GBZ43036-2023 English PDFUS$1039.00 · In stock
Delivery: <= 7 days. True-PDF full-copy in English will be manually translated and delivered via email. GBZ43036-2023: Rotating electrical machines - Measurement of stator end-winding vibration at form-wound windings Status: Valid
Basic dataStandard ID: GB/Z 43036-2023 (GB/Z43036-2023)Description (Translated English): Rotating electrical machines - Measurement of stator end-winding vibration at form-wound windings Sector / Industry: National Standard Classification of Chinese Standard: K20 Classification of International Standard: 29.160.01 Word Count Estimation: 52,576 Date of Issue: 2023-09-07 Date of Implementation: 2024-04-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GBZ43036-2023: Rotating electrical machines - Measurement of stator end-winding vibration at form-wound windings---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. GB /Z 43036-2023.Measurement of vibration at the end of the stator formed winding of a rotating electrical machine ICS 29.160.01 CCSK20 National Standardization Guiding Technical Documents of the People's Republic of China Measurement of Vibration at the Ends of Stator Formed Windings of Rotating Electric Machines Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee Table of contentsPreface III Introduction IV 1 Scope 1 2 Normative reference documents 1 3 Terms, definitions and abbreviations1 3.1 Terms and definitions 1 3.2 Abbreviations 4 4 Causes and effects of vibration at the end of the stator winding 4 5 Measurement of structural dynamics of stator winding end at rest5 5.1 Overview 5 5.2 Test modal analysis 5 5.3 Driving point analysis 10 6 Measurement of winding end vibration during operation 12 6.1 General 12 6.2 Measuring equipment13 6.3 Sensor installation 15 6.4 Obtain the most relevant dynamic features 16 6.5 Identification of operating vibration shape (ODS) 17 6.6 Elements of test report 17 6.7 Interpretation of results 18 7 Repeated Measurements to Detect Structural Changes18 7.1 Overview 18 7.2 Reference measurements, operating parameters and their comparability18 7.3 Selection of measurement items 20 7.4 Condition and historical aspects of the motor 21 Appendix A (informative) Background causes and effects of stator winding end vibration 22 Appendix B (Informative) Data Visualization 35 Reference 45 Figure 1 The ends of the stator windings of turbine generators (left) and large electric motors (right) are connected by parallel rings IV Figure 2 Example V of the winding end structure connected to the cooling motor Figure 3 Measurement structure with point numbers and stimulus indications 8 Figure 4 Simplified cause-effect chain of stator winding vibration and influencing operating parameters 20 Figure A.1 Illustration of global vibration modes24 Figure A.2 Example of rotational force distribution for p=128 Figure A.3 Example of vibration deformation waveform in rotational operation with p=1 29 Figure A.4 Vibration modes in two different directions (taking p=1 as an example) 30 Figure A.5 Rotating vibration deflection wave (taking p=1 as an example) 31 Figure A.6 Amplitude and phase distribution under general conditions 31 Figure A.7 Sensor for measuring global vibration levels centered on the winding area32 Figure A.8 Global vibration level measurement using 6 equidistantly spaced sensors in the center of the winding area33 Figure A.9 Example – Sensor locations for measuring local vibration levels of winding connections relative to global vibration levels 34 Figure B.1 Measurement structure with point numbers and stimulus flags35 Figure B.2 Linear test example---force signal and its FRF variance 36 Figure B.3 Example of reciprocity test---control FRFs 36 Figure B.4 Example---Superposition diagram of two transfer functions with the same but different dimensions37 Figure B.5 4, 6 and 8 node mode shapes and natural frequencies measured on a plane38 Figure B.6 Typical 4-node mode shapes in different observation directions (end of stator winding and external support ring) 38 Figure B.7 Example – Dynamic compliance and coherence amplitude and phase measured during operation 39 Figure B.8 2-pole, 60Hz generator---displacement trends measured by accelerometers over time, 10 of which are installed in the stator winding end, one is installed on the stator core 39 Figure B.9 2-pole, 60Hz generator---winding end vibration, winding temperature changing trend with time, stator current constant 40 Figure B.10 2-pole, 60Hz generator---winding