Methodology to Analyse the Feasible Use of Battery Energy Storage Systems as Part of Electricity Distribution Network Asset Management

ABSTRACT Battery energy storage systems (BESS) have become a part of electrical power systems, especially in providing system services. In addition, storage systems offer many benefits also for the electricity distribution network operation, even though they are not yet widely utilised. In this paper, a methodology to assess the feasible use of BESS in the continuous distribution network development and asset management process is developed. The methodology determines alternative paths for the network development, considering the present network structure, requirements for the network operation, and the life cycle cost analysis, including capital, operational, and interruption costs of the network. Network development cases where BESS can be beneficial include a rapid improvement in network capacity and securing electricity supply against network fault interruptions. The analysis focuses on the renovation of a rural overhead line network, but the methodology is generic and can also be applied to urban areas.