IEEE 1553-2002 en Standard for Voltage-Endurance Testing of Form-Wound Coils and Bars for Hydrogenerators《水轮发电机用模绕线圈和棒的电压耐久性试验》.pdf

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1、IEEE Std 1553-2002IEEE Standards1553TMIEEE Trial-Use Standard for Voltage-Endurance Testing of Form-Wound Coils and Bars for HydrogeneratorsPublished by The Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USA7 March 2003IEEE Power Engineering SocietySpo

2、nsored by theElectric Machinery CommitteeIEEE StandardsPrint: SH95073PDF: SS95073The Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USACopyright 2003 by the Institute of Electrical and Electronics Engineers, Inc.All rights reserved. Published 7 March 2

3、003. Printed in the United States of America.Second Printing 4 April 2007. Evalated to Full-Use Standard 29 March 2007.IEEE is a registered trademark in the U.S. Patent +1 978 750 8400. Permission to photocopy portions of any individual standard for educationalclassroom use can also be obtained thro

4、ugh the Copyright Clearance Center.Note: Attention is called to the possibility that implementation of this standard may require use of subject mat-ter covered by patent rights. By publication of this standard, no position is taken with respect to the existence orvalidity of any patent rights in con

5、nection therewith. The IEEE shall not be responsible for identifying patentsfor which a license may be required by an IEEE standard or for conducting inquiries into the legal validity orscope of those patents that are brought to its attention.Copyright 2003 IEEE. All rights reserved. iiiIntroduction

6、(This introduction is not part of IEEE Std 1553-2002, IEEE Trial-Use Standard for Voltage-Endurance Testing of Form-Wound Coils and Bars for Hydrogenerators.)Since the 1950s, various manufacturers and users have developed procedures that evaluated the ability of theelectrical insulation of form-woun

7、d stator coils and bars to withstand electrical stress and high temperatureoperation B1, B4, B11, and B12. The test was referred to as a voltage-endurance test. The original purposewas to find those designs and manufacturing processes that could perform well under the test with combinedelectrical an

8、d thermal stresses. Over the years, some utilities started to apply the test to full-size coils, andbars and to use the results to either qualify a design from a vendor or as a quality control tool B1, B2, B8,B10, and B11.In 1989 the IEEE issued IEEE Std 1043TM-1989, IEEE Recommended Practice for Vo

9、ltage-Endurance Test-ing of Form-Wound Bars and Coils. This document defined the procedure for performing such tests on full-size bars and coils. The document was successful in that most organizations that performed such testingadopted the procedure, making the testing procedures more uniform. Conse

10、quently, the test results from dif-ferent organizations could be realistically compared. Several utilities required the test to be performed onfour or more coil legs per winding.In 1996 the IEEE Standards Board approved a revision to IEEE Std 1043-1989. Most of the recent revisionsto the 1989 docume

11、nt were to make the test procedure less ambiguous and to ensure that important aspectsthat can cause variations in results were more rigorously specified. Revisions also occurred in how the tem-peratures, voltage, and times-to-failure are to be recorded.During the revision of IEEE Std 1043-1989, it

12、became apparent that there was a desire that in addition to therecommended practice there be a standardthat is, with the test voltages, temperatures, and time-to-failures specified. The purpose of this standard is to define test and acceptance criteria for voltage-endurancetesting of form-wound bars

13、 and coils used in hydrogenerators.The voltage-endurance test by definition is an accelerated aging test in which elevated voltages are used.Establishing a standard with test temperatures, voltages, and acceptable test times will prevent the unneces-sary increase in these parameters, which has happe

14、ned in the past. Escalating the test parameters may resultin failure mechanisms that are unlikely to occur in service, thus rendering the voltage-endurance test a poorindicator of winding quality. On the other hand, by making the test a standard, the test would become morewidely specified and relate

15、d to the industrys experience.ParticipantsAt the time this standard was approved, the Materials Subcommittee P1553 Working Group had the follow-ing membership:G. C. Stone , ChairS. E. Cherukupalli, SecretaryRay BartnikasRob DraperTim EmeryGeorge GaoBal GuptaGary HeustonWilliam McDermidG. H arold M i

16、llerCharles MilletGlen MottersheadBeant NindraLaurence RodlandHoward SeddingJames E. TimperleyVicki WarrenCharles A.Wilsoniv Copyright 2003 IEEE. All rights reserved.The following members of the balloting committee voted on this standard. Balloters may have voted forapproval, disapproval, or abstent

17、ion. When the IEEE-SA Standards Board approved this standard on 11 December 2002, it had the followingmembership:James T. Carlo, ChairJames H. Gurney, Vice ChairJudith Gorman, Secretary*Member EmeritusAlso included is the following nonvoting IEEE-SA Standards Board liaison:Alan Cookson, NIST Represe

