双馈型风电机组传动链降载控制技术研究与仿真
Research and simulation of load reduction control technology for the drive train of doubly-fed wind turbine
刘河生 1雷航 1张瑞刚1
作者信息
- 1. 西安热工研究院有限公司,陕西 西安 710054
- 折叠
摘要
为定量研究双馈型风力发电机组传动链的扭振控制,提出了一种基于卡尔曼滤波的反馈控制策略,并通过仿真计算的方式对比了传动链扭振的控制效果.以 7.0 MW双馈型风力发电机组传动链为研究对象,采用卡尔曼滤波估计传动链扭振角度,并以低速轴扭振速度估计值为参考设计了发电机附加电磁转矩作用于风电机组转矩控制,与虚拟阻尼控制、无阻尼控制进行了 20 年全生命周期内的载荷与发电量计算对比.结果表明:经过卡尔曼滤波估计的低速轴扭角与实际值的相关性可以达到 0.99;基于卡尔曼滤波的反馈控制分别与虚拟阻尼控制、无阻尼控制的关键差异为,传动链低速轴等效疲劳载荷分别降低 2.11%、4.89%,传动链高速轴等效疲劳载荷分别降低 1.99%、4.78%,发电量分别降低 200、700 kW·h.卡尔曼滤波对传动链扭角估计较准确,且以卡尔曼滤波估计得到的低速轴扭振速度设计的附加电磁转矩对传动链扭振具有非常好的抑制效果.
Abstract
A feedback control strategy based on Kalman filter was proposed to quantitatively study the drive train torsional vibration mitigation of doubly-fed wind turbine,and the control effect of drive train torsional vibration was compared through simulation calculation.Taking the drive train of 7.0 MW doubly-fed wind turbine as the research object,the Kalman filter was used to estimate the twist angle of the drive train,and an additional electromagnetic torque of the generator was designed for torque control based on the estimated torsional speed of low-speed shaft.The load and power generation calculations were compared with virtual damping control and no-damping control over 20 years full life cycle.The results show that,the correlation between the twist angle of the low-speed shaft estimated by the Kalman filter and the actual value can reach 0.99.The key differences between the feedback control based on the Kalman filter,the virtual damping control and the non-damping control are as follows.The equivalent fatigue load of the low-speed shaft of the drive train reduces by 2.11%and 4.89%,respectively.The equivalent fatigue load of the high-speed shaft of the drive train reduces by 1.99%and 4.78%,respectively.The power generation reduces by 200 kW·h and 700 kW·h,respectively.It can be concluded that the Kalman filter has a good estimating effect on the twist angle of drive train,and the designed additional electromagnetic torque based on the estimated torsional speed of low-speed shaft obtained by Kalman filtering has a very good suppression effect on the torsional vibration of the drive train.
关键词
双馈型风电机组/传动链扭振/卡尔曼滤波/等效疲劳载荷/年发电量Key words
doubly fed wind turbine/drive train torsional vibration/Kalman filter/equivalent fatigue load/annual energy output引用本文复制引用
基金项目
西安热工研究院有限公司科技项目(TQ-22-TYK27)
出版年
2024
国家科技期刊平台
NSTL
万方数据