Impact of DFIG-based wind farm integration on sub-synchronous torsional interaction between HVDC and thermal generators

Impact of DFIG-based wind farm integration on sub-synchronous torsional interaction between HVDC and thermal generators

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In western China, large-scale wind power is generally bundled with thermal power, and transmitted to eastern China by high-voltage direct current (HVDC) systems. This constitutes the wind–thermal bundled system transmitted by HVDC (WTBH). In this study, a typical studied system of WTBH is presented, and its models for eigenvalue analysis are introduced. To improve the efficiency of eigenvalue analysis, an improved block modelling method is proposed for building the state-space model of WTBH. By eigenvalue analysis and electromagnetic transient (EMT) simulation, the impact of doubly-fed induction generator (DFIG)-based wind farm integration on sub-synchronous torsional interaction (SSTI) between thermal generators (TGs) and HVDC was investigated. The sensitivity of the operating parameters of DFIG-based wind farms was analysed, including wind speed, wind farm scale, and distance between the wind farm and HVDC rectifier station. The obtained results show that the integration of DFIG-based wind farms can mitigate the SSTI between the TG and HVDC. The system becomes more stable as the wind speed and wind farm scale increase or the distance between the wind farm and HVDC rectifier station decreases. The conclusions of this study are validated through EMT simulations in PSCAD/EMTDC, and provide theoretical reference for practical WTBH projects.


