Power supply arrangement has control device that is provided with inverter for providing real power and reactive power, and control unit that is provided for monitoring terminal voltage of electrical energy accumulator

摘要

The power supply arrangement has a control device (4) that is provided with terminal for an external power grid (6), terminal for an utilizable load (15) and an inverter (16). The inverter is arranged for providing real power and reactive power. A control unit (12) is provided for monitoring the terminal voltage of an electrical energy accumulator (2) and current flow to or from the electrical energy accumulator. An independent claim is included for a method for fast switching from a parallel operation mode to a stand-alone operation mode in a power supply arrangement.