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arXiv · 2002.04177

Towards Phase Balancing using Energy Storage

Md Umar Hashmi·José Horta·Lucas Pereira·Zachary Lee·Ana Bušić·Daniel Kofman
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Abstract

Ad-hoc growth of single-phase-connected distributed energy resources, such as solar generation and electric vehicles, can lead to network unbalance with negative consequences on the quality and efficiency of electricity supply. Case-studies are presented for a substation in Madeira, Portugal and an EV charging facility in Pasadena, California. These case studies show that phase imbalance can happen due to a large amount of distributed generation (DG) and electric vehicle (EV) integration. We conducted stylized load-flow analysis on a radial distribution network using an openDSS-based simulator to understand such negative effects of phase imbalance on neutral and phase conductor losses, and in voltage drop/rise. We evaluate the integration of storage in the distribution network as a possible solution for mitigating effects caused by imbalance. We present control architectures of storage operation for phase balancing. Numerically we show that relatively small-sized storage (compared to unbalance magnitude) can significantly reduce network imbalance. We identify the end node of the feeder as the best location to install storage.

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Md Umar Hashmi, José Horta, Lucas Pereira, Zachary Lee, Ana Bušić, Daniel Kofman. 2020-02-11. Towards Phase Balancing using Energy Storage. https://arxiv.org/abs/2002.04177

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