An Enhanced Rotor Side Converter Control of DFIG-Based Wind Turbines for Improving LVRT Capability During Balanced Grid Faults
محورهای موضوعی : کاربرد محاسبات نرم در علوم مهندسی
1 - Department of Electrical Engineering, Lenjan Branch, Islamic Azad University, Isfahan, Iran
کلید واژه: Demagnetization control method, DFIG, LVRT, Balanced three-phase fault,
چکیده مقاله :
Among variable speed wind turbines the use of doubly-fed induction generator based wind turbines are very common. However, due to their stator direct connection to the grid, they are very sensitive to grid faults. This paper analyzes the low voltage ride-through (LVRT) capability enhancement under the three-phase balanced grid fault. Therefore the variations of 5 parameters during balanced grid fault are Analyzed. These parameters are stator voltage, rotor current, stator current, rotor speed, and the DC link voltage. To improve the LVRT capability an enhanced demagnetization control method is proposed. This method shortens the natural stator current time constant and approximately immunes the system against parameter variations as shown in simulation results. To show the effectiveness of the proposed method, the results are compared with one of the best previous demagnetization control methods.
Among variable speed wind turbines the use of doubly-fed induction generator based wind turbines are very common. However, due to their stator direct connection to the grid, they are very sensitive to grid faults. This paper analyzes the low voltage ride-through (LVRT) capability enhancement under the three-phase balanced grid fault. Therefore the variations of 5 parameters during balanced grid fault are Analyzed. These parameters are stator voltage, rotor current, stator current, rotor speed, and the DC link voltage. To improve the LVRT capability an enhanced demagnetization control method is proposed. This method shortens the natural stator current time constant and approximately immunes the system against parameter variations as shown in simulation results. To show the effectiveness of the proposed method, the results are compared with one of the best previous demagnetization control methods.
[1] A. H. Kasem, E. F. El-Saadany, H. H. El-Tamaly, and M. A. A. Wahab, “A new fault ride-through strategy for doubly-fed wind-power induction generator,” in Proc. IEEE Elect. Power Conf., Canada, 2007, pp. 1–7.
[2] J. Lopez, E. Guba, P. Sanchis, E. Olea, J. Ruiz, and L. Marroyo, “Ride through of wind turbines with doubly-fed induction generator under symmetrical voltage dips,” IEEE Trans. Ind. Electron., vol. 56, no. 10, pp. 4246–4254, Oct. 2009.
[3] P. S. Flannery and G. Venkataramanan, “Fault-tolerant doubly-fed induction generator wind turbine using a parallel grid side rectifier and series grid side converter,” IEEE Trans. Power Electron., vol. 23, no. 3, pp. 1126–1135, May 2008.
[4] Grid Code, High and Extra High Voltage, E.ON Netz GmbH, Bayreuth, Germany, Apr. 2006. [Online]. Available: http://www.eon-netz.com
[5] W. Weisheng, C. Yongning, W. Zhen, et al., “On the Road to Wind Power: China’s Experience at Managing Disturbances with High Penetrations of Wind Generation,” IEEE Power Energy Mag., vol. 14, no. 6, pp. 24–34, Nov. 2016.
[6] G. Pannell, D.J. Atkinson and B. Zahawi, “Minim um-threshold crowbar for a fault-ride-through grid-code-compliant DFI G wind turbine”, IEEE Trans. on Energy Conversion, vol. 25, no. 2, pp. 750-759. Sept. 2010.
[7] Q. Wei, G. K. Venayagamorthy and R. G. Harley, “Real-time implementation of a STATCOM on a wind farm equipped with doubly fed induction generators,” IEEE Trans. Ind. Appl., vol. 45, no. 1, pp. 98– 107, Jan. 2009.
[8] P. S. Flannery and G. Venkataramanan, “A fault-tolerant doubly-fed induction generator wind turbine using a parallel grid side rectifier and series grid side converter,” IEEE Trans. Power Electron., vol. 23, no. 3, pp. 1126–1135, May 2008.
[9] P. S. Flannery and G. Venkataramanan. “Unbalanced voltage sag ride-through of a doubly-fed induction generator wind turbine with series grid-side converter,” IEEE Trans. Ind. Appl., vol. 45, no. 5, pp. 1879-1887, Sept. 2009.
[10] O. Abdel-Baqi and A. Nasiri, “ A Dynamic LVRT Solution for Doubly Fed Induction Generators”, IEEE Trans. Power Electro., vol. 25, no. 1, pp.193-196, Jan. 2010.
[11] C. Wessels, F. Gebhardt and F. W. Fuchs, “Fault ride-through of a DFIG wind turbine using a dynamic voltage restorer during symmetrical and asymmetrical grid faults”, IEEE Trans. on Power Electro., vol. 26, no. 3, pp. 807-815, March 2011.
