Battery Storage System sizing in distribution feeders with distributed photovoltaic systems

This paper presents a procedure for sizing a Battery Energy Storage System (BESS) for the purposed of shaving the peak demand of a residential distribution feeder. The BESS power and energy storage rating are determined from actual load demand data and desired level of peak reduction using the load following method. The impact of distributed photovoltaic (PV) power generation (to be installed by residential customers) on the feeder load curve, and on the BESS sizing is explored. It is determined that while PV installations have no impact on the BESS power rating, they reduce its energy storage capacity in proportion with the PV penetration level.