Analysis onPower Generation Prediction Method of Wind Farm in Operation
The existing post-evaluation method of power generation is similar to the method of calculation in the feasibility stage,and does not consider the topographic map deviation of the project,software error,the actual fault loss of the wind farm and the loss of wind curtailment and power rationing.Taking 7 wind farms that have been put into operation in Shaanxi province as the research object,combined with SCADA data during operation,this paper studies the difference between pre-evaluation power generation and operation power generation,and summarizes a set of wind farm operation power generation evaluation method.For wind farms that have been put into operation,it is necessary to restore the grid-connected electricity during the operation period,and obtain the theoretical grid-connected electricity during the operation period after considering the wind farm failure loss,grid power limiting loss and wind abandonment loss.The mean monthly wind speed of the wind farm at the same time is linearly correlated with the theoretical energy generation of each month,and the linear relationship curve between the theoretical energy generation and the mesoscale wind speed during the operation period is obtained.Using this relation,the average monthly wind speed of the mesoscale data for many years is used to calculate the theoretical energy generation of the representative year.Considering the average failure loss,average power limit loss and wind curtailment rate of wind farm during operation,the average grid-connected power in subsequent years is obtained by comprehensive reduction.According to the above research method,the risk of power genera-tion prediction in subsequent years can be effectively reduced,so that the power generation prediction of wind farms in operation can be more reasonable.
wind farmpost-evaluationpower generationmesoscale wind speedrepresentative year
NETL
NSTL
万方数据
