شبيه‌سازي ديناميکي فليکر ناشي از کوره‌هاي قوس الکتريکي
محورهای موضوعی : مهندسی برق و کامپیوترساناز مسچی 1 * , مسعود علي‌اکبر گلکار 2 , احسان هاشم‌زاده 3
1 - شرکت مدیریت شبکه برق ایران
2 - دانشگاه صنعتی خواجه نصیرالدین طوسی
3 - دانشگاه فردوسی مشهد
کلید واژه: شبیه‌سازیفليکرکوره قوس الکتريکيهارمونيک,
چکیده مقاله :
فليکر ولتاژ و هارمونيک‌ها مشکلات کيفيت توان هستند که توسط کوره‌هاي قوس الکتريکي به سيستم قدرت تحميل مي‌شوند. براي مطالعه دقيق کوره‌ها و پيداکردن راه حل مقابله با اثرات منفي آنها احتياج به يک مدل مناسب از رفتار ديناميکي کوره‌ها داريم. در اين مقاله ابتدا به بررسي مدل‌هاي مختلف کوره‌هاي قوس الکتريکي که به‌صورت جامع در اکثر مقالات آمده، پرداخته می‌شود. سپس با توسعه ديناميکي مدل‌ها و به‌دست آوردن مشخصه ديناميکي آنها فليکر ناشي از مدل‌هاي مختلف، تحت شرايط يکسان شبيه‌سازي و با مقايسه و تحليل نتايج، مدل مناسب و دقيق‌تر معرفي مي‌شود. در انتها روش جديدي براي مدل‌سازي فليکر توليدي کوره بر مبناي مدولاسيون طول قوس فعال در طي فرآيند ذوب پيشنهاد مي‌گردد.
Voltage flicker and harmonics are the power quality problems which are introduced to the power system as a result of behavior of the arc furnace operation. To analyze harmonic and flicker generated by an arc furnace, accurate arc furnace models are needed. In this paper, different arc furnace models with different level of complexity are reviewed. In the first part of this paper a new developed time domain static model based on a piece-wise linear approximation of the V-I characteristics of the arc furnace is presented. In the second part of the paper, dynamic model for an arc furnace using MATLAB (Simulink) is presented. In addition to this, the novelty of this simulation technique lies in the fact that the variation of power transmitted to the load by the arc furnace during the cycle of operation is considered, thus making the proposed model more accurate and dependent on the operating conditions of the load. Finally recommendations are made for the application of some of these models and the accuracy of the presented model to other models from the practical point of view by using MATLAB is shown.
[1] T. Zheng, E. B. Makram, and A. A. Girgis, "Effect of different arc furnace models on voltage distortion," in Proc. 8th Int. Conf. on Harmonics and Quality of Power, vol. 2, pp. 1079-1085, 14-18 Oct. 1998.
[2] W. Ting, S. Wennan, and Z. Yao, "A new frequency domain method for the harmonic analysis of power system with arc furnace," in Proc. of the 4th Int. Conf. on Advances in Power System Control, vol. 2, pp. 552-555, 11-14 Nov. 1997
[3] O. Ozgun and A. Abur, "Development of an arc furnace model for power quality studies," in Proc. IEEE Power Engineering Society Summer Meeting, vol. 1, pp. 507-511, 18-22 Jul. 1999.
[4] O. Ozgun and A. Abur, "Flicker study using a novel arc furnace model," IEEE Trans on Power Delivery, vol. 17, no. 4, pp. 1158-1163, Oct. 2002.
[5] S. Varadan, E. B. Makram, and A. A. Girgis, "A new time domain voltage source model for an arc furnace using EMTP," IEEE Trans. on Power Del., vol. 11, no. 3, pp. 1685-1691, Jul. 1996.
[6] C. Sharmeela, G. Uma, M. R. Mohan, and K. Karthikeyan, "Voltage flicker analysis and mitigation case study in ac electric arc furnace using PSCAD/EMTDC," in Proc. Int. Conf. on Power System Technology, vol. 1, pp. 707-712, 21-24 Nov. 2004.
[7] T. Zheng and E. B. Makram, "An adaptive arc furnace model," IEEE Trans. on Power Delivery, vol. 15, no. 3, pp. 931-939, Jul. 2000.
[8] G. C. Montanari, M. Loggini, L. Pitti, E. Tironi, and D. Aninelli, "The effects of series inductors for flicker reduction in electric power system supplying arc furnaces," in Proc. IEEE Industry Applications Society Annual Meeting, vol. 2, pp. 1496-1503, 2-8 Oct. 1993.
[9] G. C. Maontanari, M. Loggini, A. Carallini, and L. Pitti, "Flicker and distortion compensation in electrical plants supplying arc furnace," in Proc. IEEE Industry Applications Society Annual Meeting, vol. 3, pp. 2249-2255, 2-6 Oct. 1994.
[10] G. C. Maontanari, M. Loggini, A. Carallini, L. Pitti, and D. Zaninelli, "Arc-furnace model for the study of flicker compensation in electrical networks," IEEE Trans. on Power Delivery, vol. 9, no. 4, pp. 2026-2036, Oct. 1994.
[11] L. Tang, Sh. Kolluri, and M. F. McGranaghan, "Voltage flicker prediction for two simultaneously operated ac arc furnaces," IEEE Trans. on Power Delivery, vol. 12, no. 2, pp. 255-262, Apr. 1997.
[12] B. Blazic and I. Papic, "Analysis of flicker mitigation in a utility distribution network," in Proc. IEEE Region 8 EUROCON 2003, vol. 2, pp. 292-296, 2003.
[13] S. R. Mendis, M. T. Bishop, and J. F. Witte, "Investigation of voltage flicker in electric arc furnace power system," IEEE Industry Application Mag., vol. 2, no. 1, pp. 28-34, Jan./Feb. 1996.
[14] د. جلالي و ا. ح. حاجي ميرآقا ، "ارزيابي فليکر ناشي از کارخانه فولاد آلياژي ايران واقع در استان يزد قسمت اول: مفاهيم اوليه و استانداردها،" برق، شماره 26، صص. 16-1.