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Active-Reactive Optimal Power Flow in Distribution Networks With Embedded Generation and Battery Storage

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2 Author(s)
Gabash, A. ; Dept. of Simulation & Optimal Processes, Ilmenau Univ. of Technol., Ilmenau, Germany ; Pu Li

Due to environmental and fuel cost concerns more and more wind- and solar-based generation units are embedded in distribution networks (DNs). However, a part of such an embedded generation would be curtailed due to system constraints and variations of the energy penetration. This part of energy can be recovered by introducing energy storage systems (ESSs) and an optimal dispatch of both active and reactive powers. Therefore, we propose a combined problem formulation for active-reactive optimal power flow (A-R-OPF) in DNs with embedded wind generation and battery storage. The solution provides an optimal operation strategy which ensures the feasibility and enhances the profit significantly. Results of a 41-bus distribution network are presented. It can be demonstrated that more than 12% of energy losses and a large amount of reactive energy to be imported from the transmission network (TN) can be reduced using the proposed approach in comparison to the operation strategy where only active OPF is considered.

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Power Systems, IEEE Transactions on  (Volume:27 ,  Issue: 4 )