Method and device for monitoring vibrations of the winding overhang in a generator
AssigneeSiemens Aktiengesellschaft
InventorsChristian Kreischer, Timot Veer
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Abstract
A method for monitoring vibrations of the winding overhang in a generator (2) comprises the following steps:—detection of vibrations of the winding overhang (15) during the operation of the generator;—transformation of signals of the vibrations into the frequency range;—transformation of multiple individual vibrations from the frequency signals into the modal range; and—determination of deviations of the modal forms and/or individual bar vibrations in relation to a reference response.
Claims16
A method for monitoring vibrations of a winding overhang in a generator, comprising the following steps:
- detecting vibrations of the winding overhang during the operation of the generator with a sensor;
- transforming vibration signals representative of the vibrations that are received from the sensor into a frequency range;
- transforming multiple individual vibration signals from the frequency range into a modal range;
- and
- determining deviations of modal forms or individual rod in relation to a reference response based on vibration signals in the modal range.
A device for monitoring vibrations of a winding overhang in a generator, having at least one vibration sensor for detecting vibrations of the winding overhang, and an evaluation unit for evaluating signals from the sensor, wherein the evaluation unit has a modal transformer configured to transform multiple individual ones of the vibration signals into a modal range and a comparator configured to determine deviations of the modal forms and/or individual rod vibrations in relation to a reference response.
Dependencies are inferred from the claim text.