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Title: Probability Density Function Characterization for Aggregated Large-Scale Wind Power Based on Weibull Mixtures

Journal Article · · Energies (Basel)
DOI:https://doi.org/10.3390/en9020091· OSTI ID:1419591

Here, the Weibull probability distribution has been widely applied to characterize wind speeds for wind energy resources. Wind power generation modeling is different, however, due in particular to power curve limitations, wind turbine control methods, and transmission system operation requirements. These differences are even greater for aggregated wind power generation in power systems with high wind penetration. Consequently, models based on one-Weibull component can provide poor characterizations for aggregated wind power generation. With this aim, the present paper focuses on discussing Weibull mixtures to characterize the probability density function (PDF) for aggregated wind power generation. PDFs of wind power data are firstly classified attending to hourly and seasonal patterns. The selection of the number of components in the mixture is analyzed through two well-known different criteria: the Akaike information criterion (AIC) and the Bayesian information criterion (BIC). Finally, the optimal number of Weibull components for maximum likelihood is explored for the defined patterns, including the estimated weight, scale, and shape parameters. Results show that multi-Weibull models are more suitable to characterize aggregated wind power data due to the impact of distributed generation, variety of wind speed values and wind power curtailment.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC36-08-GO28308; AC36-08GO28308
OSTI ID:
1419591
Alternate ID(s):
OSTI ID: 1238038
Report Number(s):
NREL/JA-5D00-65841; ENERGA; PII: en9020091
Journal Information:
Energies (Basel), Journal Name: Energies (Basel) Vol. 9 Journal Issue: 12; ISSN 1996-1073
Publisher:
MDPI AGCopyright Statement
Country of Publication:
Switzerland
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Cited By (1)