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Unit commitment for systems with significant wind penetration
Date Issued
2009-05
Date Available
2010-08-12T13:33:42Z
Abstract
The stochastic nature of wind alters the unit commitment and dispatch problem. By accounting for this uncertainty when scheduling the system, more robust schedules are produced, which should, on average, reduce expected costs. In this paper, the effects of stochastic wind and load on the unit commitment and dispatch of power systems with high levels of wind power are examined. By comparing the costs, planned operation and performance of the schedules produced, it is shown that stochastic optimization results in less costly, of the order of 0.25%, and better performing schedules than deterministic optimization. The impact of planning the system more frequently to account for updated wind and load forecasts is then examined. More frequent planning means more up to date forecasts are used, which reduces the need for reserve and increases performance of the schedules. It is shown that mid-merit and peaking units and the interconnection are the most affected parts of the system where uncertainty of wind is concerned.
Sponsorship
Science Foundation Ireland
Other Sponsorship
Electricity Research Centre (ERC) Industry Members
Type of Material
Journal Article
Publisher
IEEE
Journal
IEEE Transactions on Power Systems
Volume
24
Issue
2
Start Page
592
End Page
601
Series
Electricity Research Centre(ERC)
Copyright (Published Version)
2009 IEEE
Subject – LCSH
Electric power production--Economic aspects
Wind power plants
Electric power systems--Load dispatching
Stochastic systems
Web versions
Language
English
Status of Item
Peer reviewed
ISSN
0885-8950
This item is made available under a Creative Commons License
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