18、ntativeSatish K. Aggarwal, NRC RepresentativeSavoula AmanatidisIEEE Standards Managing EditorVaino AarePaul A. AndersonRoy L. BalkeRay BartnikasKevin D. BeckerE. A. BoulterStephen B. KuznetsovPeter H. LandrieuWilliam E. LarzelereKevin LovingAntonio J. Marques-CardosoWalter J. MartinyWilliam R. McCow

19、nWilliam McDermidJeffrey L. McElray, Sr.Donald G. McLarenJames R. MichalecG. Harold MillerCharles MilletNils E. NilssonJames A. OliverMadan RanaCharles M. RoweJames A. RuggieriLori RuxMaurice A. SecrestGreg C. StoneJames E. TimperleyPaul Dieter WagnerVicki WarrenCharles A. WilsonHugh ZhuSid BennettH

20、. Stephen BergerClyde R. CampRichard DeBlasioHarold E. EpsteinJulian Forster*Howard M. FrazierToshio FukudaArnold M. GreenspanRaymond HapemanDonald M. HeirmanRichard H. HulettLowell G. JohnsonJoseph L. Koepfinger*Peter H. LipsNader MehravariDaleep C. MohlaWilliam J. MoylanMalcolm V. ThadenGeoffrey O

21、. ThompsonHoward L. WolfmanDon WrightCopyright 2003 IEEE. All rights reserved. vContents1. Overview 11.1 Scope 11.2 Purpose. 12. References 13. Definitions . 24. Sample size and test parameters 34.1 Sample size 34.2 Test parameters 34.3 Test procedure 45. Acceptance criteria 46. Data records . 4Anne

22、x A (informative) Bibliography 5Copyright 2003 IEEE. All rights reserved. 1IEEE Trial-Use Standard for Voltage-Endurance Testing of Form-Wound Coils and Bars for Hydrogenerators 1. OverviewThis standard is comprised of six clauses. Clause 1 provides the scope and purpose of this standard. Clause 2li

23、sts references to other standards, recommended practices, and guides that are useful in applying this stan-dard. Clause 3 provides definitions that are either not found in other standards, recommended practices, andguides, or have been modified for use with this standard. Clause 4 establishes the sa

24、mple size and testparameters, while Clause 5 defines the acceptance criteria. Clause 6 describes the data records that have tobe maintained at the completion of the test.1.1 ScopeThis standard applies to voltage-endurance testing of form-wound stator winding bars and coils having amica-based insulat

25、ion system with thermo-setting polyester and/or epoxy resins used in hydrogenerators andpumped storage generators operating in air with a rated line-to-line voltage between 4 000 to 22 000 V, anda frequency of 50 Hz or 60 Hz. 1.2 PurposeThe purpose of this standard is to define the test parameters f

26、or the voltage-endurance test and the number ofspecimens to be used for each test. It also defines the acceptance criteria and the procedures for retesting inthe event of a premature failure during the voltage-endurance test. The details of the test procedure aredescribed in IEEE Std 1043TM-1996.2.

27、ReferencesThe following publications shall be used in conjunction with this standard. When the following publicationsare superseded by an approved revision, the revision shall apply.ASTM D 1868-1993, Standard Test Method for Detection and Measurement of Partial Discharge (Corona)Pulses in Evaluation

28、 of Insulation Systems.11ASTM publications are available from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken,PA 19428-2959, USA (http:/www.astm.org/). IEEEStd 1553-2002 IEEE TRIAL-USE STANDARD FOR VOLTAGE-ENDURANCE TESTING OF2 Copyright 2003 IEEE. All rights

29、 reserved.IEEE Std 4TM-1995, IEEE Standard Techniques for High-Voltage Testing.2,3IEEE Std 43TM-2000, IEEE Recommended Practice for Testing Insulation Resistance of Rotating Machin-ery.IEEE Std 286TM-2000, IEEE Recommended Practice for Measurement of Power Factor Tip-Up of ElectricMachinery Stator C

30、oil Insulation.IEEE Std 930TM-1987 (Reaff 1995), IEEE Guide for the Statistical Analysis of Electrical Insulation VoltageEndurance Data.IEEE Std 1043-1996, IEEE Recommended Practice for Voltage-Endurance Testing of Form-Wound Barsand Coils.IEEE Std 1434TM-2000, IEEE Trial-Use Guide to the Measuremen

31、t of Partial Discharges in RotatingMachinery.3. DefinitionsFor the purposes of this standard, the following terms and definitions apply. IEEE 100, The AuthoritativeDictionary of IEEE Standards Terms, Seventh Edition B7, should be referenced for terms not defined inthis clause.3.1 groundwall insulati

32、on: The main high-voltage electrical insulation that separates the copper conductorsfrom the grounded stator core in motor and generator stator windings.3.2 half-coil: The slot portion and end arms comprising a complete Roebel bar or one half of a form-woundcoil.3.3 semiconductive slot coating: The

33、partially conductive paint or tape layer in intimate contact with thegroundwall insulation in the slot portion of the stator core. This coating ensures that there is little voltagebetween the surface of the coil and the grounded stator core.3.4 stress control coating: The paint or tape on the outsid

