1、IEEE Std C37.90.2-2004(Revision ofIEEE Std C37.90.2-1995)IEEE StandardsC37.90.2TMIEEE Standard for Withstand Capability ofRelay Systems to Radiated ElectromagneticInterference from Transceivers3 Park Avenue, New York, NY 10016-5997, USAIEEE Power Engineering SocietySponsored by thePower Systems Rela
2、ying CommitteeIEEE Standards17 December 2004Print: SH95285PDF: SS95285Recognized as anAmerican National Standard (ANSI)The Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USACopyright 2004 by the Institute of Electrical and Electronics Engineers, Inc.Al
3、l rights reserved. Published 17 December 2004. Printed in the United States of America.IEEE is a registered trademark in the U.S. Patent (978) 750-8400. Permission to photocopy portions of any individual standard for educationalclassroom use can also be obtained through the Copyright Clearance Cente
4、r.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 connection therewith. The IEEE shall
5、 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 2004 IEEE. All rights reserved. iiiIntroductionIEEE Standard for Withstand Capab
6、ility of Relay Systems to Radiated Electromagnetic Interference fromTransceivers was developed and published initially as a Trial Use Standard with an field strengthrequirement of 10 volts/meter over the frequency range of 25 Mhz. to 1000 Mhz. The Trial Use standardexpired after 2 years of publicati
7、on. Following reviews of inputs received from use of the Trial UseStandard, the final C37.90.2 document was subsequently released with a field strength requirement of 35volts/meter. This field strength magnitude was established based upon test information received from theWorking Group members.This
8、publication is a revision of the IEEE Std C37.90.2-1995. This revision of IEEE Std C37.90.2 containschanges so it will harmonize more closely with currently published IEC standards whenever possible. Thetest requirement changes are as described below.a) The minimum test frequency of the sweep range
9、has been changed from 25 Mhz to 80 Mhz, which isthe same as IEC 60255-22-3 B1. b) The maximum sweep rate was changed from 0.005 octave/sec. to 1.5 103decades per second,which is the same as IEC 60255-22-3 B1.c) Added a Spot Frequency test, as specified in IEC 60255-22-3 B1.Notice to usersErrataErrat
10、a, if any, for this and all other standards can be accessed at the following URL: http:/standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check this URL forerrata periodically.InterpretationsCurrent interpretations can be accessed at the following URL: http:/standard
11、s.ieee.org/reading/ieee/interp/index.html.PatentsAttention is called to the possibility that implementation of this standard may require use of subject mattercovered by patent rights. By publication of this standard, no position is taken with respect to the existence orvalidity of any patent rights
12、in connection therewith. The IEEE shall not be responsible for identifyingpatents or patent applications for which a license may be required to implement an IEEE standard or forconducting inquiries into the legal validity or scope of those patents that are brought to its attention.(This introduction
13、 is not part of IEEE Std C37.90.2-2004, IEEE Standard for Withstand Capability of Relay Systems toRadiated Electromagnetic Interference from Transceivers.)iv Copyright 2004 IEEE. All rights reserved.ParticipantsThis standard was prepared by the I18 Working Group of the Relaying Practices Subcommitte
14、e of the IEEEPower System Relaying Subcommittee. At the time this standard was approved, the working group had thefollowing members.Jeffrey A. Burnworth, ChairAt the time this standard was approved, the Relaying Practices and Consumers Interface Subcommitteemembership was as follows:J. Gilbert, Chai
15、rJeffrey GilbertWilliam HiginbothamG. JohnsonWilliam C. KotheimerRobert D. PettigrewRoger E. RayMiriam SandersMark SimonVeselin SkendzicJohn TengdinA. P. ApostolovM. BajpaiB. L. BeckwithJ. R. BoyleJeffrey A. BurnworthM. W. CarpenterJack Chadwick, Jr.M. ClarkM. W. ConroyC. DownsP. R. DrumI. O. Hasenw
16、inkleS. H. HorowitzJ. D. HuddlestonJ. W. InglesonM. KezunovicWilliam C. KotheimerP. A. KotosE. KritzauskasW. LoweW. J. Marsh, Jr.M. J. McDonaldP. J. MclarenM. MeisingerB. NelsonRobert D. PettigrewT. PhillippeeM. M. RenieriM. S. SachdevT. S. SidhuMark SimonL. E SmithJ. E. StephensR. SullivanMark Swan
17、sonJ. TeagueJ. S. ThorpD. A. TziouvarasE. A. UdrenY. YoungS. E. ZochollCopyright 2004 IEEE. All rights reserved. vThe following members of the individual balloting committee voted on this standard. Balloters may havevoted for approval, disapproval, or abstention. When the IEEE-SA Standards Board app
18、roved this standard on 24 September 2004, it had the followingmembership:Don Wright, ChairSteve M. Mills, Vice ChairJudith Gorman, Secretary*Member EmeritusAlso included are the following nonvoting IEEE-SA Standards Board liaisons:Satish K. Aggarwal, NRC RepresentativeRichard DeBlasio, DOE Represent
