| Autor: |
Hongyuan Liang, Zhigang Li, J. H. Zheng, Q. H. Wu |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
CSEE Journal of Power and Energy Systems, Vol 10, Iss 2, Pp 617-628 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2096-0042 |
| DOI: |
10.17775/CSEEJPES.2022.05250 |
| Popis: |
Line-commutated converter (LCC)-based high-voltage DC (HVDC) systems have been integrated with bulk AC power grids for interregional transmission of renewable power. The nonlinear LCC model brings additional nonconvexity to optimal power flow (OPF) of hybrid AC-DC power grids. A convexification method for the LCC station model could address such nonconvexity but has rarely been discussed. We devise an equivalent reformulation for classical LCC station models that facilitates second-order cone convex relaxation for the OPF of LCC-based AC-DC power grids. We also propose sufficient conditions for exactness of convex relaxation with its proof. Equivalence of the proposed LCC station models and properties, exactness, and effectiveness of convex relaxation are verified using four numerical simulations. Simulation results demonstrate a globally optimal solution of the original OPF can be efficiently obtained from relaxed model. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
