In the recent years, the share of electricity production from solar photovoltaic (PV) and consumption of electric vehicles (EVs) have increased to significant levels in several power systems across Europe and the Netherlands. In order to improve the energy supply security, large-scale battery energy storage systems (BESS) are considered as vital means to provide backup resources and to effectively exploit solar generation. A smart coordination of these BESS is hence required to ensure the power quality while the lifetime of BESS is extended. This paper addresses the voltage issue of a Dutch DSO (Alliander N.V.) medium voltage network around the Amsterdam Arena stadium and studies the potential solutions that could apply to the BESS to be installed in the year 2018 at Arena. Detailed models of system and controllers are verified by real-time power system emulator Opal-RT and DIgSILENT/Power Factor while the effectiveness of potential solutions is assessed using actual operation network topology and historical customer electric loads and solar irradiance.