Analysis of the impact of sub-hourly unit commitment on power system dynamics

T. Kërçi; J. Giraldo; F. Milano

doi:10.1016/j.ijepes.2020.105819

Analysis of the impact of sub-hourly unit commitment on power system dynamics

T. Kërçi, J. Giraldo, F. Milano^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

21 Citations (Scopus)

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Abstract

This paper discusses the impact of the sub-hourly unit commitment problem on power system dynamics. Such an impact is evaluated by means of a co-simulation platform that embeds a sub-hourly stochastic mixed-integer linear programming security constrained unit commitment (sSCUC) into a time domain simulator, as well as includes a rolling planning horizon that accounts for forecast updates. The paper considers different sub-hourly sSCUC resolutions (i.e., 5 and 15 min) and different wind penetration levels (i.e., 25 and 50%). The focus is on the transient response of the system and on frequency variations following different sSCUC strategies, and different sSCUC wind power uncertainty and volatility. The case study consists of a comprehensive set of Monte Carlo simulations based on the 39-bus system.

Original language	English
Article number	105819
Journal	International Journal of Electrical Power and Energy Systems
Volume	119
DOIs	https://doi.org/10.1016/j.ijepes.2020.105819
Publication status	Published - Jul 2020
Externally published	Yes

Keywords

Co-simulation
Dynamic performance
Frequency stability
Stochastic programming
Sub-hourly unit commitment

UN SDGs

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

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Cite this

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AU - Kërçi, T.

AU - Giraldo, J.

AU - Milano, F.

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AB - This paper discusses the impact of the sub-hourly unit commitment problem on power system dynamics. Such an impact is evaluated by means of a co-simulation platform that embeds a sub-hourly stochastic mixed-integer linear programming security constrained unit commitment (sSCUC) into a time domain simulator, as well as includes a rolling planning horizon that accounts for forecast updates. The paper considers different sub-hourly sSCUC resolutions (i.e., 5 and 15 min) and different wind penetration levels (i.e., 25 and 50%). The focus is on the transient response of the system and on frequency variations following different sSCUC strategies, and different sSCUC wind power uncertainty and volatility. The case study consists of a comprehensive set of Monte Carlo simulations based on the 39-bus system.

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KW - Dynamic performance

KW - Frequency stability

KW - Stochastic programming

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Analysis of the impact of sub-hourly unit commitment on power system dynamics

Abstract

Keywords

UN SDGs

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