Details
| Original language | English |
|---|---|
| Pages (from-to) | 139388-139403 |
| Number of pages | 16 |
| Journal | IEEE ACCESS |
| Volume | 13 |
| Publication status | Published - 7 Aug 2025 |
Abstract
Keywords
- active distribution grids, Aggregated flexibilities, convexification, feasible operating region, grid operational management, mixed-integer linear programming, PQ-capability
ASJC Scopus subject areas
- Computer Science(all)
- General Computer Science
- Materials Science(all)
- General Materials Science
- Engineering(all)
- General Engineering
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In: IEEE ACCESS, Vol. 13, 07.08.2025, p. 139388-139403.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Aggregated Distribution Grid Flexibilities in the Overlaying Grid Operational Management
AU - Majumdar, Neelotpal
AU - Hofmann, Lutz
N1 - Publisher Copyright: © 2013 IEEE.
PY - 2025/8/7
Y1 - 2025/8/7
N2 - Distribution grid aggregated flexibilities or PQ-capabilities (active and reactive power capabilities) are termed in literature as Feasible Operating Regions (FORs). The FORs from underlying active distribution grids can effectively contribute to the operational management at the HV grid level. The HV buses are allocated aggregated FORs from the underlying MV grids, which are inherently nonlinear and non-convex. Therefore, two approaches are proposed in the paper to apply the FOR constraints in the HV grid operational management. First, a mixed integer linear programming (MILP) based optimization approach for alleviating the HV grid constraint violations is proposed, which addresses the non-convexity of the FOR using piecewise segmentation. Furthermore, the MILP method is enhanced to consider the influence of the HV bus voltage on the underlying MV grid flexibilities resulting in a 3D PQ(V)-FOR. Second, a convexification approach is proposed, which uses a convex approximation of the non-convex 3D PQ(V)-FOR for implementation in a linear optimization method. Results reveal a robust utilization of the distribution flexibilities to maintain grid security and reliability at the HV grid level. Comparisons present significantly reduced computation times for the convexification method.
AB - Distribution grid aggregated flexibilities or PQ-capabilities (active and reactive power capabilities) are termed in literature as Feasible Operating Regions (FORs). The FORs from underlying active distribution grids can effectively contribute to the operational management at the HV grid level. The HV buses are allocated aggregated FORs from the underlying MV grids, which are inherently nonlinear and non-convex. Therefore, two approaches are proposed in the paper to apply the FOR constraints in the HV grid operational management. First, a mixed integer linear programming (MILP) based optimization approach for alleviating the HV grid constraint violations is proposed, which addresses the non-convexity of the FOR using piecewise segmentation. Furthermore, the MILP method is enhanced to consider the influence of the HV bus voltage on the underlying MV grid flexibilities resulting in a 3D PQ(V)-FOR. Second, a convexification approach is proposed, which uses a convex approximation of the non-convex 3D PQ(V)-FOR for implementation in a linear optimization method. Results reveal a robust utilization of the distribution flexibilities to maintain grid security and reliability at the HV grid level. Comparisons present significantly reduced computation times for the convexification method.
KW - active distribution grids
KW - Aggregated flexibilities
KW - convexification
KW - feasible operating region
KW - grid operational management
KW - mixed-integer linear programming
KW - PQ-capability
UR - http://www.scopus.com/inward/record.url?scp=105013153336&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2025.3596884
DO - 10.1109/ACCESS.2025.3596884
M3 - Article
VL - 13
SP - 139388
EP - 139403
JO - IEEE ACCESS
JF - IEEE ACCESS
SN - 2169-3536
ER -