Unit commitment for systems with significant wind penetration

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Title: Unit commitment for systems with significant wind penetration
Authors: Tuohy, Aidan
Meibom, Peter
Denny, Eleanor
O'Malley, Mark
Permanent link: http://hdl.handle.net/10197/2351
Date: May-2009
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.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: IEEE
Copyright (published version): 2009 IEEE
Keywords: Power generation dispatch;Power system economics;Stochastic systems;Wind power generation
Subject LCSH: Electric power production--Economic aspects
Wind power plants
Electric power systems--Load dispatching
Stochastic systems
DOI: 10.1109/TPWRS.2009.2016470
Language: en
Status of Item: Peer reviewed
Appears in Collections:ERC Research Collection
Electrical and Electronic Engineering Research Collection

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