ANALYSIS OF BATTERY ENERGY STORAGE MANAGEMENT IN LOW-VOLTAGE CONSUMER AGGREGATION ZONES

Abstract

The opening of the energy market has been encouraged in several countries. In extensive distribution networks, the aggregation of consumers can create a competitive market that benefits consumersand distribution companies. Consumers with photovoltaic systems can see a more significant decrease in their electricity bills if they install battery energy storage systems in their homes. However, small-scale battery storage systems are still expensive, making them unfeasible for some consumers. The economic viability of battery energy storage systems becomes favorable when the system’s power is increased. Thus, a centralized battery energy storage system in an aggregation zone may reduce energy billing better. This work analyzes the management of aggregation zones with distributed and centralized battery energy storage systems. A mixed integer linear optimization model was used to reduce the energy purchased from the distribution company, using the type of battery energy storage system installed and hourly rates. The analysis was carried out on a low-voltage network in Denmark with 45 consumers, four aggregation zones and four different cases. The results show an average variation of 23.38% in energy credits concerning the centralized battery system. This information can help the representative of the aggregation zone to make their decisions.