19、ativeAlan Cookson, NIST RepresentativeWilliam AckermanSteve AlexandersonMunnu BajpaiMichael BaslerKenneth BehrendtRobert BereshStuart BoucheyDaniel BrosnanGustavo BrunelloJohn BurgerJeffrey A. BurnworthJohn W. Chadwick, Jr.R DaubertByron DavenportMatthew DavisPaul DrumAmir El-SheikhWalter ElmoreGary
20、 EngmannKenneth FoderoMarcel FortinFrank GerleveJeffrey GilbertAnthony GiulianteRoger HeddingCharles HenvilleWilliam HiginbothamEdward Horgan, Jr.John HorwathJames D. Huddleston, IIIJoseph L KoepfingerWilliam KotheimerMarc LacroixJason LinWilliam LoweJohn McDonaldMark McGranaghanGary MichelBruce Mus
21、chlitzGerald NicelyMario RanieriPeter RaschioRoger E. RayMichael RobertsCharles RogersJames RuggieriMohindar S. SachdevMiriam SandersTarlochan SidhuH. Jin SimMark SimonH. Lee SmithJames SmithJohn TengdinRon WestfallKarl ZimmermanCharles WagnerChuck AdamsH. Stephen BergerMark D. BowmanJoseph A. Brude
22、rBob DavisRoberto de BoissonJulian Forster*Arnold M. GreenspanMark S. HalpinRaymond HapemanRichard J. HollemanRichard H. HulettLowell G. JohnsonJoseph L. Koepfinger*Hermann KochThomas J. McGeanDaleep C. MohlaPaul NikolichT. W. OlsenRonald C. PetersenGary S. RobinsonFrank StoneMalcolm V. ThadenDoug T
23、oppingJoe D. Watsonvi Copyright 2004 IEEE. All rights reserved.CONTENTS1. Overview 11.1 Scope 11.2 Purpose. 12. Definitions . 13. Test severity level 24. Test equipment. 25. Test set-up 36. Test procedure 36.1 Frequency sweep or step test . 46.2 Keying test . 46.3 Spot Frequency test 46.4 Criteria f
24、or acceptance . 57. Test records 6Annex A (informative) Transceiver field strength. 7Annex B (informative) Test Waveform specification . 8Annex C (informative) Field strength calibration, IEC 61000-4. 9Annex D (informative) Bibliography 11Copyright 2004 IEEE. All rights reserved. 1IEEE Standard for
25、Withstand Capability of Relay Systems to Radiated Electromagnetic Interference from Transceivers1. Overview1.1 ScopeThis standard defines a required withstand level and establishes a test method to evaluate the susceptibility of protective relays to single-frequency electromagnetic fields in the rad
26、io frequency domain, such as those generated by portable or mobile radio transceivers and wireless communication devices. This publication includes test requirements, signal levels, and setups.1.2 PurposeThe purpose of this standard is to establish a common reference and test procedure for evaluatin
27、g the performance of equipment used for power system protection when subject to Radiated Electromagnetic Interference from Transceivers.2. DefinitionsDefinitions of relay terms are not included in this standard. Refer to IEEE Std C37.100-1992, Standard Definitions for Power Switchgear B61for definit
28、ions of relay terms. These terms are also included in The Authoritative Dictionary of IEEE Standards Terms, Seventh Edition B4. 2.1 far field: Region where the power flux density from an antenna approximately obeys an inverse square law of distance.2.2 frequency band: Continuous range of frequencies
29、 extending between two limits.2.3 polarization: Orientation of the electric field vector of a radiated field.2.4 shielded enclosure: Screen or solid metal housing designed expressly for the purpose of isolating the internal from the external electromagnetic environment. 1The numbers in brackets corr
30、espond to those in the bibliography in Annex D.IEEEStd C37.90.2-2004 IEEE STANDARD FOR WITHSTAND CAPABILITY OF RELAYING SYSTEMS TO2 Copyright 2004 IEEE. All rights reserved.3. Test severity levelThe rms field strength prior to modulation shall be 20 V/m. The waveform shall be amplitude modulated wit
31、h a 1 kHz sine wave. Modulation shall be equal to 80%, with the resulting maximum rms field strength not being less than 35 V/m. The test carrier frequency shall be swept or stepped through the range of 80 MHz to 1000 MHz. 4. Test equipmentThe following types of test equipment are recommended. The u
32、se of other means of establishing and controlling the field is acceptable providing the required conditions can be verified:a) Anechoic Chamber: of a size adequate to maintain a uniform field of sufficient dimensions with respect to the equipment under test (EUT). Additional absorbers may be used to
33、 damp reflections in chambers, which are not fully lined.NOTEAlternative methods of generating electromagnetic fields include TEM cells and stripline circuits, unlined screened rooms, partially lined shielded rooms, and open area test sites. Care should be taken to ensure that the conditions of test
34、s are equivalent to those in the anechoic chamber.2b) Radio Frequency (RF) Signal generator(s) capable of covering the frequency range with capability of an 80% amplitude modulation by a 1 kHz sinewave. If the test carrier is to be swept, the RF signal generator should be capable of achieving a swee
35、p rate of 1.5 10 3decades per second.c) A power amplifier to amplify signal and provide antenna drive to the necessary field level, if signal generator is inadequate.2Notes in text, tables, and figures are given for information only and do not contain requirements needed to implement the standard.0.
