Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Michael Winkel

Andreas Schmidt

Martin Bennauer

Martin Ophey

Christoph Schindler

David Veltmann

Marc Borowski

Marc Diefenbach

Marcel Langer

Dennis Schlüter

Michael Schütz

Martin Berning

Patrick Müller

A method for operating a steam turbine where steam turbine has at least two sub-turbines, wherein the steam turbine is paired with a steam turbine controller which has a sub-turbine controller for each of the sub-turbines, and each sub-turbine controller compares respective target values with respective actual values of the respective sub-turbine during operation in order to determine a respective control deviation for each sub-turbine.

Steam turbine control

A method for coupling a first sub-shaft, which has a first turbomachine and a generator connected to a mains supply, to a second sub-shaft, which has a second turbomachine, by means of an overrunning clutch, has the following steps: a) rotating the second sub-shaft with a starting rotational speed which is lower than the rotational speed of the first sub-shaft; b) measuring the mains frequency of the mains supply; c) measuring a differential angle between the first sub-shaft and the second sub-shaft; d) accelerating the second sub-shaft with an acceleration value which is produced using the mains frequency measured in step b), the differential angle and the starting rotational speed, and therefore the overrunning clutch couples the two sub-shafts to each other with a previously determined target coupling angle.

Method for coupling two sub-shafts

A method for coupling a gas turbine connected to a generator and a steam turbine, wherein the generator has an excitation winding, the excitation of which can be changed by changing an excitation current flowing through the excitation winding, the method having the following steps: a) accelerating and/or decelerating the steam turbine in such a way that the coupling takes place with a target coupling angle; b) if necessary, changing the excitation current such that the excitation of the excitation winding changed in this way leads to a changed polar wheel angle, wherein the polar wheel angle is changed in such a way that the achieving of the target coupling angle is supported. In an analogous method, the polar wheel angle is changed for the purposes of improved decoupling. A corresponding control device is for coupling a gas turbine connected to a generator.

Coupling a gas turbine and a steam turbine with a target coupling angle by adjusting the polar wheel angle

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Dorsten, Germany

Michael Winkel