Abstract: An arrangement is for compensating voltage drops in a power supply network. The arrangement includes at least one first converter system and a second converter system. The intermediate circuits thereof are coupled, and the first converter system is connected to a first distribution and the second converter system is connected to a second distribution.

Abstract: An exemplary power system includes a DC power bus and a photovoltaic system connected to the DC power bus. An energy storage system is connected to the DC power bus and stores energy injected to the DC power bus by the photovoltaic system. A power inverter is connected to the DC power bus and converts power between the DC power bus and an AC connected load. The power system also includes a control system that receives power system data from one or more sub-systems and devices connected to the DC power bus, and controls, in real-time, one or more of the power inverter and the energy storage system to act as a load on the DC power bus based on the received power system data.

Abstract: An exemplary power system includes a DC power bus and a photovoltaic system connected to the DC power bus. An energy storage system is connected to the DC power bus and stores energy injected to the DC power bus by the photovoltaic system. A power inverter is connected to the DC power bus and converts power between the DC power bus and an AC connected load. The power system also includes a control system that receives power system data from one or more sub-systems and devices connected to the DC power bus, and controls, in real-time, one or more of the power inverter and the energy storage system to act as a load on the DC power bus based on the received power system data.

Abstract: A battery cell performance monitoring system includes an energy storage system that includes at least one inverter and battery nodes. Each of the battery nodes includes battery racks, and each of the battery racks includes battery cells. The battery cell performance monitoring system also includes a processor, memory, and programming in the memory. The programming causes the battery cell performance monitoring system to determine an extreme rack cell voltage value of each battery rack. Next, to determine an average extreme rack cell voltage value based on the extreme rack cell voltage value of each battery rack. Further, to compare an extreme rack cell voltage value for each battery rack with the average extreme rack cell voltage value. Additionally, to identify one or more outlier battery racks based upon the comparison of the extreme rack cell voltage value for each battery rack with the average extreme rack cell voltage value.

Abstract: A method for predictive monitoring of the condition of wind turbines is disclosed. The method may include selecting at least one wind turbine inside a wind farm and at least one component of the wind turbine; acquiring SCADA data comprising operational data of the wind farm and temperature values of the at least one component of the wind turbine during a preselected time period, calculating differential data as a difference between the temperature values of the selected turbine component of the selected wind turbine and an average temperature of the selected wind turbine component in at least two wind turbines in the wind farm; defining a monitoring time period to monitor the component; calculating at least one predetermined statistic of the differential data during the monitoring time period, and saving the predetermined statistic as a monitoring feature; and testing if at least one monitoring feature exceeds a threshold value.

Abstract: An embodiment relates to an arrangement for equalizing voltage drops in a power supply mains having a first mains supply and a second mains supply. The arrangement includes at least one first converter system and one second converter system, to which intermediate circuits are coupled and which form a mains coupling as a result. The first mains supply is connected to a distributor via a decoupling inductor, a voltage measurement and a first switch. The second mains supply is connected to the distributor via a second switch, and wherein the mains coupling is arranged parallel to the second switch.

Abstract: An uninterruptible power supply (UPS) for a three-phase alternating current network, in particular a medium-voltage network, includes an energy storage system, a switch, an LC resonant circuit, which is a series circuit of an inductance and a capacitance, and a control unit for controlling the switch. The switch and the LC resonant circuit are connected in series, and the series circuit of the switch and the LC resonant is arranged between a network feed and the energy storage system which is connected to a load. There is also described a method for operating such a UPS and a corresponding computer program.

Abstract: An exemplary power system includes a DC power bus and a photovoltaic system connected to the DC power bus. An energy storage system is connected to the DC power bus and stores energy injected to the DC power bus by the photovoltaic system. A power inverter is connected to the DC power bus and converts power between the DC power bus and an AC connected load. The power system also includes a control system that receives power system data from one or more sub-systems and devices connected to the DC power bus, and controls, in real-time, one or more of the power inverter and the energy storage system to act as a load on the DC power bus based on the received power system data.