Open AccessA new AC OPF tool for sub‐transmission networks considering distribution switching actions and load‐transferring capability
Author(s) -
Tavakkoli Mohammad Ali,
Amjady Nima
Publication year - 2019
Publication title -
international transactions on electrical energy systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 42
ISSN - 2050-7038
DOI - 10.1002/2050-7038.12029
Subject(s) - power flow , transmission (telecommunications) , power (physics) , computer science , point (geometry) , ac power , transmission system , control theory (sociology) , electric power system , mathematical optimization , reliability engineering , engineering , voltage , electrical engineering , telecommunications , mathematics , control (management) , physics , geometry , quantum mechanics , artificial intelligence
In practical power systems, in order to study the results of optimal power flow (OPF) for a sub‐transmission network (STN), the downstream primary distribution network is usually modeled as constant load. However, in practical distribution grids, the operators are constantly transferring load from one primary distribution feeder to another one because of, eg, congestion problems or maintenance plans. Considering distribution switching actions can improve the performance of sub‐transmission OPF tool that typically aims at reducing the operation cost of STN. This paper presents a new sub‐transmission Alternating Current (AC) OPF (ST‐AC‐OPF) considering load transferring (LT) between primary distribution feeders implemented through distribution maneuvers. The proposed OPF tool is tested on an illustrative practical example as well as on a real‐world Tehran STN. The numerical results show that the proposed model can obtain a more optimal operating point than conventional ST‐AC‐OPF in terms of the operation cost and load shedding.