Already a subscriber? 
MADCAD.com Free Trial
Sign up for a 3 day free trial to explore the MADCAD.com interface, PLUS access the
2009 International Building Code to see how it all works.
If you like to setup a quick demo, let us know at support@madcad.com
or +1 800.798.9296 and we will be happy to schedule a webinar for you.
Security check
Please login to your personal account to use this feature.
Please login to your authorized staff account to use this feature.
Are you sure you want to empty the cart?
PD CLC IEC/TS 60034-32:2021 Rotating electrical machines - Measurement of stator end-winding vibration at form-wound windings, 2021
- undefined
- Annex ZA (normative)Normative references to international publications with their corresponding European publications
- CONTENTS
- FOREWORD
- INTRODUCTION
- Figures [Go to Page]
- Figure 1 – Stator end-winding of a turbogenerator (left)and a large motor (right) at connection end with parallel rings
- Figure 2 – Example for an end-winding structure of an indirect cooled machine
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and abbreviated terms [Go to Page]
- 3.1 Terms and definitions
- 3.2 Abbreviated terms
- 4 Causes and effects of stator end-winding vibrations
- 5 Measurement of stator end-winding structural dynamics at standstill [Go to Page]
- 5.1 General
- 5.2 Experimental modal analysis [Go to Page]
- 5.2.1 General
- 5.2.2 Measurement equipment
- 5.2.3 Measurement procedure
- Figure 3 – Measurement structure with point numbering and indication of excitation [Go to Page]
- 5.2.4 Evaluation of measured frequency response functions, identification of modes
- 5.2.5 Elements of test report
- Table 1 – Node number of highest mode shape in relevant frequency rangeand minimum number of measurement locations [Go to Page]
- [Go to Page]
- 5.2.6 Interpretation of results
- 5.3 Driving point analysis [Go to Page]
- 5.3.1 General
- 5.3.2 Measurement equipment
- 5.3.3 Measurement procedure
- 5.3.4 Evaluation of measured FRFs, identification of modes
- 5.3.5 Elements of test report
- 5.3.6 Interpretation of results
- 6 Measurement of end-winding vibration during operation [Go to Page]
- 6.1 General
- 6.2 Measurement equipment [Go to Page]
- 6.2.1 General
- 6.2.2 Vibration transducers
- 6.2.3 Electro-optical converters for fiber optic systems
- 6.2.4 Penetrations for hydrogen-cooled machines
- 6.2.5 Data acquisition
- 6.3 Sensor installation [Go to Page]
- 6.3.1 Sensor locations
- 6.3.2 Good installation practices
- 6.4 Most relevant dynamic characteristics to be retrieved
- 6.5 Identification of operational deflection shapes
- 6.6 Elements of test report
- 6.7 Interpretation of results
- 7 Repeated measurements for detection of structural changes [Go to Page]
- 7.1 General
- 7.2 Reference measurements, operational parameters and their comparability
- 7.3 Choice of measurement actions
- Figure 4 – Simplified cause effect chain of stator end-winding vibrationand influencing operational parameters
- 7.4 Aspects of machine’s condition and its history
- Table 2 – Possible measurement actions to gain insight intovarious aspects of the cause-effect chain.
- Annex A (informative)Background causes and effects of stator end-winding vibrations [Go to Page]
- A.1 Stator end-winding dynamics [Go to Page]
- A.1.1 Vibration modes and operating deflection shape
- A.1.2 Excitation of stator end-winding vibrations
- A.1.3 Relevant vibration characteristics of stator end-windings
- Figure A.1 – Illustration of global vibration modes [Go to Page]
- A.1.4 Influence of operational parameter
- A.2 Increased stator end-winding vibrations [Go to Page]
- A.2.1 General aspects of increased vibration
- A.2.2 Increase of stator end-winding vibrations levels over time and potential remedial actions
- A.2.3 Transient conditions as cause for structural changes
- A.2.4 Special aspects of main insulation
- A.3 Operational deflection shape of global stator end-winding vibrations [Go to Page]
- A.3.1 General
- A.3.2 Force distributions relevant for global vibrational behaviour
- A.3.3 Idealized global vibration behaviour while in operation
- Figure A.2 – Example of rotational force distribution for p = 1
- Figure A.3 – Example of rotating operational vibration deflection wave for p = 1 [Go to Page]
- A.3.4 General vibration behaviour of stator end-windings
- Figure A.4 – Illustration of two vibration modes with different orientation in space (example for p = 1)
- Figure A.5 – on-rotational operational vibration deflection wave (example for p = 1) [Go to Page]
- A.3.5 Positioning of sensors for the measurement of global vibration level
- Figure A.6 – Amplitude and phase distribution for a general case.
- Figure A.7 – Sensors for the measurement of global vibration level centred in the winding zones
- Figure A.8 – Measurement of global vibration level with 6 equidistantly distributed sensors in the centre of winding zones
- A.4 Operational deflection shape of local stator end-winding vibrations
- Figure A.9 – Example – Sensor positions for the measurement of local vibration level of the winding connection relative to global vibration level
- Annex B (informative)Data visualization [Go to Page]
- B.1 General
- Figure B.1 – Measurement structure with point numbering and indication of excitation
- B.2 Standstill measurements
- Figure B.2 – Example for linearity test Force signal and variance of related FRFs
- Figure B.3 – Example for reciprocity test – FRFs in comparison
- Figure B.4 – Example – Two overlay-plots of the same transfer functions but different dimensions
- Figure B.5 – Shapes of the 4, 6 and 8-node modes with natural frequencies, measurement in one plane
- Figure B.6 – Mode shape of a typical 4-node mode with different viewing directions (stator end-winding and outer support ring)
- B.3 Measurements during operation
- Figure B.7 – Example – Amplitude and phase of dynamic compliance and coherence
- Figure B.8 – 2-pole, 60 Hz generator – Trend in displacement over time for 10 stator end-winding accelerometers, as well as one accelerometer mounted on the stator core
- Figure B.9 – 2-pole, 60 Hz generator – End-winding vibration, winding temperature trends over time, constant stator current
- Figure B.10 – 2-pole, 60 Hz generator – End-winding vibration,stator current trends over time, constant winding temperature
- Figure B.11 – 2-pole, 60 Hz generator – Example of variation in vibration levels at comparable operating conditions
- Figure B.12 – 2-pole, 60 Hz generator – Raw vibration signal, acceleration waveform
- Figure B.13 – 2-pole, 60 Hz generator – FFT and double integratedvibration signal, displacement spectrum
- Figure B.14 – 2-pole, 60 Hz generator – Displacement spectrum
- Figure B.15 – 2-pole, 60 Hz generator – Velocity spectrum
- Figure B.16 – 2-pole, 60 Hz generator – Acceleration spectrum
- Bibliography [Go to Page]
