| 引用本文: | 胡文平,周文,王磊,等.基于联合仿真的风电机组低电压穿越传动链扭振抑制研究[J].电力系统保护与控制,2016,44(24):196-201. |
| HU Wenping,ZHOU Wen,WANG Lei,et al.Study on suppression strategy for wind turbine drive train torsional vibration under grid fault based on co-simulation[J].Power System Protection and Control,2016,44(24):196-201 |
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| 摘要: |
| 针对双馈风电机组传动链电网故障过程中可能存在的扭振问题，采用弹簧阻尼质量建模方法，建立了能够反映柔性特性的传动链模型，得出了其自然振荡频率与阻尼系统解析表达式，揭示了柔性传动链的欠阻尼系统本质。通过故障期间发电机电磁转矩特性分析，说明了通过发电机电磁转矩突变量与高频脉动控制减弱传动链机械扭振的不可行性。在此基础上，提出了电网故障期间传动链的虚拟变阻尼控制策略，通过发电机附加转矩控制等效增大传动链阻尼，抑制了电网故障期间传动链的扭振。通过风电机组Bladed+Matlab联合仿真模型仿真分析，证明了理论分析与虚拟变阻尼扭振抑制策略的有效性。 |
| 关键词: 电网故障 传动链扭振 虚拟变阻尼 扭振抑制 联合仿真 |
| DOI：10.7667/PSPC152181 |
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| Study on suppression strategy for wind turbine drive train torsional vibration under grid fault based on co-simulation |
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HU Wenping,ZHOU Wen,WANG Lei,LI Xiaojun
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(Electric Power Research Institute, State Grid Hebei Electric Power Company, Shijiazhuang 050021, China)
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| Abstract: |
| As the drive train torsional vibration may be stimulated by the huge change of electromagnetic torque caused by grid fault, the flexible drive train is modeled using spring-damping-mass modeling method firstly, the analytical expression of the natural oscillation frequency and damping coefficient are obtained, and the flexible drive train is typical under damped system is revealed. Then the ineffectiveness of the change of generator torque and high frequency torque pulse control is illuminated by analyzing characteristics of the generator electromagnetic torque during grid fault. On this basis, the torsional vibration suppression strategy of virtual variable damping is proposed, which is worked by implementing additional electromagnetic torque to increase in the drive train damping equivalently during the grid fault. The Bladed and Matlab co-simulation results strongly support the theoretical analysis and verify the proposed control strategy. |
| Key words: grid fault drive train torsion vibrating virtual variable damping torsional vibration suppression co-simulation |
