Coordinated dynamic voltage support from inverter-based resources
Author(s)
Guo, Yifei
Lei, Cong
Pal, Bikash C
Jabr, Rabih A
Wang, Haoquan
Type
Journal Article
Abstract
This paper presents an optimization approach for coordinated dynamic voltage support (coDVS) using inverter-based resources (IBRs) to enhance network-wide capability of riding through voltage disturbances. Specifically, an optimal coDVS model is developed to alleviate voltage sags in distribution networks. The model is essentially non-convex and hard to solve in general; however, it admits an exact convex semidefinite programming (SDP) relaxation, enabling us to retrieve the globally optimal solution. We prove the equivalence in theory between the current-based and voltage-based formulations of the coDVS problem, even under the SDP relaxation, while justifying that the current-based one is numerically more stable. Furthermore, the approach is extended to address voltage swells and voltage unbalances, unifying the treatment under abnormal voltage conditions. Numerical tests on 33, 69, 95 and 3146-bus distribution networks demonstrate the exactness of the SDP relaxation as well as the numerical issue associated with the voltage-based formulations. Dynamic simulations under typical abnormal voltage conditions further validate the effectiveness of the proposed method.
Date Issued
2026-08-18
Date Acceptance
2026-08-01
Citation
IEEE Transactions on Power Systems, 2026
ISSN
0885-8950
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Journal / Book Title
IEEE Transactions on Power Systems
Copyright Statement
Copyright © 2026 IEEE. This is the author’s accepted manuscript made available under a CC-BY licence in accordance with Imperial’s Research Publications Open Access policy (www.imperial.ac.uk/oa-policy)
License URL
Publication Status
Published online
Date Publish Online
2026-08-18