利用湖北省某山区风电场2017年11月—2022年2月风电机组覆冰观测记录,结合高精度气象再分析资料,综合考虑风电机组的地形条件进行插值,得到每台风电机组的逐小时气象要素资料,在此基础上分析风电机组覆冰及消融阶段气象要素变化,得到风电机组覆冰时刻与消融时刻气象要素临界值。1）在风电机组覆冰阶段,气温呈持续下降状态,相对湿度呈持续上升状态,风速在风电机组覆冰前后无明显波动,持续平稳且风速较大。2）在风电机组覆冰阶段,气温呈持续上升状态,在覆冰消融时刻达到峰值;相对湿度呈持续下降状态,在覆冰消融时刻达到最低值;风速呈持续平稳状态,较覆冰阶段明显减小。3）风电机组覆冰的临界气象条件为轮毂高度处气温为0~2 ℃,风速为4~6 m/s,微量降水或无降水,相对湿度95%以上;风电机组覆冰消融的临界气象条件为轮毂高度处气温为4 ℃以上,风速为2~4 m/s,相对湿度小于90%。
Abstract
Based on the wind turbine icing observation records from November 2017 to February 2022 in a mountain wind farm in Hubei Province, and combined with high-precision meteorological reanalysis data, interpolation is carried out by comprehensively considering the terrain conditions of wind turbines, on the basis of the hourly meteorological data of each fan, the changes of the meteorological factors during the icing and melting stages are analyzed, and the critical values of the meteorological factors at the icing and melting stages are obtained. 1） during the icing stage of the fan, the air temperature decreased continuously, the relative humidity increased continuously, and the wind speed did not fluctuate too much before and after the icing stage. 2） during the icing stage of the fan, the air temperature rises continuously and reaches the peak at the time of ice melting; the relative humidity decreases continuously and reaches the lowest value at the time of ice melting; the wind speed remains stable and significantly decreases compared to the icing stage. 3） the critical meteorological conditions for the ice coating of the fan are that the air temperature at the height of the wheel hub is about 0-2 ℃, the wind speed is in the range of 4-6 m/s, there is little or no precipitation, and the relative humidity is over 95%; The critical meteorological conditions for ice melting of the fan are that the air temperature is above 4 ℃ at the height of the wheel hub, the wind speed is in the range of 2-4 m/s, and the relative humidity is less than 90%.
关键词
风电场 /
风电机组 /
覆冰 /
气象 /
临界值
Key words
wind farm /
wind turbines /
icing /
meteorology /
critical value
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基金
湖北省自然科学基金联合基金项目（2022CFD131）
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