Studying the variability and uncertainty impacts of variable generation at multiple timescales

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Title: Studying the variability and uncertainty impacts of variable generation at multiple timescales
Authors: Ela, Erik
O'Malley, Mark
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Date: Aug-2012
Online since: 2013-03-14T17:35:13Z
Abstract: With increasing levels of variable renewable energy, there is a growing need to study its impacts on power system operation. Variable generation (VG) is variable and uncertain at multiple timescales, and it is important that system operators understand how each of these characteristics impact their systems since each may have different mitigation strategies. To date, many of the studies of VG integration are limited to studying at one time resolution and therefore cannot analyze the variability and uncertainty impacts across multiple timescales. Here we study the variability and uncertainty impacts across multiple operational timescales. A model is used which integrates multiple scheduling sub-models with different update frequencies, time resolutions, and decision horizons. Using metrics that describe reliability and costs with a methodology that describes the sensitivities and tradeoffs of variability and uncertainty impacts separately with respect to the conditions that cause those impacts, case studies are performed which display greater information on expectations of these impacts on future systems with high penetrations of VG.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: IEEE
Journal: IEEE Transactions on Power Systems
Volume: 27
Issue: 3
Start page: 1324
End page: 1333
Copyright (published version): © 2012 IEEE
Keywords: Automatic generation controlEconomic dispatchPower system operationsPower system reliabilityUnit commitmentVariable generationWind integration
DOI: 10.1109/TPWRS.2012.2185816
Language: en
Status of Item: Not peer reviewed
Appears in Collections:Electrical and Electronic Engineering Research Collection

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