Variability in Large-Scale Wind Power Generation
(English)In: Wind Energy, ISSN 1095-4244, E-ISSN 1099-1824Article in journal (Refereed) Epub ahead of print
The article demonstrates the characteristics of wind power variability and net load variability in multiple power systems based on real data from multiple years. Demonstrated characteristics include probability distribution for different ramp durations, seasonal and diurnal variability, and low net load events. In some characteristics the power systems are different, but in others they are significantly similar. Somewhat surprisingly there seems to be no straightforward correlation between wind power penetration level and variability. As long as there are several wind power plants with enough geographical spread, most of the smoothing impact is captured. Wind power variability is mainly explained by the extent of geographical spread, but also higher capacity factor causes higher variability. It was also shown how wind power ramps are auto correlated and dependent on the operating output level. In most cases wind power did not have strong diurnal or seasonal variations in the variability. However, there can be exceptions depending on the latitude and on the local characteristics of the wind resource.
Place, publisher, year, edition, pages
John Wiley & Sons.
wind power, variability, net load, variable generation, power systems
Research subject Electrical Engineering
IdentifiersURN: urn:nbn:se:kth:diva-171066DOI: 10.1002/we.1942ScopusID: 2-s2.0-84949844326OAI: oai:DiVA.org:kth-171066DiVA: diva2:841772
ProjectsElektra 36141: Korttidsplanering av vatten-värmekraftsystem vid stora mängder vindkraft: System-perspektivet
QP 2016012015-07-142015-07-142016-01-13Bibliographically approved