Daily and Weekly Operation of Battery Energy Storage Systems in Networks with High Photovoltaic Generation Penetration: A Comprehensive Analysis

Abstract

This research conducts a comparative analysis of Battery Energy Storage System (BESS) operation in distribution networks experiencing high levels of Photovoltaic generation. The analysis considers daily and weekly operations on an hourly basis. A multi-period modelling approach is used, involving temporal coupling of BESS charging and discharging. The model, implemented in AMPL and solved using the Knitro solver, was validated in a recent work. The convergence process occurs quickly, completing in less than one second, although the problem has been split into 168 hours for analysis. During the analysis period, all network and BESS constraints have been considered. The findings indicate that weekly BESS operation proves more effective than daily operation, achieving up to a 30.06\% reduction in comparison to a network without BESSs, and 8.17\% reduction when compared to daily operations, for the analyzed case. The algorithm is fast, taking less than 1 second to obtain the weekly schedule for the BESSs.