access icon free Optimal integration of DERs in coordination with existing VRs in distribution networks

© The Institution of Engineering and Technology
Received 06/09/2017, Accepted 11/01/2018, Revised 14/12/2017, Published 12/01/2018

Voltage regulation (VR) and energy loss minimisation have always been major concerns for distribution network (DN) operators, thereby many conventional VR schemes are dedicatedly employed in existing DNs. In this study, optimal integration of different distributed energy resources (DERs) is investigated in coordination with existing VR scheme, i.e. on-load tap-changer. To show the superiority of the proposed DER integration model, optimal allocations of different DERs are determined with and without considering the coordinated effect of existing VR schemes for annual energy loss minimisation under different scenarios. To solve this complex optimisation problem, the improved genetic algorithm (GA) is adopted. A dynamic node priority list (DNPL) is suggested to further improve the performance of GA. To validate the proposed strategy and DNPL, the DER integration problem is solved for benchmark 33-bus and real-life 108-bus Indian radial distribution systems. The simulation results are found to be inspiring when compared with the existing optimisation techniques and DER integration models without considering VR schemes.

Inspec keywords: voltage regulators; power distribution control; voltage control; genetic algorithms; optimisation

Other keywords: voltage regulation; genetic algorithm; distributed energy resources; dynamic node priority list; DER integration models; voltage regulators; distribution network

Subjects: Optimisation techniques; Optimisation techniques; Controllers; Distribution networks; Control of electric power systems; Power system control; Voltage control

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