高级检索

海上风电场尾流协同优化方法研究

Collaborative optimization methods for offshore wind farm wake effects

  • 摘要: 海上风电场具有湍流度低、表面粗糙度小和大气稳定度变化显著等特征,导致尾流恢复速率缓慢、尾流效应影响范围更广,与陆上风电场存在较大差异。针对海上风电场特性,实时修正相对风向、湍流强度和风速乘数因子,并设计基于两级序列优化策略的偏航控制算法,结合偏航防抖控制策略,在提升发电量的同时,降低机组偏航轴承与叶片疲劳损伤,实现发电收益与机组寿命保护的协同兼顾。结果表明,在37台风电机组场景下,单次优化耗时约为0.83 min,发电量提升4.9%,偏航轴承和叶片的疲劳损伤增量均低于1%。系统采用OpenMP与Python多进程混合并行架构,结合实时数据修正技术,解决了传统方法在模型精度、计算效率与安全性方面的不足,为大规模海上风电场的提质增效提供了工程化解决方案。

     

    Abstract: To address the energy loss caused by wake interference in offshore wind farms, a collaborative control strategy is proposed that integrates multi-dimensional parameter dynamic correction with a two-stage sequential optimization algorithm. Offshore wind farms are characterized by low turbulence intensity, small surface roughness, and significant changes in atmospheric stability, resulting in a slow wake recovery rate and a wider wake effect range, which differs substantially from onshore wind farms. Therefore, this paper proposes real-time correction of relative wind direction, turbulence intensity, and wind speed multiplier factors based on the characteristics of offshore wind farms, and designs a yaw control algorithm based on a two-stage sequential optimization strategy. Combined with a yaw anti-oscillation control strategy, it increases power generation while reducing fatigue damage to yaw bearings and blades, achieving a balance between power generation benefits and turbine longevity protection. Results show that in a scenario with 37 wind turbines, a single optimization takes approximately 0.83 minutes, power generation increases by 4.9%, and the fatigue damage increment to yaw bearings and blades is less than 1%. The system adopts a hybrid parallel architecture of OpenMP and Python multi-processing, combined with real-time data correction technology, overcoming the shortcomings of traditional methods in terms of model accuracy, computational efficiency, and safety. The method presented in this paper provides an engineering solution for quality improvement and efficiency enhancement in large-scale offshore wind farms.

     

/

返回文章
返回