Detecting faults in turbine generators

Qiao, Wei; Gong, Xiang

Title: Detecting faults in turbine generators

Full Record
Other Related Research

Abstract

Turbine generator faults can be detected by receiving a current signal from the turbine generator, and synchronously sampling the current signal to obtain a set of current signal samples that are evenly spaced in the phase domain, in which phase differences between adjacent current signal samples in the set of current signal samples are substantially the same. The process includes generating a frequency spectrum of the current signal samples, identifying one or more excitations in the frequency spectrum, and detecting a fault in the turbine generator based on the one or more excitations in the frequency spectrum.

Inventors:: Qiao, Wei; Gong, Xiang

Issue Date:: 2019-07-23

Research Org.:: NUtech Ventures, Lincoln, NE (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1568632

Patent Number(s):: 10359473

Application Number:: 14/884,558

Assignee:: NUtech Ventures (Lincoln, NE)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

H - ELECTRICITY H02 - GENERATION H02P - CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS

Show more

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
G01R31/343 - {in operation}

H - ELECTRICITY H02 - GENERATION H02P - CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS
H02P29/02 - Providing protection against overload without automatic interruption of supply

F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03D - WIND MOTORS
F03D7/0296 - {to prevent, counteract or reduce vibration or noise}

F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05B - INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
F05B2270/334 - Vibration measurements

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Y02E10/72 - Wind turbines with rotation axis in wind direction

F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03D - WIND MOTORS
F03D17/00 - Monitoring or testing of wind motors, e.g. diagnostics

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
G01R31/42 - AC power supplies

Show less

DOE Contract Number:: EE0001366

Resource Type:: Patent

Resource Relation:: Patent File Date: 10/15/2015

Country of Publication:: United States

Language:: English

Citation Formats


                    Qiao, Wei, and Gong, Xiang. Detecting faults in turbine generators.  United States: N. p., 2019. 
        Web.

Copy to clipboard


                    Qiao, Wei, & Gong, Xiang. Detecting faults in turbine generators.  United States.

Copy to clipboard


                    Qiao, Wei, and Gong, Xiang. Tue .  
        "Detecting faults in turbine generators".  United States.  https://www.osti.gov/servlets/purl/1568632.

Copy to clipboard


                    
@article{osti_1568632,

  title        = {Detecting faults in turbine generators},

  author       = {Qiao, Wei and Gong, Xiang},

  abstractNote = {Turbine generator faults can be detected by receiving a current signal from the turbine generator, and synchronously sampling the current signal to obtain a set of current signal samples that are evenly spaced in the phase domain, in which phase differences between adjacent current signal samples in the set of current signal samples are substantially the same. The process includes generating a frequency spectrum of the current signal samples, identifying one or more excitations in the frequency spectrum, and detecting a fault in the turbine generator based on the one or more excitations in the frequency spectrum.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2019},

  month        = {7}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Detecting faults in wind turbines

Patent Qiao, Wei; Wang, Jun; Qu, Liyan

A wind turbine generator fault detection method is described. The method includes obtaining a first signal from a generator of a wind turbine and a second signal from a vibration sensor coupled to the wind turbine, the first signal representing an output current of the generator, and the second signal being a time-sampled signal representing vibrations of a bearing in the wind turbine. Determining a shaft rotation frequency signal from the first signal, the shaft rotation frequency signal representing a time-varying rotational speed of a shaft of the wind turbine. Resampling an envelope of the second signal based on themore » « less
Full Text Available
Detecting faults in wind turbines

Patent Qiao, Wei; Gong, Xiang

A wind turbine generator fault detection method is described. The method includes acquiring current data from a wind turbine generator during operation, determining frequency demodulated signals and amplitude demodulated signals by frequency demodulating and amplitude demodulating the current data, resampling the frequency and amplitude demodulated signals corresponding to the current data, monitoring a frequency spectra of the resampled frequency and amplitude demodulated signals corresponding to the current data to identify one or more excitations in the frequency spectra. In response to identifying one or more excitations in the frequency spectra at one or more of the variable fault characteristic frequencies,more » « less
Full Text Available
Wind turbine fault detection using acoustic, vibration, and electrical signals

Patent Unnikrishnan, Jayakrishnan; He, Lijun; Matthews, Brett Alexander; ...

Systems and methods for detecting faults are provided. A method for determining a fault condition for a component of a drivetrain in a wind turbine can include receiving an acoustic signal from an acoustic signal measuring device. The method can further include receiving a vibration signal from a vibration signal measuring device. The method can further include analyzing the acoustic signal to determine an analyzed acoustic signal. The method can further include analyzing the vibration signal to determine an analyzed vibration signal. The method can further include determining a fault condition for the component based at least in part onmore » « less
Full Text Available
Method and apparatus for generating motor current spectra to enhance motor system fault detection

Patent Linehan, Daniel J [Knoxville, TN]; Bunch, Stanley L [Oak Ridge, TN]; Lyster, Carl T [Knoxville, TN]

A method and circuitry for sampling periodic amplitude modulations in a nonstationary periodic carrier wave to determine frequencies in the amplitude modulations. The method and circuit are described in terms of an improved motor current signature analysis. The method insures that the sampled data set contains an exact whole number of carrier wave cycles by defining the rate at which samples of motor current data are collected. The circuitry insures that a sampled data set containing stationary carrier waves is recreated from the analog motor current signal containing nonstationary carrier waves by conditioning the actual sampling rate to adjust withmore » « less
Full Text Available
Detection of shared memory faults in a computing job

Patent LePera, William P.; Sharkawi, Sameh Sherif; Lauria, Austen William

Technology for determining whether an inter-process type message has been successfully sent from a first process to a second process running on a single computer with a single processor(s) set. A variable (for example, a bit value) is used to indicate whether the inter-process message has been communicated between the processes. A timer and a predetermined timeout threshold are used to determine if the inter-process message has been pending for too long without being successfully communicated.
Full Text Available

Similar Records