Résumé
This paper deals with the sizing of community-based battery energy storage systems aimed at providing primary frequency regulation support while achieving the goal of local self-consumption maximization. The proposed approach aims to increase the joint flexibility services to distribution and transmission networks. Managing multiple resources to provide coordinated services at different voltage levels is a prominent topic in modern power systems since it allows sustainable integration of a large share of renewables. The system’s sizing procedure requires identifying the control strategy the battery is supposed to follow. In this regard, a new approach is proposed based on a two-step control procedure for coordinating the needs of the local resources and the transmission system. The sizing approach incorporates the proposed control which permits properly including the income derived from both the services, the costs to be sustained in case of unavailability of adequate energy reserve and those due to battery ageing. The sizing formulation is included in a probabilistic procedure that considers planning uncertainties.