Excitation Characteristics of Y/Δ Connected Power Transformer with DC Disturbance

被引：0
|
作者：
Pan C. [1 ]
Shi W. [1 ]
Jin M. [1 ]
Cai G. [1 ]
Li X. [2 ]
机构：
[1] Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education, Northeast Electric Power University, Jilin
[2] Jilin Institute of Measurement & Testing Technology, Jilin
来源：
Gaodianya Jishu/High Voltage Engineering | 2019年 / 45卷 / 04期
基金：
中国国家自然科学基金;
关键词：
AC/DC hybrid; DC disturbance; Excitation characteristics; Parameter identification; Transformer;
D O I：
10.13336/j.1003-6520.hve.20190329014
中图分类号：
学科分类号：
摘要：
In order to solve the biasing saturation problem of power transformer with Y/Δ wired under DC disturbance, the excitation parameters and variation characteristics of DC disturbance transformer are studied by combining a model simulation and experimental verification. Firstly, the excitation inductance and current are used as the key excitation parameters to characterize the single/three-phase transformer excitation characteristics under DC disturbance. Secondly, the intrinsic relationship between the key excitation parameters and excitation saturation characteristics is simulated based on the electromagnetic coupling principle when the transformer suffers from DC disturbance. Moreover, an AC/DC hybrid experiment platform of 220 V three-phase transformer is built, and the excitation parameters are identified by port measurement information and time domain difference principle. The relationship between the excitation parameters and excitation saturation characteristics is built. The simulation results are compared with the experimental data to verify the correctness and effectiveness of the proposed method. Finally, the DC disturbance excitation characteristics are further analyzed by field 10 kV transformer tests. The results show that when the DC disturbance ε exceeds a certain limit (ε≥2.0), it may lead to more serious biasing instability problem. High-voltage level power transformers should have the capacity to withstand DC disturbance. The conclusion will provide some ideas for the further study of DC disturbance suppression measures and protection strategies. © 2019, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
引用
收藏
页码：1153 / 1160
页数：7
相关论文
共 20 条
  • [1] Saburo T., Hayaki M., Tomova H., Et al., Imaging of magnetic nanoparticles using a second harmonic of magnetization with DC bias field, IEEE Transactions on Magnetics, 51, 2, pp. 1-4, (2015)
  • [2] Liu C., Huang C., Pan M., Et al., Optimal configuration of capacitor blocking devices for suppressing DC bias in transformers, High Voltage Engineering, 42, 7, pp. 2308-2314, (2016)
  • [3] Baodong B., Zhiwei C., Dezhi C., DC bias elimination and integrated magnetic technology in power transformer, IEEE Transactions on Magnetics, 51, 11, pp. 1-4, (2015)
  • [4] Chen G., Song J., Zhang L., Et al., Control strategy for eliminating DC magnetic flux in the injection transformer of a dynamic voltage restorer, Proceedings of the CSEE, 34, 28, pp. 138-143, (2014)
  • [5] Liu C., Wang X., Liu L., Et al., Calculation method of geomagnetically induced currents in the power grid considering the influence of the coast effect, Proceedings of the CSEE, 36, 22, pp. 6059-6066, (2016)
  • [6] Zou G., Yao H., He W., Et al., DC bias suppression of receiving-end power grid in ±800 kV Xiluodu-Zhexi UHVDC project, High Voltage Engineering, 42, 2, pp. 543-550, (2016)
  • [7] Chen Z., Bai B., Chen D., Et al., Research on the formation mechanism and suppression method of transformer DC bias, Transactions of China Electrotechnical Society, 30, 14, pp. 208-214, (2015)
  • [8] Sun J., Li J., Zhang S., Et al., Test and analy-sis on operating performance of transformer with single-phase three-limb core under DC bias, Power System Technology, 37, 7, pp. 2041-2046, (2013)
  • [9] Zhang L., Ruan L., Pan Z., Et al., Evaluation of DC bias restraint equipment application, Electric Power Automation Equipment, 33, 9, pp. 151-156, (2013)
  • [10] Suonan J., Zhang K., Zhang J., Et al., The adverse impacts on transformer protection performance by hybrid AC-DC transmission grid system and counter-measures, Automation of Electric Power Systems, 34, 3, pp. 101-106, (2010)
12