An Improved Jiles-Atherton Model for DC Bias of Transformer

被引：0
|
作者：
Tantai L. [1 ]
Han X. [1 ]
Wang L. [1 ]
Yuan T. [2 ]
机构：
[1] Shanxi Key Lab of Power System Operation and Control, Taiyuan University of Technology, Taiyuan, 030024, Shanxi Province
[2] College of Electrical Engineering, Dalian University of Technology, Dalian, 116024, Liaoning Province
来源：
Dianwang Jishu/Power System Technology | 2020年 / 44卷 / 01期
关键词：
DC bias magnetism; Hysteresis curve; Improved model; J-A theory; Modeling;
D O I：
10.13335/j.1000-3673.pst.2019.0940
中图分类号：
学科分类号：
摘要：
Jiles-Atherton (J-A) theory is widely used in the field of semi-macro hysteresis modeling. Because of existence of AC component and the incomplete description of the hysteresis curve in bias state, there is a large error in the DC bias model of transformer. In this paper, the J-A formula under normal excitation state is modified. On this basis, by introducing DC component, non-hysteresis magnetization curve and the differential expression of magnetization in DC bias state of J-A theory are improved, and pinning coefficient k is corrected. Then, a DC bias model of transformer based on the improved J-A formula is proposed. Finally, an example transformer in a 500kV grid is used to verify accuracy of the improved J-A equation for DC biasing of transformer. It is verified that the error between the modified model simulation result and the measured data is smaller. Under the premise of not changing original J-A theoretical physical mechanism, the improved model can obtain asymmetric hysteresis curve in bias state and describe excitation current value more accurately. © 2020, Power System Technology Press. All right reserved.
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页码：122 / 131
页数：9
相关论文
共 25 条
  • [1] Cai M., Li J., Peng Q., Et al., Research and processing of main transformer DC bias in urban areas, Electrical Automation, 39, 1, pp. 7-15, (2017)
  • [2] Li J., Li J., Zhang S., Topology-correct duality-based transformer transient model and its application in DC bias assessment, Power System Technology, (2019)
  • [3] Peng P., Zhou W., Xie Y., Et al., Analysis and research on DC bias of transformer caused by metro stray current, Transformer, 54, 11, pp. 26-30, (2017)
  • [4] Bai B., Zhao X., Chen D., Et al., Simulation and experimental study of transformer excitation current under DC bias conditions based on J-A model, Transactions of China Electrotechnical Society, 28, pp. 162-166, (2013)
  • [5] Jiles D.C., Atherton D.L., Theory of ferromagnetic hysteresis, Journal of Applied Physics, 55, 6, pp. 2115-2120, (1984)
  • [6] Li X., Wen X., Chen C., Simulation analysis of DC bias excitation current of single-phase transformer, High Voltage Engineering, 31, 9, pp. 8-10, (2005)
  • [7] Zhao Z., Cheng Z., Liu F., Et al., Simulation of DC bias magnetic stray loss characteristics of magnetically permeable plate based on leakage flux compensation, Transactions of China Electrotechnical Society, 30, 8, pp. 38-44, (2015)
  • [8] Li Z., Li Q., Li C., Et al., Research on the challenge and modification method of J-A magnetization modeling theory, Proceedings of the CSEE, 31, 3, pp. 124-131, (2011)
  • [9] Li C., Liu Y., Jiles-Atherton modified model of magnetization characteristics of transformer core under DC bias conditions, Transactions of China Electrotechnical Society, 32, 19, pp. 193-201, (2017)
  • [10] Wang F., Geng C., Su L., Parameter identification and prediction of Jiles-Atherton model for DC-biased transformer using improved shuffled frog leaping algorithm and least square support vector machine, IET Electric Power Applications, 9, 9, pp. 660-669, (2015)
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