Risk-aware distributed optimal power flow in coordinated transmission and distribution system

A Nawaz, H Wang - Journal of Modern Power Systems and …, 2021 - ieeexplore.ieee.org
A Nawaz, H Wang
Journal of Modern Power Systems and Clean Energy, 2021ieeexplore.ieee.org
Active distribution grids cause bi-directional power flow between transmission system (TS)
and distribution system (DS), which not only affects the optimal cost but also the secure
operation of the power system. This paper proposes a hybrid coordination method to solve
the risk-aware distributed optimal power flow (RA-DOPF) problem in coordinated TS and
DS. For operation risk evaluation, the weather-based contingencies are considered in both
TS and DS. A hybrid coordination method is developed that entails analytical target …
Active distribution grids cause bi-directional power flow between transmission system (TS) and distribution system (DS), which not only affects the optimal cost but also the secure operation of the power system. This paper proposes a hybrid coordination method to solve the risk-aware distributed optimal power flow (RA-DOPF) problem in coordinated TS and DS. For operation risk evaluation, the weather-based contingencies are considered in both TS and DS. A hybrid coordination method is developed that entails analytical target cascading (ATC) and Benders decomposition (BD). Moreover, the risk-aware optimal power flow (RAOPF) in TS and risk-based security-constrained optimal power flow in DS have been performed using the BD method considering basic optimal power flow as a master problem, whereas and contingencies are considered as sub-problems. Different case studies are performed using the IEEE 30-bus system with generation reserves as a TS and a 13-bus system as a DS. The results demonstrate the efficacy of the proposed method.
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