end vibration, stator current changing trend with time, winding temperature constant 40 Figure B.11 2-pole, 60Hz generator---Example of vibration level changes under control operating conditions41 Figure B.12 2-pole, 60Hz generator---original vibration signal, acceleration waveform 42 Figure B.13 2-pole, 60Hz generator---FFT and double-integrated vibration signals, displacement spectrum 42 Figure B.14 2-pole, 60Hz generator---displacement spectrum 43 Figure B.15 2-pole, 60Hz generator --- speed spectrum 43 Figure B.16 2-pole, 60Hz generator --- acceleration spectrum 44 Table 1 Number of nodes and minimum number of measurement locations for the highest modal shape in the relevant frequency range9 Table 2 Possible measurement efforts to further explore various aspects of causality20ForewordThis document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is equivalent to IEC TS60034-32.2016 "Rotating electrical machines Part 32.Measurement of vibration at the end of the stator formed winding", The document type was adjusted from IEC technical specifications to my country's guiding technical documents. This document has made the following minimal editorial changes. ---In order to coordinate with the existing standards, the name of the standard is changed to "Measurement of Vibration at the End of the Stator Formed Winding of Rotating Electric Machines"; ---Footnotes added to the introduction. Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by the China Electrical Equipment Industry Association. This document is under the jurisdiction of the National Rotating Electrical Machines Standardization Technical Committee (SAC/TC26). This document was drafted by. Shanghai Motor System Energy Saving Engineering Technology Research Center Co., Ltd., Anhui Motor Products and Parts Quality Supervision Supervision and Inspection Center, Dongfang Electric Group Dongfang Electric Co., Ltd., Shandong Huali Electric Group Co., Ltd., Qingdao Tianyi Group Hongqi Electric Machinery Co., Ltd., CRRC Yongji Electric Co., Ltd., CRRC Zhuzhou Electric Co., Ltd., Shanghai Dianke Motor Technology Co., Ltd., Shanghai Electric Equipment Co., Ltd. Equipment Testing Institute Co., Ltd., Shanghai Electrical Apparatus Research Institute, Ningbo Dongli Transmission Equipment Co., Ltd., Nanyang Explosion-proof (Suzhou) Special Equipment Co., Ltd. company. The main drafters of this document. Lee Kuan Yew, Zhao Yunfeng, Wang Hui, Chen Changlin, Wang Qingdong, Liu Linwen, Lu Xianyue, Xue Xiuhui, Yang Zhenzhong, Zhang Xiaolong, Xie Chun.IntroductionLarge AC motors usually adopt a multi-phase stator winding structure. This document is intended for systems powered by multiphase voltage (or current) and built in an air gap. Double-layer winding large AC motor with vertical rotating magnetic field. During operation, the voltage and current of the motor will change with the mechanical load. This type of motor Usually designed in motor or generator mode with three-phase symmetrical windings. Large AC rotating machines usually use formed windings consisting of formed coils (as defined in 2.3 of IEC 60034-15.2009). Before assembling to the motor, the individual coils (single winding conductors) must be shaped. The end of the winding is the part of the stator winding that extends out of the iron core. This part is mostly in a conical structure, as shown in Figure 1. Note. The end of a single coil is marked with a black line. Figure 1 The stator winding ends of the turbine generator (left) and large electric motor (right) are connected by parallel rings Most large AC motors with stator formed windings are equipped with stator winding end support structures. The motor generates electricity in the power supply system When gas faults occur (such as grid power supply line faults and electronic power supply device faults), it is also expected that it can withstand high electromagnetic force loads. Designing the stator When supporting the structure at the winding end, it is not only necessary to enhance the strength of the winding end, but also to provide it with appropriate stiffness and inertia, thereby systematically affecting affects structural dynamics and therefore vibration levels during operation. The ends of the winding usually use support components such as plates and rings, and spacers are used to limit the distance between the coils at the end of the winding, and they are fixed with fasteners. Typical materials such as fiberglass, resin-impregnated felt and strapping