The impact of sub-hourly modelling in power systems with significant levels of renewable generation

J. P. Deane; G. Drayton; B. P. Ó Gallachóir

doi:10.1016/j.apenergy.2013.07.027

The impact of sub-hourly modelling in power systems with significant levels of renewable generation

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Abstract

The objective of this work is to determine the impact of sub-hourly modelling of a power system with significant amounts of wind generation. This paper presents the modelling of the Irish power system for a one year period at 5. min, 15. min, 30. min and 60. min resolution simulations using a unit commitment and economic dispatch model assuming perfect foresight. The work examines how much operational costs increase with more accurate resolution. Results show that increased temporal resolution captures more variability in system load and renewable generation, and is necessary to capture the inflexibilities of thermal units that lead to more realistic estimations in total generation costs. Significant cycling and ramping of units is also captured in higher resolution modelling that hourly resolution modelling is unable to capture.

Original language	English
Pages (from-to)	152-158
Number of pages	7
Journal	Applied Energy
Volume	113
DOIs	https://doi.org/10.1016/j.apenergy.2013.07.027
Publication status	Published - 2014

Keywords

Power systems modelling
System flexibility
Unit commitment and economic dispatch
Wind power

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.apenergy.2013.07.027

Cite this

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title = "The impact of sub-hourly modelling in power systems with significant levels of renewable generation",

abstract = "The objective of this work is to determine the impact of sub-hourly modelling of a power system with significant amounts of wind generation. This paper presents the modelling of the Irish power system for a one year period at 5. min, 15. min, 30. min and 60. min resolution simulations using a unit commitment and economic dispatch model assuming perfect foresight. The work examines how much operational costs increase with more accurate resolution. Results show that increased temporal resolution captures more variability in system load and renewable generation, and is necessary to capture the inflexibilities of thermal units that lead to more realistic estimations in total generation costs. Significant cycling and ramping of units is also captured in higher resolution modelling that hourly resolution modelling is unable to capture.",

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pages = "152--158",

journal = "Applied Energy",

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AU - Deane, J. P.

AU - Drayton, G.

AU - Ó Gallachóir, B. P.

PY - 2014

Y1 - 2014

N2 - The objective of this work is to determine the impact of sub-hourly modelling of a power system with significant amounts of wind generation. This paper presents the modelling of the Irish power system for a one year period at 5. min, 15. min, 30. min and 60. min resolution simulations using a unit commitment and economic dispatch model assuming perfect foresight. The work examines how much operational costs increase with more accurate resolution. Results show that increased temporal resolution captures more variability in system load and renewable generation, and is necessary to capture the inflexibilities of thermal units that lead to more realistic estimations in total generation costs. Significant cycling and ramping of units is also captured in higher resolution modelling that hourly resolution modelling is unable to capture.

AB - The objective of this work is to determine the impact of sub-hourly modelling of a power system with significant amounts of wind generation. This paper presents the modelling of the Irish power system for a one year period at 5. min, 15. min, 30. min and 60. min resolution simulations using a unit commitment and economic dispatch model assuming perfect foresight. The work examines how much operational costs increase with more accurate resolution. Results show that increased temporal resolution captures more variability in system load and renewable generation, and is necessary to capture the inflexibilities of thermal units that lead to more realistic estimations in total generation costs. Significant cycling and ramping of units is also captured in higher resolution modelling that hourly resolution modelling is unable to capture.

KW - Power systems modelling

KW - System flexibility

KW - Unit commitment and economic dispatch

KW - Wind power

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DO - 10.1016/j.apenergy.2013.07.027

M3 - Article

AN - SCOPUS:84881230945

SN - 0306-2619

VL - 113

SP - 152

EP - 158

JO - Applied Energy

JF - Applied Energy

ER -

The impact of sub-hourly modelling in power systems with significant levels of renewable generation

Abstract

Keywords

UN SDGs

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