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Position: Chinese Standard in English/GB/T 20140-2006
GB/T 20140-2006   Dynamic characteristic and vibration measurement method of turbo-generators on stator windings and evaluation criteria (English Version)
Standard No.: GB/T 20140-2006 Status:superseded remind me the status change

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Language:English File Format:PDF
Word Count: 3000 words Price(USD):334.0 remind me the price change

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Implemented on:2006-8-1 Delivery: via email in 1 business day
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Standard No.: GB/T 20140-2006
English Name: Dynamic characteristic and vibration measurement method of turbo-generators on stator windings and evaluation criteria
Chinese Name: 透平型发电机定子绕组端部动态特性和振动试验方法及评定
Chinese Classification: K20    Electric rotating machinery in general
Professional Classification: GB    National Standard
ICS Classification: 29.160.01 29.160.01    Rotating machinery in general 29.160.01
Issued by: AQSIQ; SAC
Issued on: 2006-3-6
Implemented on: 2006-8-1
Status: superseded
Superseded by:GB/T 20140-2016 Measurement method and evaluation criteria of dynamic characteristic and vibration on stator end windings of cylindrical synchronous generators
Superseded on:2016-9-1
Language: English
File Format: PDF
Word Count: 3000 words
Price(USD): 334.0
Delivery: via email in 1 business day
1 Scope This standard specifies end modal test analysis method of turbine-type generator stator winding and evaluation criteria and end vibration measurement method of turbine-type generator stator winding and evaluation criteria. This standard is applicable to turbine-type generator with rated power 200MW or above and rated speed 3000r/min and 3600r/min. Before the turbine-type generator leaves factory, or during new machine handover, or the generator in thorough repair, stator winding end modal test shall be carried out and inherent frequency of lead wire shall be measured. Where abnormal situation occurs in operation (for example, withstand sudden short circuit, coil abrasion, looseness, etc.), carrying out modal test and lead wire inherent frequency measurement are advised. In type test, where severe looseness occurs after the stator winding end is impacted by short circuit or the winding end has unqualified elliptical mode shape modal, vibration measurement shall be carried out to stator winding end. Turbine generators below 200MW may execute by reference to this standard. The imported units may also execute according to this standard. 2 Normative References The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties who enter into agreement according to these specifications are encouraged to research whether the latest editions of these documentations are applied or not. For undated references, the latest edition of the referenced document is applicable to these specifications. GB/T 2298 Mechanical Vibration and Shock-Terminology 3 Terms Terms determined according to GB/T 2298 and the following ones. 3.1 Natural frequency The frequency of free vibration of linear system. 3.2 Frequency response function a) The ratio of steady state output vector to input vector during simple harmonic excitation. b) The ratio of output Fourier conversion to input Fourier conversion during transient excitation. c) The ratio of output and input cross spectrum to input autospectrum during stable random excitation. 3.3 Modal test analysis Vibration test analysis carried out to determine system modal parameter. Generally, work out frequency response matrix by excitation and response relation first; then identify modal parameter by methods such as curve fitting. 3.4 Model parameter Modal characteristic parameter, namely inherent frequency, mode shape, modal mass, modal stiffness and modal damping of each step of the vibration system. 3.5 Mode shape A mode shape of given vibration modal of mechanical system refers to the described figure by maximum displacement value caused by points on neutral plane (or neutral axis) deviating their equilibrium positions. Generally, the mode shape value of each point shall be generalized according to the deviation value of chosen point. 3.6 Elliptical mode shape The mode shape of which the shape is elliptical. 3.7 Amplitude The maximum value of sinusoidal vibration. Synonym: amplitude. 3.8 Peak value The maximum value of vibratory magnitude in given interval. 3.9 Peak to peak value The algebraic difference between the maximum values of vibratory magnitude.
