Abstract: A method for detecting an imminent pole slip of a synchronous generator electrically connected to a power supply network, whereby a signal characteristic of a power fault is detected and an imminent pole slip is determined via a predefinable value when a load angle of the synchronous generator increases, whereby the following steps are performed. Determination of a first load angle during operation without a power fault, determination of a generator frequency as a function of time when a power fault occurs, and precalculation of a second value of a load angle resulting from the power fault by adding the first value of the load angle to a load angle difference occurring during the power fault, whereby this load angle difference is caused by a deviation of a generator frequency relative to a power frequency.

Abstract: A method for detecting an imminent pole slip of a synchronous generator electrically connected to a power supply network, whereby a signal characteristic of a power fault is detected and an imminent pole slip is determined via a predefinable value when a load angle of the synchronous generator increases, whereby the following steps are performed. Determination of a first load angle during operation without a power fault, determination of a generator frequency as a function of time when a power fault occurs, and precalculation of a second value of a load angle resulting from the power fault by adding the first value of the load angle to a load angle difference occurring during the power fault, whereby this load angle difference is caused by a deviation of a generator frequency relative to a power frequency.

Abstract: A method involves operating an internal combustion engine connected to an electric generator, in particular a synchronous generator, during a network fault, in particular during an electric short-circuit, in a power supply network connected to the generator. A mechanical power delivered by the internal combustion engine is introduced into the generator and converted into electric power in the generator. The electric power is delivered to the power supply network, and the mechanical power delivered by the internal combustion engine is at least temporarily increased depending on the value of at least one operating parameter of the generator and/or the internal combustion engine prior to the network fault and/or during the network fault, preferably by an amount of a fuel introduced into the internal combustion engine being increased.

Abstract: In a method of operating a stationary power plant connected to a power supply network, wherein upon the occurrence of a dynamic network fault in the power supply network, (in particular an electric short-circuit), at least one fault value is ascertained depending on a state value of at least one operating parameter of the power plant. The at least one fault value is associated with at least one component of the power plant, and a maintenance signal for the at least one component of the power plant is output depending on the at least one fault value.

Abstract: In a method of operating a generator connected to a power supply network, in particular a synchronous generator, during a network fault in the power supply network, in particular during an electric short-circuit, electric excitation of the generator is at least temporarily reduced based on the value of at least one operating parameter of the generator prior to the network fault and/or during the network fault.

Abstract: A system for cooling a dynamoelectric machine is provided. The system includes a coolant medium inlet, a coolant medium outlet and a fan connected to a rotor of the dynamoelectric machine, The system further includes a flow control device configured to control the amount of the coolant medium passing through the dynamoelectric machine by controlling an opening area of at least one of the coolant medium inlet and the coolant medium outlet. The system further includes a winding temperature measurement system configured to measure the temperature of one or more windings in the dynamoelectric machine, and control the flow control device by adjusting the opening area of at least one of the coolant medium inlet and the coolant medium outlet based on the temperature of the windings in the dynamoelectric machine to at least one of reduce windage loss and control coolant medium pressure within the dynamoelectric machine.

Abstract: The invention relates to a method for operating a stationary power plant, wherein a fuel/air mixture is burned in an internal combustion engine and wherein the internal combustion engine drives an alternating current generator, which is connected to an energy supply network and provides energy to the energy supply network, wherein if the actual rotational speed of the alternating current generator or of the internal combustion engine exceeds a predefinable maximum value due to a failure of the energy supply network, the combustion in the internal combustion engine is stopped at least partially, while the connection to the energy supply network is maintained.

Abstract: A method of operating a generator connected to a power supply network, in particular a synchronous generator, during a network fault in the power supply network, in particular during an electric short-circuit, wherein electric excitation of the generator is at least temporarily reduced in dependence on the value of at least one operating parameter of the generator prior to the network fault and/or during the network fault.

Abstract: A method of operating an internal combustion engine connected to an electric generator, in particular a synchronous generator, during a network fault, in particular during an electric short-circuit, in a power supply network connected to the generator, wherein a mechanical power delivered by the internal combustion engine is introduced into the generator and converted into electric power in the generator, wherein the electric power is delivered to the power supply network, wherein the mechanical power delivered by the internal combustion engine is at least temporarily increased in dependence on the value of at least one operating parameter of the generator and/or the internal combustion engine prior to the network fault and/or during the network fault, preferably by an amount of a fuel introduced into the internal combustion engine being increased.

Abstract: A method of operating a stationary power plant connected to a power supply network, wherein upon the occurrence of a dynamic network fault in the power supply network, in particular an electric short-circuit, at least one fault value is ascertained in dependence on a state value of at least one operating parameter of the power plant wherein the at least one fault value is associated with at least one component of the power plant, wherein a maintenance signal for the at least one component of the power plant is output in dependence on the at least one fault value.

Abstract: Method of operating a generator set, comprising a combustion engine with a drive shaft coupleable with a generator to supply electrical power, and at least one internal appliance coupleable to the drive shaft creating resistance to the drive shaft, particularly a fan, wherein a rotary speed of the drive shaft and/or a voltage and/or a frequency from the generator is monitored, wherein the resistance of the at least one internal appliance to the drive shaft is at least temporarily reduced when the rotation speed of the drive shaft and/or the voltage and/or the frequency from the generator drops below a predefinable threshold.

Abstract: The invention relates to a method for operating a stationary power plant, wherein a fuel/air mixture is burned in an internal combustion engine and wherein the internal combustion engine drives an alternating current generator, which is connected to an energy supply network and provides energy to the energy supply network, wherein if the actual rotational speed of the alternating current generator or of the internal combustion engine exceeds a predefinable maximum value due to a failure of the energy supply network, the combustion in the internal combustion engine is stopped at least partially, while the connection to the energy supply network is maintained.