Time-varying Parameter Model of AC Electrical Arc Furnace for Power Quality Predictions and Analysis
Liao Yantao1, Hu Jun1, Zhang Hailong2, Wang Enrong1
1. College of Electrical and Automation Engineering, Nanjing Normal University, Nanjing 210042; 2. College of Physics and Technology, Nanjing Normal University, Nanjing 210023
Abstract：A novel time domain differential model is proposed for the AC EAF (Electrical Arc Furnace) based on the law of conservation of energy. The model is established with arc admittance as a state variable, and with arc current and arc length as the input. The relation between the parameters with arc length is derived from the formula of the arc length and voltage. The engineering estimation method of time-varying parameters are further realized. Moreover, the limited bandwidth random signal is added on the arc length, and actual working state was simulated. A real EAF is taken to simulate the dynamic characteristics as well as the grid voltage fluctuation and harmonic wave in melting and refining stages. The results coincide with the measured data so prove the validity and practicability of the model.
廖延涛, 胡骏, 张海龙, 王恩荣. 用于电能质量预测分析的交流电弧炉时变参数模型[J]. 电气技术, 2016, 17(3): 41-46.
Liao Yantao, Hu Jun, Zhang Hailong, Wang Enrong. Time-varying Parameter Model of AC Electrical Arc Furnace for Power Quality Predictions and Analysis. Electrical Engineering, 2016, 17(3): 41-46.
[1] 彭卉, 邹舒, 付永生, 等. 冲击负荷接入电网的电能质量分析与治理方案研究[J]. 电力系统保护与控制, 2014, 42(1): 54-61. [2] 金维刚, 刘会金, 李智敏, 等. 3种典型间谐波源的间谐波测量及结果分析[J]. 电力自动化设备, 2010, 30(12): 30-35. [3] 刘书铭, 李琼林, 陈栋新, 等. 中高压配电网非线性用户的电能质量特性研究[J]. 电力系统保护与控制, 2012, 40(15): 150-155. [4] 鞠平, 王耀, 项丽, 等. 考虑特殊负荷的宁夏电网负荷建模[J]. 电力自动化设备, 2012, 32(8): 1-4, 21. [5] 王育飞, 姜建国. 用于电能质量研究的新型交流电弧炉混沌模型[J]. 中国电机工程学报, 2008, 28(10): 106-110. [6] Alonso M P, Donsion M P. An improved time domain arc furnace model for harmonic analysis[J]. IEEE Transactions on Power Delivery, 2004, 19(1): 367-373. [7] Montanari G C, Loggini M, Cavallini A, et al. ARC-FURNACE MODEL FOR THE STUDY OF FLICKER COMPENSATION IN ELECTRICAL NETWORKS[J]. IEEE Transactions on Power Delivery, 1994, 9(4): 2026-2036. [8] Acha E, Semlyen A, Rajakovic N. A HARMONIC DOMAIN COMPUTATIONAL PACKAGE FOR NONLINEAR PROBLEMS AND ITS APPLICATION TO ELECTRIC-ARCS[J]. IEEE Transactions on Power Delivery, 1990, 5(3): 1390-1397. [9] 池伟, 张恺伦, 查蕾, 等. 基于能量平衡的电弧炉模型的仿真与参数辨识[J]. 机电工程, 2012, 29(4): 454-457. [10] 王晶, 束洪春, 林敏, 等. 用于动态电能质量分析的交流电弧炉的建模与仿真[J]. 电工技术学报, 2003, 18(3): 53-58. [11] Wang Yan, Mao Zhizhong, Tian Huixin, et al. Modeling of electrode system for three-phase electric arc furnace[J]. Journal of Central South University of Technology, 2010, 17(3): 560-565. [12] 刘小河, 赵刚, 于娟娟. 电弧炉非线性特性对供电网影响的仿真研究[J]. 中国电机工程学报, 2004, 24(6): 30-34. [13] 陈大宣, 余一平, 鞠平, 等. 基于时变电流注入方法的特殊电力负荷建模研究[J]. 电力自动化设备, 2014, 34(3): 120-124. [14] Chang Gw, Min-Fu S, Chen Yiying, et al. A hybrid wavelet transform and neural-network-based approach for modelling dynamic voltage-current characteristics of electric arc furnace[J]. IEEE Transactions on Power Delivery, 2014, 29(2): 815-824. [15] 王其平. 电器电弧理论[M]. 北京: 机械工业出版社, 1982. [16] 王丰华. 电弧炉建模研究及其应用[D]. 上海: 上海交通大学, 2006. [17] Paschkis, Persson. Industrial electric furnaces and appliances[M]. new york: interscience publishers, 1960. [18] (日) 南条敏夫, 李中祥. 炼钢电弧炉设备与高效益运行[M]. 北京: 冶金工业出版社, 2000. [19] Manchur G, Erven CC. Development of a model for predicting flicker from electric arc furnaces[J]. IEEE Transactions on Power Delivery, 1992, 7(1): 416-426. [20] 仝永博, 刘征, 罗玉镯, 等. 采用长弧操作的高阻抗电弧炉[J]. 冶金设备, 2014(6): 20-24.
2016, Vol. 17 
