Study On The Liaoning Grid Accommodation Of Wind Power Refined With Peak Shaving Capacity

With the increasement of the scale of wind power in grid, sometimes wind power affects negatively on peak shaving, which means that wind power has to be under grid capacity of peak shaving. This involves with these aspects: wind power fluctuation, the correlation of change in load and wind power fluctuation, system capacity. This thesis will make an exploration of these three aspects above on the ground of the analysis for the quantitative criteria of a large scale wind power's efforts on peak shaving, trying to propose a calculation method refined with peak shaving capacity of the accommodation of the wind power.Fristly, to make sure the feature of the large scale of wind power, it has to adopt a series of data that are measured practically on 22 wind power farms of a certain province. It is revealed"single motor - individual farm- wind group"the wind power output's the cluster effect by analyzing sampling interval for (5min-1h) wind power fluctuation characteristics, which provides a theory background the research of the effect of large scale wind power on peak shaving.Base on the research of the correlation between wind power output and the change of daily load and opposite peak shaving effect, it is believe that the time of loadvalley is hard to accommodate wind power. Combined with wind power output's the cluster effect and the analysis of temporary power peak-sharing ability, loadvalley's power, the calculation method refined with the peak shaving capacity is constructed.With the regard of the power situation of Liaoning Province, the accommodation of the wind power is achieved refined with peak shaving capacity of the accommodation of the wind power in 2010 winter high and low load mode. The parameters are tested by real generation outputs and load.