Battery Energy Storage for Distribution System – Case Helsinki

Battery energy storage systems can be exploited for manifold tasks set by various stakeholders. Managing power quality in an electricity distribution network is one application for a battery energy system. This paper presents results how an industrial-sized battery energy storage has been tested in an urban distribution network in order to improve local power quality. The power quality cases are compensation of reactive power in a distribution area and two cases of moderating rapidly altering electricity usage: a metro train load and a production of a solar power plant. The studied cases were technically successful.