Referred in GB/T 20140-2006:
*GB/T 2298-2010 Mechanical vibration,shock and condition monitoring - Vocabulary
GB/T 20140-2006 is referred in:
* GB/T 7064-2008 Specific requirements for cylindrical rotor synchronous machines
Code of China
Standard
GB/T 20140-2006  Dynamic characteristic and vibration measurement method of turbo-generators on stator windings and evaluation criteria (English Version)
Standard No.GB/T 20140-2006
Statussuperseded
LanguageEnglish
File FormatPDF
Word Count3000 words
Price(USD)334.0
Implemented on2006-8-1
Deliveryvia email in 1 business day
Detail of GB/T 20140-2006
Standard No.
GB/T 20140-2006
English Name
Dynamic characteristic and vibration measurement method of turbo-generators on stator windings and evaluation criteria
Chinese Name
透平型发电机定子绕组端部动态特性和振动试验方法及评定
Chinese Classification
K20
Professional Classification
GB
ICS Classification
Issued by
AQSIQ; SAC
Issued on
2006-3-6
Implemented on
2006-8-1
Status
superseded
Superseded by
GB/T 20140-2016 Measurement method and evaluation criteria of dynamic characteristic and vibration on stator end windings of cylindrical synchronous generators
Superseded on
2016-9-1
Abolished on
Superseding
Language
English
File Format
PDF
Word Count
3000 words
Price(USD)
334.0
Keywords
GB/T 20140-2006, GB 20140-2006, GBT 20140-2006, GB/T20140-2006, GB/T 20140, GB/T20140, GB20140-2006, GB 20140, GB20140, GBT20140-2006, GBT 20140, GBT20140
Introduction of GB/T 20140-2006
1 Scope This standard specifies end modal test analysis method of turbine-type generator stator winding and evaluation criteria and end vibration measurement method of turbine-type generator stator winding and evaluation criteria. This standard is applicable to turbine-type generator with rated power 200MW or above and rated speed 3000r/min and 3600r/min. Before the turbine-type generator leaves factory, or during new machine handover, or the generator in thorough repair, stator winding end modal test shall be carried out and inherent frequency of lead wire shall be measured. Where abnormal situation occurs in operation (for example, withstand sudden short circuit, coil abrasion, looseness, etc.), carrying out modal test and lead wire inherent frequency measurement are advised. In type test, where severe looseness occurs after the stator winding end is impacted by short circuit or the winding end has unqualified elliptical mode shape modal, vibration measurement shall be carried out to stator winding end. Turbine generators below 200MW may execute by reference to this standard. The imported units may also execute according to this standard. 2 Normative References The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties who enter into agreement according to these specifications are encouraged to research whether the latest editions of these documentations are applied or not. For undated references, the latest edition of the referenced document is applicable to these specifications. GB/T 2298 Mechanical Vibration and Shock-Terminology 3 Terms Terms determined according to GB/T 2298 and the following ones. 3.1 Natural frequency The frequency of free vibration of linear system. 3.2 Frequency response function a) The ratio of steady state output vector to input vector during simple harmonic excitation. b) The ratio of output Fourier conversion to input Fourier conversion during transient excitation. c) The ratio of output and input cross spectrum to input autospectrum during stable random excitation. 3.3 Modal test analysis Vibration test analysis carried out to determine system modal parameter. Generally, work out frequency response matrix by excitation and response relation first; then identify modal parameter by methods such as curve fitting. 3.4 Model parameter Modal characteristic parameter, namely inherent frequency, mode shape, modal mass, modal stiffness and modal damping of each step of the vibration system. 3.5 Mode shape A mode shape of given vibration modal of mechanical system refers to the described figure by maximum displacement value caused by points on neutral plane (or neutral axis) deviating their equilibrium positions. Generally, the mode shape value of each point shall be generalized according to the deviation value of chosen point. 3.6 Elliptical mode shape The mode shape of which the shape is elliptical. 3.7 Amplitude The maximum value of sinusoidal vibration. Synonym: amplitude. 3.8 Peak value The maximum value of vibratory magnitude in given interval. 3.9 Peak to peak value The algebraic difference between the maximum values of vibratory magnitude.
Contents of GB/T 20140-2006
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