36、8 mMINIMUM NONCONDUCTINGTABLE0.3 mMINIMUMANTENNACLTESTSPECIMEN0.8 mMINIMUM1 m1 mMINIMUM0.8 mMINIMUM0.5 mMINIMUM1 mMINIMUMFigure 1Test set-upIEEERADIATED ELECTROMAGNETIC INTERFERENCE FROM TRANSCEIVERS Std C37.90.2-2004Copyright 2004 IEEE. All rights reserved. 3d) Field generating antennas capable of
37、covering the frequency range such as biconical, conical logarithmic spiral, or any other linearly polarized antenna system capable of satisfying frequency requirements.e) Associated equipment to record the power levels necessary for the required field strength and to control the generation of that l
38、evel for testing.f) Associated equipment to monitor output of the relay under test to establish operating performance and signals during test.5. Test set-upWhere possible, it is recommended that all auxiliary equipment should be located outside the boundary of the test enclosure or site.The equipmen
39、t under test shall be individually tested, with the EUT placed on a non-conducting table, 0.8 m above the ground plane. All parts of the EUT shall be at least 0.8 m from any metal surfaces.When the EUT is exclusively mounted in a cubicle, the test may be conducted with the EUT in the cubicle. The cu
40、bicle should be placed on a non-conducting support, and for the practical reasons, a distance of approximately 0.1 m is recommended between the cubicle and the ground plane.Where earth connections are required for safety purposes, they shall be connected to the ground plane. Where they are not other
41、wise provided or specified by the manufacturer, earth connections shall be, where practical, 0.1 m from the auxiliary power supply connection.Other earth connections (e.g. for electromagnetic compatibility purposes) either specified or supplied by the manufacturer for connection to the same terminal
42、 as the safety earth connection, shall also be connected to the ground plane. The length of these connections shall be as short as possible.Interconnecting cables shall be as follows: The manufacturers specified wiring types and connectors shall be used. If the manufacturers specification requires a
43、 wiring length of less than or equal to 3 m, then the specified length shall be used. The wiring shall be bundled to 1m lengths. If the specified length is greater than 3 m, or is not specified, then the exposed length shall be 1 m. The bundled length of exposed wiring shall be ran in a configuratio
44、n that essentially simulates normal wiring.6. Test procedureIt is the intent of this test to duplicate as nearly as possible in-service conditions with the relay in its normal non-transitional state. Where appropriate, the relay shall be energized with rated voltage and with current equal to 75% of
45、the nominal current transformer (CT) rating. The relay settings should be chosen such that the relay is as close as possible to its transitional state, but not closer than the recommended margins for its application. Time delay settings of the EUT shall be set to their minimum practical values as de
46、fined by their intended application. Input voltage to the power supply circuits must be within the specified limits. Wiring shall be consistent with the manufacturers recommended procedures, and the relay shall be tested in its case with the cover(s) and access doors, if any, in the closed position.
47、 The effect of radiated electromagnetic interference on the relay in its transitional or operate state is only considered at certain spot frequencies as specified in 6.3.IEEEStd C37.90.2-2004 IEEE STANDARD FOR WITHSTAND CAPABILITY OF RELAYING SYSTEMS TO4 Copyright 2004 IEEE. All rights reserved.The
48、test shall be performed with the antenna facing the front, rear, and each side (excluding top and bottom) of the EUT. If the EUT can be optionally mounted in either the horizontal or vertical configuration, then all 6 sides must be tested. Each facing surface shall be tested twice, once with the ant
49、enna positioned vertically and again with the antenna positioned horizontally.The following tests are to be performed.a) The EUT shall be subjected to an electromagnetic field from a radiation source operating within the swept or stepped frequency range of 80 MHz to 1000 MHz.b) The EUT shall be subjected to a keying test over the frequency range of 80 MHz to 1000 MHz.c) The EUT shall be subjected to an electromagnetic field from a radiation source at given spot frequencies from 80 MHz to 900 MHz.6.1 Frequency sweep or step testThe frequency range s
