为研究相邻海上风电场间的尾流与功率干扰特性,基于耦合风电场参数化的中尺度天气研究与预报模式(Weather Research and Forecasting,WRF),以北海海域某两相邻理想海上风电场为研究对象展开数值模拟,量化分析了在不同相邻场间距或下游风电场单机容量设置下的海上风电场尾流效应与功率输出特性.研究发现:当场间距从 20D 时增至 40D 时,上游场尾流引起的下游场最大风速亏损由 3.5m/s 降至2.5m/s,整场功率输出提升21.91%,最大单机功率亏损率由30.03%降至16.78%,场间距的增大有利于上游场尾流内的风速恢复、下游场速度亏损的减缓与整场功率提升.下游场单机容量从 3.6MW增至 4.5MW时,下游整场功率提升7.96%,最大风速亏损为 2.2m/s,;下游场单机容量增至 6.0MW,下游整场功率提升14.19%,最大风速亏损增至3.9m/s,相邻游风电场机型配置的阶梯式布局,有利于提升风电场发电量,提高风资源利用率.
Study on the Impact of Wake and Power Interference between Adjacent Offshore Wind Farms based on a Mesoscale Model
To investigate the wake and power interference characteristics between adjacent offshore wind farms,numerical simulations were conducted using the WRF model coupled with WFP.The study focused on two adjacent ideal offshore wind farms in the North Sea.The analysis quantified the wake effects and power output characteristics of the offshore wind farms under different inter-farm distances and downstream wind turbine capacities.The study found that increasing the inter-farm distance from 20D to 40D reduced the maximum wind speed deficit in the downstream farm from 3.5m/s to 2.5m/s and increased the total power output by 21.91%.The maximum single-turbine power deficit rate decreased from 30.03%to 16.78%.Increasing the inter-farm distance facilitated the recovery of wind speed within the upstream farm's wake,reduced the speed deficit in the downstream farm,and enhanced overall power output.When the single turbine capacity in the downstream farm increased from 3.6MW to 4.5MW,the total power output increased by 7.96%,with a maximum wind speed deficit of 2.2m/s.When the capacity increased to 6.0MW,the total power output increased by 14.19%,but the maximum wind speed deficit also increased to 3.9m/s.A stepped layout of turbine capacities in adjacent wind farms is beneficial for increasing power generation and improving wind resource utilization.
万方数据
维普
