US 12,092,512 B2
Method for measuring the vibration behaviour of a drivetrain of a turboset comprising a generator in a power plant connected to an energy supply network
Achim Degenhardt, Erlangen (DE)
Assigned to Siemens Energy Global GmbH & Co., KG, Munich (DE)
Appl. No. 17/784,008
Filed by Siemens Energy Global GmbH & Co. KG, Bayern (DE)
PCT Filed Dec. 14, 2020, PCT No. PCT/EP2020/086023
§ 371(c)(1), (2) Date Jun. 9, 2022,
PCT Pub. No. WO2021/122476, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 10 2019 219 857.0 (DE), filed on Dec. 17, 2019.
Prior Publication US 2023/0017585 A1, Jan. 19, 2023
Int. Cl. G01H 1/10 (2006.01); G01H 13/00 (2006.01); H02P 9/10 (2006.01)
CPC G01H 1/10 (2013.01) [G01H 13/00 (2013.01); H02P 9/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for measuring vibration behavior of a drivetrain of a turboset comprising a generator in a power plant connected to an energy network, wherein the method comprises:
a) selecting excitation signals, wherein a frequency spectrum of the selected excitation signals contains frequencies of up to at least 15 Hz,
b) influencing a field current of the generator using the excitation signals selected in step a) in such a manner that mechanical vibrations are excited in the turboset,
c) capturing the excited mechanical vibrations, including resonant vibrations, by measuring at least one suitable output variable,
d) computationally determining a transfer function from the excitation signal to the output variable measured in step c), and
e) computationally determining the transfer function from a generator torque to a desired output variable using known transfer functions from the excitation signal used in step b) to a desired input variable and/or from the desired output variable to the output variable measured in step c) on the basis of the transfer function determined in step d).