1 research outputs found
Towards Phase Balancing using Energy Storage
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