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Title: Representing Operational Flexibility in Generation Expansion Planning Through Convex Relaxation of Unit Commitment

Abstract

Large shares of renewable generation in electric power systems increase the need for operational flexibility. Consideration of operational flexibility in generation expansion planning (GEP) necessitates the modeling of unit commitment (UC) in system operations. However, the UC problem itself is computationally challenging. We present a GEP model in which the embedded operational problem is a convex relaxation of the UC problem. Through a large-scale example based on the Texas system, we show the tightness and tractability of our relaxation, as well as the impact of operational flexibility on GEP.

Authors:
ORCiD logo; ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
U.S. Department of Defense (DOD) - Defense Threat Reduction Agency (DTRA); USDOE Office of Electricity Delivery and Energy Reliability
OSTI Identifier:
1466382
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Power Systems
Additional Journal Information:
Journal Volume: 33; Journal Issue: 2; Journal ID: ISSN 0885-8950
Publisher:
IEEE
Country of Publication:
United States
Language:
English
Subject:
Lagrangian relaxation; convex optimization; generation expansion planning; operational flexibility; unit commitment

Citation Formats

Hua, Bowen, Baldick, Ross, and Wang, Jianhui. Representing Operational Flexibility in Generation Expansion Planning Through Convex Relaxation of Unit Commitment. United States: N. p., 2018. Web. doi:10.1109/tpwrs.2017.2735026.
Hua, Bowen, Baldick, Ross, & Wang, Jianhui. Representing Operational Flexibility in Generation Expansion Planning Through Convex Relaxation of Unit Commitment. United States. doi:10.1109/tpwrs.2017.2735026.
Hua, Bowen, Baldick, Ross, and Wang, Jianhui. Thu . "Representing Operational Flexibility in Generation Expansion Planning Through Convex Relaxation of Unit Commitment". United States. doi:10.1109/tpwrs.2017.2735026.
@article{osti_1466382,
title = {Representing Operational Flexibility in Generation Expansion Planning Through Convex Relaxation of Unit Commitment},
author = {Hua, Bowen and Baldick, Ross and Wang, Jianhui},
abstractNote = {Large shares of renewable generation in electric power systems increase the need for operational flexibility. Consideration of operational flexibility in generation expansion planning (GEP) necessitates the modeling of unit commitment (UC) in system operations. However, the UC problem itself is computationally challenging. We present a GEP model in which the embedded operational problem is a convex relaxation of the UC problem. Through a large-scale example based on the Texas system, we show the tightness and tractability of our relaxation, as well as the impact of operational flexibility on GEP.},
doi = {10.1109/tpwrs.2017.2735026},
journal = {IEEE Transactions on Power Systems},
issn = {0885-8950},
number = 2,
volume = 33,
place = {United States},
year = {2018},
month = {3}
}