Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Georg Pilz

Peter Schegner

Ralph Morgenstern

Thomas Hammer

Peter Hamberger

Matthias Kuestermann

Thomas Manthe

Ronny Fritsche

Christian Wallner

Markus Wiesinger

Andreas Haselbauer

Patrik Ernst

Bernd Niemann

Florian Bachinger

Juergen Lottes

Oliver Bitter

Clemens Keplinger

Jürgen Lottes

In order to create a full variable shunt reactor having two magnetically controllable high-voltage throttles which is compact and at the same time can also provide capacitive reactive power, auxiliary windings are used which are inductively coupled to the high-voltage throttles. The auxiliary windings are connected to at least one capacitively acting component.

Magnetically controllable throttle for reactive power compensation having capacitively connected auxiliary windings

A system for stabilizing an alternating voltage grid has an inverter, which can be connected to the alternating voltage grid, and is configured to exchange reactive power with the alternating voltage grid. The system further has an inductor arrangement with variable inductor coils, which can be connected to the alternating voltage grid, and a control device, which is configured to control a reactive power in the alternating voltage grid by use of the inverter and by use of the inductor arrangement.

System and method for stabilizing an alternating voltage grid

A system for compensating one or more DC components in an electrical system includes one or more sensors for sensing the one or more DC components. The system also includes one or more DC component controllers for generating one or more reference signals from one or more signals received from the one or more sensors. In addition to this, the system also has one or more controllers for generating one or more firing pulses from the one or more reference signals received from the one or more DC component controllers and one or more valve configurations for charging one or more controllable branches to counterbalance the one or more DC components of the electrical system. A method for compensating one or more DC components in an electrical system is also provided.

DC compensation for high DC current in transformer

A method and a device for determining a switching time of an electric switching device. An electric switching device includes an interrupter link. A first line section and a second line section can be connected and disconnected by way of the interrupter link. In order to determine a switching time, the temporal progression of a driving voltage is determined in the first line section. In addition, a temporal course of an oscillator voltage appearing in the second line section is determined. Potential switching times are determined at the voltage zero crossings of a resulting voltage. The selection of the potential switching times ensues while evaluating the rises of the driving voltage and of the oscillator voltage or of the polarity of the oscillating current.

Method and apparatus for determining a switching time for an electrical switching device

According to the invention, a controlled or synchronous switching of an electrical power breaker () can be guaranteed by means of predicting a future voltage and/or current curve from actual voltage and/or current data in an electrical energy network (). The prediction of the future voltage and/or current curve is carried out using the voltage and/or current data determined in the electrical network () at different timepoints by application of a Prony method to the available voltage and/or current data.

Method for predicting a future voltage and/or current curve

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Poxdorf, Germany

Georg Pilz