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李岩, 邹常跃, 饶宏, 许树楷, 洪潮, 黄立滨, 李巍巍. 柔性直流与极端交流系统间的谐波谐振[J]. 中国电机工程学报, 2018, 38(S1): 19-23. DOI: 10.13334/j.0258-8013.pcsee.172363
引用本文: 李岩, 邹常跃, 饶宏, 许树楷, 洪潮, 黄立滨, 李巍巍. 柔性直流与极端交流系统间的谐波谐振[J]. 中国电机工程学报, 2018, 38(S1): 19-23. DOI: 10.13334/j.0258-8013.pcsee.172363
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LI Yan, ZOU Changyue, RAO Hong, XU Shukai, HONG Chao, HUANG Libin, LI Weiwei. Resonance of VSC-HVDC With Extreme AC Grid[J]. Proceedings of the CSEE, 2018, 38(S1): 19-23. DOI: 10.13334/j.0258-8013.pcsee.172363
Citation: LI Yan, ZOU Changyue, RAO Hong, XU Shukai, HONG Chao, HUANG Libin, LI Weiwei. Resonance of VSC-HVDC With Extreme AC Grid[J]. Proceedings of the CSEE, 2018, 38(S1): 19-23. DOI: 10.13334/j.0258-8013.pcsee.172363
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柔性直流与极端交流系统间的谐波谐振

Resonance of VSC-HVDC With Extreme AC Grid

    摘要
  • 摘要: 柔性直流输电技术正逐步应用于电网500kV主网架中。电网对送电设备高可靠性的要求,使柔性直流与交流系统的交互影响受到更多的重视。分析了柔性直流接入极端交流系统的高频谐振、低频谐振两种典型振荡模式。分析了柔性直流与交流系统高频谐振机理,高频振荡对控制参数变化不敏感,与控制链路延时、前馈策略相关性高,提出了可行的高频谐振抑制策略。此外,给出了典型的低频振荡仿真案例,仿真验证了低频谐振与控制参数的敏感性。

     

    Abstract: The modular multilevel converter（MMC） based VSC-HVDC with high-capacity is applying to 500 k V main grid nowadays. Due to the high reliablity requirement of power grid, the interaction of VSC-HVDC and the grid is becoming more and more important. High-frequency and low-frequency resonance of VSC-HVDC with extreme AC grid were analyzed in this paper. The high-frequency resonance mechanism and its stability criterion were analyzed. The high-frequency resonance is sensitive to delay and feedforward control instead of current control, high-frequency suppression methods were provided.Furthermore, typical low-frequency resonance was presented,simulations show that low-frequency resonance was highly sensitive to controller parameters.

     

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