34、e of the groundwall insulation that extends severalcentimeters beyond the semiconductive slot coating in high-voltage stator bars and coils. The stress controlcoating often contains silicon carbide particles that tend to linearize the electric field distribution along thecoil or bar end-turn. The st

35、ress coating overlaps the semiconductive slot coating to provide electrical contactbetween them.3.5 test temperature: The temperature of the heater plates mounted on the stator coil or bar, as measured bya temperature sensor embedded within the heater plate.3.6 top/bottom coil: The top half bar/coil

36、 is the one that is closest to the air gap. The bottom half bar/coil isthe one that is furthest from the air gap.3.7 voltage endurance: The time-to-failure of the groundwall insulation under a high electrical stress.2The IEEE standards or products referred to in Clause 2 are trademarks owned by the

37、Institute of Electrical and Electronics Engineers,Inc.3IEEE publications are available from the Institute of Electrical and Electronics Engineers, Inc., 445 Hoes Lane, P.O. Box 1331, Piscat-away, NJ 08855-1331, USA (http:/standards.ieee.org/).IEEEFORM-WOUND COILS AND BARS FOR HYDROGENERATORS Std 155

38、3-2002Copyright 2003 IEEE. All rights reserved. 34. Sample size and test parameters4.1 Sample sizeThe number of specimens shall be at least four bars (two top and two bottom bars) or two coils, but not morethan 1% of the number of bars/coils in the winding. Additional bars/coils may be needed in the

39、 case that aretest is required, as per Clause 5.The specimens can be selected from the prototype stage and/or at different stages of the production cycle.The actual time at which the bars/coils will be selected depends on the agreement between the manufacturerand user.4.2 Test parametersThe test vol

40、tage shall be selected from either of the two proposed schedules defined in Table 1. It is impor-tant to note that the test times for each test will depend on the test voltages selected from Schedules A or B.Schedule A is associated with a longer minimum acceptable test life (400 hours), whereas Sch

41、edule B isassociated with a shorter minimum acceptable test life (250 hours). Generally, Schedule B test voltages areconsidered to be more severe, in spite of the shorter minimum acceptable test life expected.Table 1Test voltages for voltage-endurance testaaIt is recommended that for test voltages a

42、bove 43 kV the actual test voltage be negotiated between manufacturer anduser.Rated line-to-line voltage of the windings (kV)Rated line-to-ground voltage (kV)Schedule A Schedule B400 hours 250 hoursVoltage-endurance test voltages (kV)Column 1 Column 2 Column 3 Column 44.02.318.710.6.6 3.81 14.3 16.7

43、11.0 6.35 23.9 27.911.5 6.64 25.0 29.112.0 6.93 26.1 30.412.5 7.22 27.1 31.713.8 7.97 30.0 35.015.0 8.66 32.6 38.015.5 8.95 33.6 39.316.0 9.24 34.7 40.617.0 9.82 36.9 43.118.0 10.39 39.1a19.0 10.97 41.2a22.0 12.70aaIEEEStd 1553-2002 IEEE TRIAL-USE STANDARD FOR VOLTAGE-ENDURANCE TESTING OF4 Copyright

44、 2003 IEEE. All rights reserved.For machines with a voltage rating between the levels stated in Column 1 of Table 1, it is recommended thatthe test voltages (Column 3 and Column 4) be determined by interpolation. It is recommended that the samevoltage ratio, namely 3.76 or 4.39 times line-to-ground

45、rms voltage (Column 2 values), be used when speci-fying the test voltage.The test temperature shall be the maximum specified temperature of the winding as measured by an embed-ded temperature sensor between the top and bottom bar/coil in the winding. It is suggested that the test tem-perature be dis

46、cussed between the vendor and the purchaser and agreed upon before the test begins. 4.3 Test procedureThe voltage-endurance test shall be performed according to the procedures described in IEEE Std 1043-1996. The criteria for specimen failure are described in IEEE Std 1043-1996.It shall be determine

47、d before beginning the test whether insulation failures involving the stress grading shallbe considered as specimen failures for the purpose of the test. Some erosion or discoloration of the stresscontrol coating during the voltage-endurance test is normal and is not considered to be an insulation f

48、ailure.It shall be determined before beginning the test whether or not deterioration involving the stress grading andslot coatings is to be monitored and repaired periodically during the progress of the voltage-endurance test.5. Acceptance criteriaIt is recognized that the number of specimens used f

49、or the test represents a statistically very small samplesize in comparison with the number of form-wound coils or bars normally manufactured for a machine.Therefore, conclusions reached about the insulation quality or manufacture may have some uncertainty. Incases where questionable results occur, efforts shall be made to increase the confidence in the results by test-ing additional bars/coils.If all specimens survive test times greater than 400 hours (Schedule A) or 250 hours (Schedule B), the entirebar/coil population is deemed to have met the test requirement