Change search
ReferencesLink to record
Permanent link

Direct link
Wind Power in Areas with Limited Export Capability
KTH, Superseded Departments, Electrical Systems.
2004 (English)Licentiate thesis, monograph (Other scientific)
Abstract [en]

During the last two decades, increase in electricity demand and environmental concern resulted in fast growth of power production from renewable sources. Wind power is one of the most efficient alternatives. Due to rapid development of wind turbine technology and increasing size of wind farms, wind power plays a significant part in the power production mix of Germany, Spain, Denmark and some other countries.

Wind power has to be built in areas with good wind potential. The best conditions for installation of wind power are, thus, in remote areas free of obstacles, and consequently with low population density. The transmission system in such areas might not be dimensioned to accommodate additional large-scale power plants. Insufficient transmission capacity problem, however, would emerge for any type of new generation, planned in similar conditions, although wind power has some special features that should be considered solving this problem.

In this thesis the four possibilities are considered. One possibility is to revise the methods for calculation of available transmission capacity. Another solution for large-scale integration of wind power in such areas is to reinforce the network. This alternative however may be expensive and time consuming. Since wind power production depends on the wind speed, the wind farm utilization time is only 2000-4000 hours a year, and power production peaks not necessarily occur during periods with insufficient transmission capacity. Therefore wind energy curtailment may be considered as an alternative for large-scale wind power integration. It is also possible to store excess wind energy during the periods with insufficient transmission capacity. Conventional power plants with possibilities of fast production control (e.g. hydro power plants or gas power plants) may also be employed for this purpose.

There is a lot of research regarding first two measures, therefore, this thesis provides a review and summarized conclusions from the existing work and further concentrates on development of the methods for estimation of wind energy curtailment and evaluation of wind energy storage possibility in hydro reservoirs.

Methods similar to probabilistic production cost simulation are developed for estimation of wind energy curtailment. The developed methods are applicable to discrete variables (measurements) and also generalized for continuous variables with known distribution.

For evaluation of wind energy storage possibility the optimization problem is formulated, the objective of this evaluation is to minimize the costs for power production under consideration of the future water value. The developed method allows us to analyze previous years of operation of the power system (e.g. dry, wet and normal year) and evaluate physical possibilities for wind energy storage. The developed methods are than tested for Swedish power system and the results are also summarized in this thesis.
























Place, publisher, year, edition, pages
Stockholm: KTH , 2004. , xxii, 105 p.
Trita-ETS, ISSN 1650-674X ; 2004-01
Keyword [en]
wind power, transmission capacity
National Category
Electrical Engineering, Electronic Engineering, Information Engineering Production Engineering, Human Work Science and Ergonomics
URN: urn:nbn:se:kth:diva-1719ISBN: ISSN-1650-674xOAI: diva2:7677
QC 20100607Available from: 2004-03-17 Created: 2004-03-17 Last updated: 2010-06-08Bibliographically approved

Open Access in DiVA

fulltext(3693 kB)3008 downloads
File information
File name FULLTEXT01.pdfFile size 3693 kBChecksum MD5
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Matevosyan, Julija
By organisation
Electrical Systems
Electrical Engineering, Electronic Engineering, Information EngineeringProduction Engineering, Human Work Science and Ergonomics

Search outside of DiVA

GoogleGoogle Scholar
Total: 3008 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 733 hits
ReferencesLink to record
Permanent link

Direct link