基于风电场运行数据的风电功率波动特性研究

Study of the Wind Power’s Fluctuation Characteristics Based on the Operation Data of Wind Farm

随着风电在电网中所占容量的不断增加,风电功率波动对电网的影响愈发严重。湍流风的波动性是风电功率波动的主要来源,然而二者的具体关系尚不明确。为此,基于内蒙古克旗一风电场的实际运行数据,对风电功率波动特性开展了研究。结果证明了大气湍流波动在大、中时间尺度上对风电功率波动起主导作用,只有小时间尺度的功率波动主要受机组运行特性影响。此外,大气湍流的间歇性也会传递至风电功率上,甚至会被风电场进一步放大。

With an increasing capacity of wind power in the power grid,the impact of wind power fluctuations on the power grid becomes more and more serious.Turbulent wind is the main source of wind power fluctuation but the specific relationship between the two is still unclear.To this end,based on the operation data of a wind farm in Hexigten,Inner Mongolia,the fluctuation characteristics of wind power is analyzed.The results show that atmospheric turbulence fluctuations of turbulent plays a dominant role in wind power fluctuation on large and mid-time scales,whereas on small time scale,the wind power fluctuation is mainly affected by the operating characteristics of wind turbines.In addition,the intermittence of atmospheric turbulence also transmits to the wind power,and even be amplified by the wind farm.