Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Wind farm resonance characteristics analysis based on harmonic impedance measurement method

  • Yang, Yude (College of Electrical Engineering, Guangxi University) ;
  • Yuan, Lili (College of Electrical Engineering, Guangxi University) ;
  • Qin, Zhijun (College of Electrical Engineering, Guangxi University) ;
  • Liu, Hui (College of Electrical Engineering, Guangxi University)
  • Received : 2019.11.05
  • Accepted : 2020.03.13
  • Published : 2020.07.20
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Abstract

Recently, subsynchronous oscillation (SSO) has been captured in direct-drive permanent magnetic synchronous generator (PMSG) based wind farms in many areas without series compensation in nearby power grids. However, there are fewer reports related to this new type of SSO. In addition, an analysis of the new SSO based on existing methods is computationally cumbersome, and the control effect of the converter was generally simplified in previous studies, which lead to serious errors. This paper proposes a method for analyzing the resonance characteristics of wind farms based on impedance measurement to simplify calculations and improve accuracy. The correctness and effectiveness of the proposed method are validated through the IEEE first benchmark model. A time-domain simulation model of a direct-drive PMSG is established and analyzed by harmonic impedance measurement. The results show that SSO exists when direct-drive PMSGs are connected to a weak AC system. The converter of the direct-drive PMSG exhibits a small negative value at the oscillation mode frequency. This means that the converter behaves like a capacitor with negative impedance. The capacitive impedance of the converter forms a resonant loop with the inductance of the AC grid and causes unstable SSO.

Keywords

Acknowledgement

This research was supported by the National Natural Science Foundation of China under Grant 51767001.

