BS IEC 1000-2-6-1996 Electromagnetic compatibility (EMC) - Environment - Assessment of the emission levels in the power supply of industrial plants as regards low-frequency conduct.pdf
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1、BRITISH STANDARD BS IEC 1000-2-6:1995 Implementation of IEC1000-2-6:1995 Electromagnetic compatibility (EMC) Part 2: Environment Section 6: Assessment of the emission levels in the power supply of industrial plants as regards low-frequency conducted disturbances ICS 29.020BSIEC1000-2-6:1995 This Bri
2、tish Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comesintoeffect on 15 August1996 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference GEL/210 Draft fo
3、r comment 92/29707 DC ISBN 0 580 26019 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee GEL/210, Electromagnetic compatibility, upon which the following bodies were represented: Association of Control Manufacturers TACMA
4、 (BEAMA Ltd.) Association of Consulting Engineers Association of Manufacturers of Domestic Electrical Appliances Association of Manufacturers of Power Generating Systems BEAMA Ltd. BEAMA Metering Association British Industrial Truck Association British Lighting Association for the Preparation of Sta
5、ndards (BRITLAPS) British Telecommunications plc Building Automation and Mains Signalling Association (BAMSA) Department of Health Department of Trade and Industry Electrical Installation Equipment Manufacturers Association (BEAMA Ltd.) Electricity Association ERA Technology Ltd. Federation of the E
6、lectronics Industry GAMBICA (BEAMA Ltd.) Health and Safety Executive Induction and Dielectric Heating Manufacturers Association Institution of Electrical Engineers International Association of Broadcasting Manufacturers Lighting Industry Federation Ltd. Ministry of Defence Motor Industry Research As
7、sociation National Air Traffic Services Power Supply Manufacturers Association PSMA (BEAMA Ltd.) Professional Lighting and Sound Association Radiocommunications Agency Rotating Electrical Machines Association (BEAMA Ltd.) Society of British Gas Industries Society of Motor Manufacturers and Traders L
8、td. Transmission and Distribution Association (BEAMA Ltd.) The following bodies were also represented in the drafting of the standard through subcommittee GEL/210/8, EMC Low frequency disturbances. Electrical Contractors Association Heating, Ventilating and Air Conditioning Association British Radio
9、 and Electronic Equipment Manufacturers Association Amendments issued since publication Amd. No. Date CommentsBSIEC1000-2-6:1995 BSI 08-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword v Text of IEC 1000-2-6 1BSIEC1000-2-6:1995 ii BSI 08-1999 National fore
10、word This British Standard reproduces verbatim IEC1000-2-6:1995 and implements it as the UK national standard. This British Standard is published under the direction of the Electrotechnical Sector Board whose Technical Committee GEL/210 has the responsibility to: aid enquirers to understand the text
11、; present to the responsible international committee any enquiries on interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. NOTEInternational and European Standards, as well as overseas standard
12、s, are available from Customer Services, BSI,389 Chiswick High Road, London W44AL. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itsel
13、f confer immunity from legal obligations. Cross-references Publication referred to Corresponding British Standard IEC50(161):1990 BS4727 Glossary of electrotechnical, power, telecommunications, electronics, lighting and colour terms Part1 Terms common to power, telecommunications and electronics Gro
14、up09:1991: Electromagnetic compatibilty IEC146:1991 BS EN60146 Semiconductor converters. General requirements and line commutated converters Part1.1:1993 Specifications of basic requirements Part1.3:1993 Transformers and reactors IEC1000-3-3:1994 BS EN61000 Electromagnetic compatibility (EMC) Part3
15、Limits Section3:1995 Limitation of voltage fluctuations and flicker in low-voltage power supply systems for equipment with rated current less than or equal to16A IEC1000-3-5:1994 BS IEC1000 Electromagnetic compatibility (EMC) Part3 Limits Section 5:1994 Limitation of voltage fluctuations and flicker
16、 in low-voltage power supply systems for equipment with rated current greater than16A Summary of pages This document comprises a front cover, an inside front cover, pagesi and ii, theIEC title page, pages ii to vi, pages1 to50, an inside back cover and abackcover. This standard has been updated (see
17、 copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BSIEC1000-2-6:1995 ii BSI 08-1999 Contents Page Foreword v Introduction 1 1 Scope 1 2 Normative references 1 3 General 2 4 Co-ordination of the emission limits with the
18、compatibility levels 3 5 Definitions 3 6 Survey of conducted emission of industrial equipment 4 7 Harmonics 4 8 Interharmonics 9 9 Three-phase unbalance 11 10 Voltage changes, flicker and voltage dips 13 Annex A (informative) Harmonic emission 25 Annex B (informative) Network impedances for calculat
19、ion of harmonic propagation and evaluation of harmonic voltage components 37 Annex C (informative) Interharmonic line current of indirect convertors 46 Annex D (informative) Three phase unbalance 49 Annex E (informative) Bibliographic references Inside back cover Figure 1 Examples of convertors or l
20、oads producing harmonic or interharmonic a.c. currents 15 Figure 2a Assessment of the resulting supply side impedance Z Leffective for an harmonic source I h 16 Figure 2b Assessment of the resulting harmonic voltage U hat the inplant point of coupling IPC regarding several harmonic current sources I
21、 h1 . I hn , the harmonic level U h0of the supply, the harmonic impedances Z A of the load side, and Z Lof the supply side 16 Figure 3 Diagrams of the interharmonic frequencies in the line current I hhof the a.c. supply produced by harmonic current I ihin the d.c. link. The parameter G is the ratio
22、between I hhand I ih 17 Figure 4 Interharmonic frequencies generated by a direct convertor 18 Figure 5 Measurement of harmonic and interharmonic voltages at the point of common coupling of a5,5MW cycloconvertor drive 19 Figure 6 Measurement of harmonic and interharmonic voltages and currents at the
23、point of common coupling and the6kV terminals of the transformer 20 Figure 7 Subsynchronous cascade 21 Figure 8 Harmonic and interharmonic currents measured on a super/sub-synchronous cascade drive 22 Figure 9 Example of line and continous spectra for arc furnace (amplitude I h /I LNwith respect to
24、the nominal furnace current as a function of harmonic of50Hz, bandwidth1Hz) 23 Figure 10 Steady state and dynamic voltage changes 23 Figure 11 Steady state and dynamic voltage changes 24BSIEC1000-2-6:1995 BSI 08-1999 iii Page Figure A.1 AC supply side thyristor convertor with inductive smoothing and
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