Short circuit current constrained UC in the high IBG-penetrated power systems
OA Location
Author(s)
Chu, Zhongda
Teng, Fei
Type
Journal Article
Abstract
Inverter Based Generators (IBGs) have been increasing significantly in power systems. Due to the demanding thermal rating of Power Electronics (PE), their contribution to the system Short Circuit Current (SCC) is much less than that from the conventional Synchronous Generators (SGs) thus reducing the system strength and posing challenges to system protection and stability. This paper proposes a Unit Commitment (UC) model with SCC constraint in high IBG-penetrated systems to ensure minimum operation cost while maintaining the SCC level at each bus in the system. The SCC from synchronous generators as well as the IBGs are explicitly modeled in the formulation leading to an SCC constraint involving decision-dependent matrix inverse. This highly nonlinear constraint is further reformulated into linear form conservatively. The influence of the SCC constraint on the system operation and its interaction with the frequency regulation are demonstrated through simulations on IEEE 30- and 118-bus systems.
Date Issued
2021-07-01
Date Acceptance
2021-01-01
Citation
IEEE Transactions on Power Systems, 2021, 36 (4), pp.3776-3785
ISSN
0885-8950
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Start Page
3776
End Page
3785
Journal / Book Title
IEEE Transactions on Power Systems
Volume
36
Issue
4
Copyright Statement
© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Identifier
https://ieeexplore.ieee.org/document/9329077
Subjects
0906 Electrical and Electronic Engineering
Energy
Publication Status
Published
Date Publish Online
2021-01-20