[12] W. Guo, L. Xiao and S. Dai, “Enhancing low-voltage ride-through capability and smoothing output power of DFIG with a superconducting fault-current limiter–magnetic energy storage system”, IEEE Trans. on Energy Convers., vol. 27, no.2, pp. 277-295, June 2012.
[13] X. Yan, G. Venkataramanan, P. S. Flannery, Y. Wang, Q. Dong and B. Zhang, “Voltage-sag tolerance of DFIG wind turbine with a series grid side passive-impedance network”, IEEE Trans. on Energy Convers., vol. 25, no. 4, pp. 1048-1056, Dec. 2010.
[14] J. Yang, J. E. Fletcher and J. O’Reilly, “A series-dynamic-resistor-based converter protection scheme for doubly-fed induction generator during various fault conditions,” IEEE Trans. Energy Con vers., vol. 25, no. 2, pp. 422–432, Jun. 2010.
[15] L. Zhou, J. Liu, Y. Zhu and S. Zhou, “A Series Reactor Based Converter Protection Scheme of Doubly Fed Induction Generator for Low Voltage Ride Through”, IEEE Energy Conversion Congress and Exposition (ECCE), Raleigh, USA, pp. 2404-2409, Sept 2012.
[16] J. Liang, W. Qiao, and R. G. Harley, “Feed-Forward Transient Current Control for Low-Voltage Ride-Through Enhancement of DFIG Wind Turbines,” IEEE Trans. Energy Convers., vol. 25, no. 3, pp. 836–843, 2010.
[17] J. Liang, D. F. Howard, J. A. Restrepo, and R. G. Harley, “Feedforward Transient Compensation Control for DFIG Wind Turbines During Both Balanced and Unbalanced Grid Disturbances,” IEEE Trans. Ind. Appl., vol. 49, no. 3, pp. 1452–1463, 2013.
[18] D. Xiang, L. Ran, P. J. Tavner, and S. Yang, “Control of a doubly-fed induction generator in a wind turbine during grid fault ride-through,” IEEE Trans. Energy Convers., vol. 21, no. 3, pp. 652–662, 2006.
[19] J. Lopez, P. Sanchis, E. Gubia, A. Ursua, L. Marroyo, and X. Roboam, “Control of Doubly Fed Induction Generator under symmetrical voltage dips,” in 2008 IEEE International Symposium on Industrial Electronics, 2008, pp. 2456–2462.
[20] J. Lopez, E. Gubia, E. Olea, J. Ruiz, and L. Marroyo, “Ride through of wind turbines with doubly-fed induction generator under symmetrical voltage dips,” IEEE Trans. Ind. Electron., vol. 56, no. 10, pp. 4246–4254, 2009.
[21] S. Hu, X. Lin, Y. Kang, and X. Zou, “An Improved Low-Voltage Ride-Through Control Strategy of Doubly Fed Induction Generator During Grid Faults,” IEEE Trans. Power Electron., vol. 26, no. 12, pp. 3653–3665, 2011.
[22] M. K. Döşoğlu, U. Güvenç, Y. Sönmez, and C. Yılmaz, “Enhancement of demagnetization control for low-voltage ride-through capability in DFIG-based wind farm,” Electr. Eng., vol. 100, no. 2, pp. 491–498, 2018.
[23] L. Yang, Z. Xu, J. Ostergaard, Z. Y. Dong, and K. P. Wong, “Advanced control strategy of DFIG wind turbines for power system fault ride through,” IEEE Trans. Power Syst., vol. 27, no. 2, pp. 713–722, 2012.
[24] H. P. Darji, C. R. Mehta, and T. K. Tailor, “Comparative Analysis of Fault Current Limiters With and Without Shunt Path for LVRT Improvement of Grid Connected Wind Turbine Generator,” in 2023 IEEE Renewable Energy and Sustainable E-Mobility Conference (RESEM), 2023, pp. 1–6. doi: 10.1109/RESEM57584.2023.10236258.
[25] B. Zhai, G. Chen, S. Alimasibieke, S. Liang, Z. Cao, and B. Gao, “Low Voltage Ride Through Method for Wind Turbines Based on Cooperative Control Strategy of Multiple Reactive Power Sources,” in 2022 IEEE Sustainable Power and Energy Conference (iSPEC), 2022, pp. 1–6. doi: 10.1109/iSPEC54162.2022.10033017.
[26] D. Yazdani, M. Mojiri, A. Bakhshai, and G. Joos, “A fast and accurate synchronization technique for extraction of symmetrical components” IEEE Trans. Power Electron., vol. 24, no. 3, pp. 674–684, Mar. 2009.
[27] H. Rahimi Esfahani, A. Ketabi, H.R. mohammadi, and M. Rahimi, “ Using VBR Model in Fixed Speed Wind Turbines and Suggesting a New Method for Improving LVRT Capability” Computational Intelligence in Electrical Engineering., vol. 10, no. 1, pp 51–62, Mar. 2019.
