考虑复杂尾流效应和连接电缆故障的风电场可靠性建模

Reliability Modeling of Wind Farms Considering Complex Wake Effects and Connecting Cable Failures

通过分析复杂地形下风电机组间的部分遮挡尾流影响,建立了考虑复杂地形情况下的部分遮挡尾流效应计算模型;在考虑风电机组的功率输出特性、复杂尾流效应和风电机组停运的基础上,特别考虑了风电机组间连接电缆故障对风电场可靠性的影响,提出了计及连接电缆停运的风电场可靠性模型。运用威布尔分布模拟风速,对风电机组和连接电缆故障进行序贯蒙特卡洛抽样仿真,利用MATLAB编写相应程序进行算例分析,结果表明复杂尾流效应模型能够相对准确地描述风电机组间尾流影响,计及连接电缆停运的风电场可靠性模型提高了原有风电场可靠性模型的精确性。

A partial block wake effect model in complex terrain is developed based on an analysis of the partial block wake effect between wind turbines(WTs)in complex terrain.On the basis of the power output characteristics of WTs,the wake effect,the WT outages,especially the impact of connecting cable outages on the wind farm reliability,a wind farm reliability model considering the connecting cable outages is presented.Using Weibull distribution to simulate the wind speed and the sequential Monte Carlo method to simulate the outages of WTs and connecting cables,the model is implemented in MATLAB and the results show that the wake effect model in complex terrain can relatively accurately describe the wake effect between WTs while the reliability model taking connecting cable outages into account has improved the accuracy of the original reliability model.