Abstract: A method in a controller controlling a dynamic power compensator. The dynamic power compensator is arranged to provide active and reactive power to an electric power system, the dynamic power compensator including a battery energy storage. The method includes the steps of: monitoring a state of charge of the battery energy storage; detecting a voltage level in the electric power system requiring increased delivery of the reactive power to the electric power system; and controlling the battery energy storage in dependence on the monitored state of charge and detected voltage level. The invention also relates to a controller, computer programs and computer program products.

Abstract: A method in a controller controlling a dynamic power compensator. The dynamic power compensator is arranged to provide active and reactive power to an electric power system, the dynamic power compensator including a battery energy storage. The method includes the steps of: monitoring a state of charge of the battery energy storage; detecting a voltage level in the electric power system requiring increased delivery of the reactive power to the electric power system; and controlling the battery energy storage in dependence on the monitored state of charge and detected voltage level. The invention also relates to a controller, computer programs and computer program products.

Abstract: A system for generating electric energy from renewable energy sources such as waves includes a plurality of generator aggregates (4a-6c) arranged in the sea and a plurality of switchgears (1a-1c) arranged in the sea. Each switchgear (1a-1c) is connected to a plurality of the generator aggregates (4a-6c). A plurality of primary intermediate stations (17a-17c) are respectively connected to a plurality of the switchgears, and a secondary intermediate station (19) is connected to a plurality of the primary intermediate stations (17a-17c). The secondary intermediate station is also connected to a land based electric network. Switching means (192) is present for allowing selective connection to various locations (193, 194, 195) in the electric network.

Abstract: The invention relates to a system for generating electric energy from renewable energy sources. The system includes a plurality of generator aggregates (4a-6c) arranged in the sea and a plurality of switchgears (1a-1c) arranged in the sea. Each switchgear (1a-1c) is connected to a plurality of the generator aggregates (4a-6c). According to the invention the system includes a plurality of primary intermediate stations (17a-17c). The system also includes at least one secondary intermediate station (19). Each primary intermediate station (17a-17c) is connected to a plurality of the switchgears and each secondary intermediate station (19) is connected to a plurality of the primary intermediate stations (17a-17c). The secondary intermediate station is also connected to a land based electric network. Switching means (192) is present for allowing selective connection to various locations (193, 194, 195) in the electric network.

Abstract: A superconducting magnetic energy storage (SMES) device including a first coil made of superconducting material, a cooling mechanism for cooling the first coil to superconducting temperatures, a second coil inductively coupled to the first coil for inputting emergy to, and/or outputting energy from, the first coil, and a switch for switching the first coil between a superconducting condition and a non-superconducting condition. The first coil is arranged as a closed loop electric circuit having no connecting device mechanically connected to it for inputting or outputting energy. The switch includes a third coil for the application or removal of a magnetic field for switching the first coil between its non-superconducting and superconducting conditions. A method inputs energy to and/or outputs energy from the first coil and a power supply system utilizes the device and method.

Abstract: A superconducting magnetic energy storage (SMES) device (1) comprising a first coil (2) made of superconducting material, cooling means (3) for cooling the first coil to superconducting temperatures, a second coil (4) inductively coupled to the first coil (2) for inputting energy to, and/or outputting energy from, the first coil (2), and switching means (5) for switching the first coil (2) between a superconducting condition and a non-superconducting condition. The first coil (2) is arranged as a closed loop electric circuit having no connecting means mechanically connected to it for inputting or outputting energy. The switching means (5) comprises a third coil for the application or removal of a magnetic field for switching the first coil (2) between its non-superconducting and superconducting conditions. The invention also relates to a method of inputting energy to and/or outputting energy from the first coil (2) and to a power supply system.