References

  1. Chen, C., Du, W.J., Wang, H.F., Littler, T.: Sub-synchronous oscillations in power systems caused by grid-connected wind farms-a survey of mechanism studies. CSEE J. Power Energy Syst. 4(4), 495-503 (2018) https://doi.org/10.17775/CSEEJPES.2018.00560
  2. IEEE Subsynchronous Resonance Working Group: Terms, definitions and symbols for subsynchronous oscillations. IEEE Trans. Power Appar. Syst. PAS-104(6), 1326-1334 (1985) https://doi.org/10.1109/TPAS.1985.319152
  3. Li, P.H., Xiong, L.Y., Wang, J., Ma, M.L., Khan, M.W.: SSCI mitigation of series-compensated DFIG wind power plants with robust sliding mode controller using feedback linearization. J. Power Electron. 19(2), 569-579 (2019) https://doi.org/10.6113/JPE.2019.19.2.569
  4. Liang, X.D.: Emerging power quality challenges due to integration of renewable energy sources. IEEE Trans. Ind. Appl. 53(2), 855-866 (2017) https://doi.org/10.1109/TIA.2016.2626253
  5. Mitra, A., Chatterjee, D.: Active power control of DFIG-based wind farm for improvement of transient stability of power systems. IEEE Trans. Power Syst. 31(1), 82-93 (2016) https://doi.org/10.1109/TPWRS.2015.2397974
  6. Wang, Y., Meng, J., Zhang, X., Lie, X.: Control of PMSG-based wind turbines for system inertial response and power oscillation damping. IEEE Trans. Sustain. Energy 6(2), 565-574 (2015) https://doi.org/10.1109/TSTE.2015.2394363
  7. Luo, H., Lin, M.Y., Cao, Y., Guo, W., Hao, L., Wang, P.: A calculation method for the nonlinear crowbar circuit of DFIG wind generation based on frequency domain analysis. J. Power Electron. 16(5), 1884-1893 (2016) https://doi.org/10.6113/JPE.2016.16.5.1884
  8. Zhao, H.Y., Zheng, T., Li, Y., Du, J.F., Shi, P.: Control and analysis of Vienna rectifier used as the generator-side converter of PMSG-based wind power generation system. J. Power Electron. 17(1), 212-221 (2017)
  9. Liu, H.K., Xie, X.R., He, J.B., Xu, T., Wang, C., Zhang, C.Y.: Subsynchronous interaction between direct-drive PMSG based wind farms and weak AC networks. IEEE Trans. Power Syst. 32(6), 4708-4720 (2017) https://doi.org/10.1109/TPWRS.2017.2682197
  10. Fan, L., Miao, Z.: Mitigating SSR using DFIG-based wind generation. IEEE Trans. Sustain. Energy 3(3), 349-358 (2012) https://doi.org/10.1109/TSTE.2012.2185962
  11. Song, Y.P., Blaabjerg, F.: Overview of DFIG-based wind power system resonances under weak networks. IEEE Trans. Power Electron. 32(6), 4370-4394 (2017) https://doi.org/10.1109/TPEL.2016.2601643
  12. Huang, P.-H., Moursi, M., Xiao, W.D., Kirtlry, J.: Subsynchronous resonance mitigation for series-compensated DFIG-based wind farm by using two-degree-of-freedom control strategy. IEEE Trans. Power Syst. 30(3), 1442-1454 (2015) https://doi.org/10.1109/TPWRS.2014.2348175
  13. Ren, W., Larsen, E.: A refined frequency scan approach to subsynchronous control interaction (SSCI) study of wind farms. IEEE Trans. Power Syst. 31(5), 3904-3912 (2016) https://doi.org/10.1109/TPWRS.2015.2501543
  14. Liu, H.K., Xie, X.R., Zhang, C.Y., Li, Y., Liu, H., Hu, Y.H.: Quantitative SSR analysis of series-compensated DFIG-based wind farms using aggregated RLC circuit model. IEEE Trans. Power Syst. 32(1), 474-483 (2017) https://doi.org/10.1109/TPWRS.2016.2558840
  15. Peng, Y.J., Li, Y., Liu, F., Xu, Z.W., Cao, Y.J.: Frequency stabilization method for grid integration of large-scale centralized wind farm via VSC-HVDC technology. J. Power Electron. 18(2), 547-557 (2018) https://doi.org/10.6113/JPE.2018.18.2.547
  16. Shair, J., Xie, X.R., Wang, L.P., Liu, W., He, J.B., Liu, H.: Overview of emerging subsynchronous oscillations in practical wind power systems. Renew. Sustain. Energy Rev. 32, 159-168 (2019)
  17. Miao, Z.X.: Impedance-model-based SSR analysis for type 3 wind generator and series-compensated network. IEEE Trans. Energy Convers. 27(4), 984-991 (2012) https://doi.org/10.1109/TEC.2012.2211019
  18. Fan, L., Kavasseri, R., Miao, Z.L., Zhu, C.X.: Modeling of DFIG-based wind farms for SSR analysis. IEEE Trans. Power Del. 25(4), 2073-2082 (2010) https://doi.org/10.1109/TPWRD.2010.2050912
  19. Xie, X.R., Zhang, X., Liu, H.K., Liu, H., Li, Y.H., Zhang, C.Y.: Characteristic analysis of subsynchronous resonance in practical wind farms connected to series-compensated transmissions. IEEE Trans. Energy Convers. 32(3), 1117-1126 (2017) https://doi.org/10.1109/TEC.2017.2676024
  20. Wen, B., Boroyevich, D., Burgos, R., Mattavwlli, P., Shen, Z.Y.: Analysis of D-Q small-signal impedance of grid-tied inverters. IEEE Trans. Power Electron. 31(1), 675-687 (2016) https://doi.org/10.1109/TPEL.2015.2398192
  21. Wang, X., Blaabjerg, F., Liserre, M., Chen, Z., He, J.W., Li, Y.W.: An active damper for stabilizing power-electronics-based AC system. IEEE Trans. Power Electron. 29(7), 3318-3329 (2014) https://doi.org/10.1109/TPEL.2013.2278716
  22. Liu, Z., Liu, J., Bao, W., Zhao, Y.: Infinity-norm of impedance-based stability criterion for three-phase AC distributed power systems with constant power loads. IEEE Trans. Power Electron. 30(6), 3030-3043 (2015) https://doi.org/10.1109/TPEL.2014.2331419
  23. Bi, T.S., Li, J.Y., Zhang, P., Mitchell-Colgan, E., Xiao, S.W.: Study on response characteristics of grid-side converter controller of PMSG to sub-synchronous frequency component. IET Renew. Power Gener. 11(7), 966-972 (2017) https://doi.org/10.1049/iet-rpg.2016.0994
  24. Chae, B., Suh, Y., Kang, T.: Three-phase three switch buck-type rectifier based on current source converter for 5 MW PMSG wind turbines systems. J. Power Electron. 18(5), 1501-1512 (2018) https://doi.org/10.6113/JPE.2018.18.5.1501
  25. Xu, Y.H., Cao, Y.P.: Sub-synchronous oscillation in PMSGs based wind farms caused by amplification effect of GSC controller and PLL to harmonics. IET Renew. Power Gener. 12(7), 844-850 (2018) https://doi.org/10.1049/iet-rpg.2017.0740