    1. 1)
      • 1. Liu, Z., Zhang, Q.: ‘Study on the development mode of national grid of China’, Proc. CSEE, 2013, 33, (7), pp. 110.
    2. 2)
      • 2. Mokhtari, M., Khazaei, J., Nazarpour, D.: ‘Sub-synchronous resonance damping via doubly fed induction generator’, Int. J. Electr. Power Energy Syst., 2013, 53, (4), pp. 876883.
    3. 3)
      • 3. Bozhko, S., Blasko-Gimenez, R., Li, R., et al: ‘Control of offshore DFIG-based wind farm grid with line-commutated HVDC connection’. IEEE Power Electronics and Motion Control Conf., Portoroz, Slovenia, September 2006, pp. 15631568.
    4. 4)
      • 4. Ma, W., Fan, J.: ‘Planning and design of UHVDC transmission system’, High Volt. Eng., 2015, 41, (8), pp. 25452549.
    5. 5)
      • 5. Liu, Z., Zhang, Q., Dong, C., et al: ‘Efficient and security transmission of wind, photovoltaic and thermal power of large-scale energy resource bases through UHVDC projects’, Proc. CSEE, 2014, 34, (16), pp. 25132522.
    6. 6)
      • 6. Guo, X., Zhao, L., Tang, Y., et al: ‘Study on angle transient stability for wind-thermal-bundled power transmitted by AC/DC system’, Proc. CSEE, 2013, 33, (22), pp. 1925.
    7. 7)
      • 7. Guo, X., Ma, S., Shen, H., et al: ‘HVDC grid connection schemes and system stability control strategies for large-scale wind power’, Autom. Electr. Power Syst., 2012, 36, (15), pp. 107115.
    8. 8)
      • 8. Wang, Q., Yang, Y., Wang, N.: ‘Study on the frequency adjustment characteristics of wind power uniting thermal power outgoing system’, Electr. Power, 2014, 47, (3), pp. 613.
    9. 9)
      • 9. Chen, S., Chen, H., Tang, X.: ‘Generator tripping control to uphold transient stability of power grid outwards transmitting thermal-generated power bundled with wind power’, Power Syst. Technol., 2013, 37, (2), pp. 514519.
    10. 10)
      • 10. Bahrman, M., Larsen, E.V., Piwko, R.J., et al: ‘Experience with HVDC-turbine-generator torsional interaction at square butte’, IEEE Trans. Power Appar. Syst., 1980, PAS-99, (3), pp. 966975.
    11. 11)
      • 11. Yang, Y., Qiu, W., Zhao, X., et al: ‘Evaluation of subsynchronous oscillation of Xiluodu right station – Guangdong double line ± 500 kV DC transmission project’. IEEE Int. Conf. on Power System Technology, Auckland, New Zealand, October 2012, pp. 14.
    12. 12)
      • 12. Chao, H., Rao, H.: ‘The study of SSTI between Guizhou-Guangdong II ±500 kV DC transmission link and steam-turbine-generators near the rectifier terminal’. Int. Conf. on Power System Technology, Chongqing, China, October 2006, pp. 16.
    13. 13)
      • 13. Gao, F., Wu, Y., Jiang, G., et al: ‘Analysis on damping characteristics of subsynchronous oscillation in hulunbuir power plant’. Power and Energy Engineering Conf., Hong Kong, China, December 2014, pp. 16.
    14. 14)
      • 14. Xiao, X., Luo, C., Zhang, J., et al: ‘Analysis of frequently over-threshold subsynchronous oscillation and its suppression by subsynchronous oscillation dynamic suppressor’, IET Gener. Transm. Distrib., 2016, 10, (9), pp. 21272137.
    15. 15)
      • 15. Fischer De Toledo, P., Angquist, L., Nee, H.-P.: ‘Frequency-domain modelling of sub-synchronous torsional interaction of synchronous machines and a high voltage direct current transmission link with line-commutated converters’, IET Gener. Transm. Distrib., 2010, 4, (3), pp. 418431.
    16. 16)
      • 16. Zhang, D., Xiao, X., Yang, L., et al: ‘Research on SSO caused by HVDC based on eigenvalue analysis’, Adv. Mater. Res., 2012, 383–390, pp. 47924798.
    17. 17)
      • 17. Subsynchronous Resonance Working Group: ‘Reader's guide to subsynchronous resonance’, IEEE Trans. Power Syst., 1992, 7, (1), pp. 150157.
    18. 18)
      • 18. Moharana, A., Varma, R.K., Seethapathy, R.: ‘Modal analysis of induction generator based wind farm connected to series-compensated transmission line and line commutated converter high-voltage DC transmission line’, Electr. Power Compon. Syst., 2014, 42, (6), pp. 612628.
    19. 19)
      • 19. Su, J., Shi, L., Yao, L., et al: ‘A comparative sub-synchronous resonance analysis of grid-connected doubly fed induction generator based and permanent magnet synchronous generator based wind farms’, Electr. Power Compon. Syst., 2015, 43, (7), pp. 792809.
    20. 20)
      • 20. Xiao, X., Luo, C., Liao, K.: ‘Review of the research on subsynchronous oscillation issues in electric power system with renewable energy sources’, Trans. China Electrotech. Soc., 2017, 32, (6), pp. 8597.
    21. 21)
      • 21. IEEE subsynchronous resonance task force: ‘First benchmark model for computer simulation of subsynchronous resonance’, IEEE Trans. Power Appar. Syst., 1977, 96, (5), pp. 15651572.
    22. 22)
      • 22. Fan, L., Miao, Z.: ‘Mitigating SSR using DFIG-based wind generation’, IEEE Trans. Sustain. Energy, 2012, 3, (3), pp. 349358.
    23. 23)
      • 23. Moharana, A., Varma, R.K.: ‘Sub-synchronous resonance in single-cage self-excited-induction-generator-based wind farm connected to series-compensated lines’, IET Gener. Transm. Distrib., 2011, 5, (12), pp. 12211232.
    24. 24)
      • 24. Fernandez, L.M., Jurado, F., Saenz, J.R.: ‘Aggregated dynamic model for wind farms with doubly fed induction generator wind turbines’, Renew. Energy, 2008, 33, (1), pp. 129140.
    25. 25)
      • 25. Szechtman, M., Wess, T., Thio, C.V.: ‘A benchmark model for HVDC system studies’. Int. Conf. on AC and DC Power Transmission, London, UK, September 1991, pp. 374378.
    26. 26)
      • 26. Prabha, K.: ‘Power system stability and control’ (McGraw-Hill Press, New York, NY, USA, 1994, 1st edn.).
    27. 27)
      • 27. Wu, F., Zhang, X.P., Godfrey, K., et al: ‘Small signal stability analysis and optimal control of a wind turbine with doubly fed induction generator’, IET Gener. Transm. Distrib., 2007, 1, (5), pp. 751760.
    28. 28)
      • 28. Karawita, C., Annakkage, U.D.: ‘Multi-infeed HVDC interaction studies using small-signal stability assessment’, IEEE Trans. Power Deliv., 2009, 24, (2), pp. 910918.
    29. 29)
      • 29. Padiyar, K.R.: ‘Analysis of subsynchronous resonance in power system’ (Kluwer Academic Publisher Press, Boston, MA, USA, 1999).
    30. 30)
      • 30. IEEE Std 1204-1997: ‘IEEE guide for planning DC links terminating at AC locations having low short-circuit capacities’ (IEEE PES, New York, 1997), pp. 8189.

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