are used for support components, gaskets and fasteners (as shown in Figure 2). In addition, metal High electric fields around components can produce discharges that affect long-term electrical strength. Figure 2 Example of winding end structure connected to cooling motor At present, there are no comprehensive technical specifications that can be used to determine the natural frequency of the motor at rest and the vibration phenomenon at the winding end during operation. Reliable results. Stator winding end modal test analysis is a relatively mature method and has been used to test the natural frequencies and vibration shapes of large motors around the world. certification work. The purpose of this method is to prevent the vibration of the winding end from being aggravated due to the influence of the natural frequency when the motor is running. The impact test is A common measurement method for measuring transfer functions and identifying the dynamic properties of structures. Usually, the stator winding should be carried out during motor manufacturing and overhaul inspection. End impact test. The stator winding ends can be measured during operation by installing special vibration sensors at specific locations on the winding ends. The stator winding vibration phenomenon is measured regularly or permanently online. Although the measurement method of the natural frequency and vibration level of the stator winding end is already a relatively complete technology, the analysis of the results is not consistent with the Interpretation still needs further improvement and development. Therefore, this document only serves as a technical specification rather than a mandatory standard. Measurement of Vibration at the Ends of Stator Formed Windings of Rotating Electric Machines1 ScopeThis document stipulates unified guidelines for measuring and reporting the vibration of the stator winding end when the motor is running and shut down. include. --- Defines terms for measuring, analyzing and evaluating stator winding end vibration and related structural dynamics; --- Provide guidance for offline measurement of dynamic characteristics/structural characteristics and online measurement of stator winding end vibration; ---Describes the use and installation method of winding end vibration detection equipment; ---Established general principles for reporting test results; ---Describes the theoretical background of stator winding end vibration. This document applies to. ---Three-phase synchronous generators with a rated output of 150MVA and above and driven by steam turbines or gas turbines; ---Three-phase direct grid-connected synchronous motors with rated output of 30MW and above. This document only describes the measurement procedures for 2-pole and 4-pole motors. For motors with ratings lower than those specified in this document, both supply and demand parties may Reach consensus on whether to use the measurement methods in this document.2 Normative reference documentsThe contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. shock-Signalprocessing-Part 1.Generalintroduction) Note. GB/T 29716.1-2013 Mechanical vibration and shock signal processing Part 1.Introduction (ISO 18431-1.2005, IDT) ISO 18431-2 Mechanical vibration and shock signal processing Part 2.Time domain window for Fourier transform analysis (Mechanicalvi- Note. GB/T 29716.2-2018 Mechanical vibration and shock signal processing Part 2.Time domain window for Fourier transform analysis (ISO 18431-2.2004, IDT) performance) Note. GB/T 755-2019 Ratings and performance of rotating electrical machines (IEC 60034-1.2017, IDT) IEC 60034-15 Rotating electrical machines Part 15.Impact voltage withstand level of stator formed windings of AC rotating electrical machines (Rotating acmachines) Note. GB/T 22715-2016 Impulse voltage resistance level of rotary AC motor stator formed coils (IEC 60034-15.2009, IDT) Note. GB/T 3836 (all parts) Explosive atmosphere [IEC 60079 (all parts)] 3 Terms, definitions and abbreviations 3.1 Terms and definitions The following terms and definitions apply to this document. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GBZ43036-2023_English be delivered?Answer: Upon your order, we will start to translate GBZ43036-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 7 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GBZ43036-2023_English with my colleagues?Answer: Yes. The purchased PDF of GBZ43036-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. |
