Abstract
A spatial and temporal analysis of wind power generation characteristics was conducted in order to determine the implications of intermittent wind generation dynamics on the profile of the electric loads that must be balanced by dispatchable electrical generators on the electric grid. A parametric analysis was conducted to evaluate the sensitivity of the typical magnitudes of wind power fluctuations on different timescales, power variation range, typical daily and seasonal wind profiles to wind farm size and regional distribution. A methodology to evaluate wind dynamics based on power spectral density analyses have been developed. Results indicate that increasing the size of a local wind farm significantly reduced the magnitude of wind power fluctuations on timescales faster than 12 h, with the largest reductions occurring at the fastest timescales. Additional reductions in power fluctuations can be achieved with the implementation of local and regional distribution of wind turbines in disperse high wind areas. In these cases, it was discovered that the timescale band within which the largest reductions in power fluctuations occurred was dependent on regional geographic features, and did not necessarily correspond to the fastest timescales. In addition, it was also discovered that the aggregation of wind power from different regions could produce a more uniform frequency distribution of power fluctuation reductions.
Highlights
Due to increasing concerns regarding national security, climate change, and environmental impacts of the current energy infrastructure, renewable power generation systems are receiving increased attention
40,400 MW of new peak wind capacity is expected to be added by the year 2012 [4], with forecasts of reaching a total capacity of 300 GW by the year 2030 [4]. This level of continued growth is due to many factors, including but not limited to: (1) the sustained renewal of production tax credits to subsidize new wind projects, (2) an increased focus on utilizing U.S energy resources that have zero or near-zero carbon emissions, (3) the high amount of currently unused high wind resources in the U.S, and (4) the relatively low price of wind turbine projects compared to other renewable power projects of similar scale
From the results of the wind farm size study, it was postulated that the typical degree of power generation dynamics that a given wind farm exhibits is a function of its land area size
Summary
Due to increasing concerns regarding national security, climate change, and environmental impacts of the current energy infrastructure, renewable power generation systems are receiving increased attention. 40,400 MW of new peak wind capacity is expected to be added by the year 2012 [4], with forecasts of reaching a total capacity of 300 GW by the year 2030 [4] This level of continued growth is due to many factors, including but not limited to: (1) the sustained renewal of production tax credits to subsidize new wind projects, (2) an increased focus on utilizing U.S energy resources that have zero or near-zero carbon emissions, (3) the high amount of currently unused high wind resources in the U.S, and (4) the relatively low price of wind turbine projects compared to other renewable power projects of similar scale. The purpose of the presented research is to assess key characteristics associated with wind power generation with sensitivity to wind farm size and varying degrees of regional dispersion, which inherently have implications for supplementary dispatchable power generation
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