Incorporating Branch Utilization Uniformity into Distributed Generation Planning for Radial Distribution Networks

Trieu Ngoc Ton

doi:10.55927/ijar.v5i6.16701

Authors

Trieu Ngoc Ton Thu Duc College of Technology, Thu Duc, Ho Chi Minh City

DOI:

https://doi.org/10.55927/ijar.v5i6.16701

Keywords:

Branch Loading Balance Index, Distribution Network, HHO, Voltage Regulation, Distributed Generation, Power Loss Minimization

Abstract

Distributed generation (DG) integration is widely recognized as an effective means of enhancing the operation of radial distribution networks. Nevertheless, most existing planning approaches concentrate on reducing power losses and improving voltage conditions, while the uniformity of feeder loading is often overlooked. This study introduces a Branch Loading Balance Index (BLBI) and incorporates it into a multi-objective DG planning framework. The optimization model simultaneously considers active power loss, voltage deviation, and branch loading distribution. Harris Hawks Optimization (HHO) is employed to identify suitable DG locations and capacities, whereas network performance is evaluated using the backward/ forward sweep load-flow method. The proposed framework is tested on the 33-bus and 69-bus systems and compared with several benchmark techniques. Results show that active power loss is reduced from 202.67 kW to 72.85 kW in the 33-bus system and from 224.98 kW to 71.83 kW in the 69-bus system. In addition, the minimum bus voltage improves to 0.9704 p.u. and 0.9784 p.u., respectively. The lowest BLBI values are also achieved, indicating a more balanced utilization of feeder branches. These findings demonstrate the suitability of the proposed approach for DG planning in modern distribution networks.

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