Capacity Optimization Analysis of Dispersed Wind Farm

Integration and local consumption of dispersed wind power generation is an effective solution to wind power discarding of large scale of centralized wind farms, increasing the utilization efficiency of the wind source greatly. So far, there is no specified standard issued, determining the installation capacity of dispersed wind farms. The unique criterion to determine that whether the power generated by the wind farms could be consumed locally is the valley load, which ensures the uniqueness of the power flow direction through the transformers, to which the wind farm is connected, relaxing the pressure of dispatching and operating. However, the aforementioned criterion is too harsh, assuming entirely opposite of the load curve and wind farm output power curve, which weakens the utilization efficiency of wind source and leads to great discounting of the economy of the wind power investment. Hence, an optimization method for dispersed wind farm installation capacity connected to power networks of 110kV or below is proposed in this paper, which forecasts the output power curves of the newly installed wind farm according to high positive correlations among wind farms near to each other and determines the actual consumption level of the dispersed wind farm according to load curve and the wind farm output power curve, combining reasonable wind power discarding strategy. The result of some real wind farms in Jiangsu shows that the installation capacity of the dispersed wind farm is increased effectively, raising the annual profit of the wind farm greatly.