Abstract: In a method for operating an electrical energy storage system, which is connected to an electrical energy supply grid for providing a setpoint power and contains a plurality of storage units, which are electrically connected at a point of common coupling PCC and among which the setpoint power is distributed, the total efficiency of the energy storage system is matched to the setpoint power by adjusting individual power components to be provided by the storage units.

Abstract: In a method for controlling the state of charge (SOC) of a battery power plant (1), which for controlling at least one physical quantity (P, f) is connected to an electric energy distribution network (2), the state of charge (SOC) of the battery power plant (1) is detected for at least one physical quantity (P, f) of the energy distribution network (2) with a detection speed and/or detection accuracy which are greater than specified limit values for a minimum detection speed and detection accuracy of the physical quantity (P, f), and the electric power transfer between the battery power plant (1) and the energy distribution network (2) is determined by taking account of the difference between the actual and the specified control speed and control accuracy of the physical quantity (P, f) to be controlled as well as a difference between the actual and the specified height and rate of change of the power transfer between the battery power plant (1) and the energy distribution network (2).

Abstract: In a method for operating an electrical energy storage system, which is connected to an electrical energy supply grid for providing a setpoint power and contains a plurality of storage units, which are electrically connected at a point of common coupling PCC and among which the setpoint power is distributed, the total efficiency of the energy storage system is matched to the setpoint power by adjusting individual power components to be provided by the storage units.

Abstract: In a method for storing electric energy in electrochemical energy accumulators and for exchanging electric energy with an electric energy distribution network via a power electronic system connecting the electrochemical energy accumulators with the electric energy distribution network the specific data and features of the electrochemical energy accumulators 2.1-2.N and the topology of the power electronic system 4.1-4.N; 31.M; 31.N, 32.N are transferred into data and features specific for the electric energy distribution network 11. A corresponding apparatus contains at least one base module or AC batteries 1.1-1.N with DC batteries 2.1-2.N having the same chemical and/or physical properties, a battery management system 20.1-20.N controlling and monitoring the DC batteries 2.1-2.N, a power electronic module 4.1-4.N, 31.N, 32.N, a power electronic module control means 40.1-40.N and an AC battery management 5.1-5.N with communication interfaces 15 to the battery management system 20.1-20.N.

Abstract: In a method for controlling the state of charge (SOC) of a battery power plant (1), which for controlling at least one physical quantity (P, f) is connected to an electric energy distribution network (2), the state of charge (SOC) of the battery power plant (1) is detected for at least one physical quantity (P, f) of the energy distribution network (2) with a detection speed and/or detection accuracy which are greater than specified limit values for a minimum detection speed and detection accuracy of the physical quantity (P, f), and the electric power transfer between the battery power plant (1) and the energy distribution network (2) is determined by taking account of the difference between the actual and the specified control speed and control accuracy of the physical quantity (P, f) to be controlled as well as a difference between the actual and the specified height and rate of change of the power transfer between the battery power plant (1) and the energy distribution network (2).