف‌كنندگان با استفاده از تابع هدف پیشنهادی با هم مقايسه گردیده و مناسب‌ترین روش تأمین انرژی مشخص شده است. 4 سناريوی تأمین انرژی عبارتند از: تأمين انرژي تنها به‌وسيله شبكه، شبكه و منابع توليد پراكنده، ريزشبكه به تنهايي و ريزشبكه متصل به شبكه بالادست. اين سناريوهاي تأمين انرژي در قالب دو حالت، بارها بر روي يك فيدر و بارها بر روي فيدرهاي مجزا محاسبه و با هم مقايسه مي‌شوند. تابع هدف پيشنهادي برای هر کدام از سناریوها داراي دو بعد اقتصادي و قابليت اطمينان است. بعد اقتصادي شامل هزينه ثابت و هزینه جاري تأمين انرژي و بعد قابليت اطمينان شامل انرژي تأمين‌نشده مصرف‌كنندگان مي‌باشد كه پس از تبديل تابع هدف به يك بعد با استفاده از برنامه‌ريزي خطي حل مي‌شود. روش پيشنهادي در اين مقاله با روش مشابه مقايسه شده كه نتايج نشان از كارآمدبودن و كاربردي‌تر بودن روش فوق دارد.
In this paper, four scenarios of energy supply for consumers are compared using the proposed objective function and the most appropriate energy methods have been identified. Four energy scenarios are: energy only by the network, the networks and distributed resources, micro-grid systems only and micro grid connected to the upstream network. The objective function for these energy scenarios are calculated and compared for two different load connections, all loads on one feeder and each load on individual feeders. Proposed objective function for each scenario consists of two dimensions, cost and reliability. Cost dimension includes constant cost, current cost and reliability dimension includes non delivered energy for consumers. After conversion into one dimension, the objective function is solved using linear programming. The proposed method in this paper compared with similar methods and these results demonstrate that the method in this paper is more efficient and practical.
[1] A. D. Hawkes and M. A. Leach, "Modelling high level system design and unit commitment for a microgrid," Applied Energy, vol. 86, no. 7-8, pp. 1253-1265, Jul. 2009.
[2] H. Morais, P. Kadar, P. Faria, Z. A. Vale, and H. M. Khodr, "Optimal scheduling of a renewable micro - grid in an isolated load area using mixed - integer linear programming," Renewable Energy, vol. 35, no. 1, pp. 151-156, Jan. 2010.
[3] F. A. Mohamed and H. N. Koivo, "MicroGrid Online Management and Balancing Using Multiobjective Optimization," in Proc. IEEE Lausanne Power Tech., pp. 639-644, 1-5 Jul. 2007.
[4] P. Moises Costa and M. A. Matos, "Assessing the contribution of microgrids to the reliability of distribution networks," Electric Power Systems Research, vol. 79, no. 2, pp. 382-389, 2009.
[5] P. Moises Costa and M. A. Matos, "Economic analysis of microgrids including reliability aspects," in Proc. 9th Int. Conf. on Probabilistic Methods Applied to Power Systems, 8 pp., Stockholm, Sweden, Jun. 2006.
[6] C. Marnay, "Microgrids and heterogeneous power quality and reliability," Int. J. of Distributed Energy Resources, vol. 4, no. 4, pp. 281-295, Oct. 2008.
[7] J. Rocabert, et al., "Microgrid connection management based on an intelligent connection agent," in Proc. IEEE 36th Industrial Electronics Society Annual Conf., IECON'10, pp. 3028-3033, 7-10 Nov. 2010.
[8] T. Loix, T. Wijnhoven, and G. Deconinck, "Protection of microgrids with a high penetration of inverter - coupled energy sources," in Proc. IEEE PES/CIGRE Joint Symp. Integration of Wide-Scale Renewable Resources Into the Power Delivery System, 6 pp., Canada, 29-31 Jul. 2009.
[9] E. Serban and H. Serban, "A control strategy for a distributed power generation microgrid application with voltage and current controlled source converter," IEEE Trans on Power Electronics, vol. 25, no. 12, pp. 2981-2992, Dec. 2010.
[10] R. Majumder, A. Ghosh, G. Ledwich, and F. Zare, "Power management and power flow control with back - to - back converters in a utility connected microgrid," IEEE Trans. on Power Systems, vol. 25, no. 2, pp. 821-834, May 2010.
[11] N. Amjady, F. Keynia, and H. Zareipour, "Short-term load forecast of microgrids by a new bilevel prediction strategy," IEEE Trans. on Smart Grid, vol. 1, no. 3, pp. 286-294, Dec. 2010.
[12] Y. Zoka, A. Sugimoto, N. Yorino, K. Kawahara, and J. Kubokawa, "An economic evaluation for an autonomous independent network of distributed energy resources," Electric Power Systems Research, vol. 77, no. 7, pp. 831-838, May 2007.
[13] M. Meiqin, J. Meihong, D. Wei, and L. Chang, "Multi-objective economic dispatch model for a microgrid considering reliability," in Proc. 2nd IEEE Int. Symp. on Power Electronics for Distributed Generation Systems, pp. 993-998, 16-18 Jun. 2010.
[14] P. Wang and R. Billinton, "Reliability cost/worth assessment of distribution systems incorporating time - varying weather conditions and restoration resources," IEEE Trans. on Power Delivery, vol. 17, no. 1, pp. 260-265, Jan. 2002.