1、 IEC 61378-1 Edition 2.0 2011-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Converter transformers Part 1: Transformers for industrial applications Transformateurs de conversion - Partie 1: Transformateurs pour applications industrielles IEC 61378-1:2011-07(en-fr) colour inside THIS PUBLICATION IS
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19、onner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 61378-1 Edition 2.0 2011-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Converter transformers Part 1: Transformers for industrial applications Transformateurs de conversion - Partie 1: Transfor
20、mateurs pour applications industrielles INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XC ICS 29.180 PRICE CODE CODE PRIX ISBN 978-2-8322-1698-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique
21、Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colour inside 2 IEC 61378-1:2011 IEC 2011 CONTENTS FOREWORD . 6 1 Scope . 8 2 Normative references 9 3
22、 Terms, definitions and acronyms . 9 3.1 Terms and definitions 9 3.2 Acronyms 10 4 Classification 11 4.1 General . 11 4.2 Normal service conditions 11 4.3 Provision for unusual service conditions . 12 5 Ratings . 12 5.1 General . 12 5.2 Rated power at rated frequency and load capability 12 5.3 Rated
23、 and service voltages 13 5.3.1 Transformer energized from an a.c. power system . 13 5.3.2 Transformer energized from a converter/inverter with or without variable frequency . 13 5.4 Rated current 13 5.5 Phase displacement and terminal identification for three-phase transformer . 13 5.6 Rating plate
24、. 14 5.7 Units with tertiary windings loaded with filter and compensation 14 5.8 On load tap-changers 15 6 Load loss and voltage drop in transformers and reactors . 15 6.1 General . 15 6.2 Determination of transformer load loss under distorted current loading . 15 6.3 Current sharing, losses and hot
25、 spot in high current windings . 19 6.4 Effect of geometrical winding arrangement and magnetic coupling between windings on their eddy current losses due to harmonics in transformers with three or more windings wound on the same core limb 20 6.5 Losses in interphase transformers, current-balancing r
26、eactors, series- smoothing reactors and transductors . 26 6.5.1 General . 26 6.5.2 Interphase transformers . 26 6.5.3 Current-balancing reactors . 26 6.5.4 Series-smoothing reactors . 26 6.5.5 Transductors . 26 6.6 Voltage drops in transformers and reactors 27 6.6.1 General . 27 6.6.2 Transductors .
27、 28 7 Tests for converter transformers . 29 7.1 General . 29 7.2 Measurement of commutating reactance and determination of the inductive voltage drop 30 7.2.1 Commutating reactance . 30 7.2.2 Inductive voltage regulation 30 7.3 Measurement of voltage ratio and phase displacement . 31 7.4 Dielectric
28、tests . 31 IEC 61378-1:2011 IEC 2011 3 7.4.1 General . 31 7.4.2 Dielectric test between interleaved valve windings 31 7.5 Load loss test 32 7.5.1 General . 32 7.5.2 Load loss measurement in rectifier transformers with transductors in the same tank 32 7.5.3 Test bus bars configuration for short circu
29、it of high current valve windings 32 7.6 Temperature rise tests . 32 7.6.1 General . 32 7.6.2 Total loss injection . 33 7.6.3 Rated load loss injection 33 7.6.4 Test of temperature rise on dry-type transformers 35 8 On load noise level with transductors and/or IPT . 35 Annex A (informative) Determin
30、ation of transformer service load loss at rated non- sinusoidal converter current from measurements with rated transformer current of fundamental frequency 38 Annex B (informative) Short-circuit test currents and load losses in transformers for single-way converters (total loss injection) . 56 Annex
31、 C (informative) Current sharing measurement in high current valve windings 57 Annex D (informative) Examples of duty cycles . 66 Annex E (informative) Guidelines for design review 67 Annex F (informative) Determination of loss in transformer tank due to magnetic field. 3D simulation and guidelines
32、for tank losses evaluation and tank hotspot calculation 70 Annex G (informative) Short-circuit measurements of rectifier transformers equipped with built in transductors 71 Annex H (informative) Determination of the transformer voltage ratio and phase displacement by the turn ratio measurements 73 A
33、nnex I (informative) Phase displacement connections and terminal indications of converter transformers 78 Annex J (normative) Correlation between IEC 61378-1 and IEC 60146-1-1 ratings 83 Bibliography 90 Figure 1 B6U or DB 6 pulse double bridge connection . 10 Figure 2 DSS 6 pulse connection 11 Figur
34、e 3 Leakage fields for a three-winding transformer with closely coupled valve windings 22 Figure 4 Leakage fields for a three-winding transformer with decoupled valve windings 23 Figure 5 Leakage fields for a three winding transformer with loosely coupled double concentric valve windings 24 Figure 6
35、 Leakage fields for a three winding transformer with loosely coupled double- tier valve windings . 25 Figure 7 Typical transductor regulating curve (with max voltage drop at zero control current) and tolerance band 28 Figure A.1 Cross-section of a winding strand . 40 Figure A.2 Terminal identificati
36、on for winding connection Y y0y6 . 43 Figure A.3 Terminal identification for winding connection D d0y1 46 Figure A.4 Valve current DB connection rectangular shape positive shape 47 4 IEC 61378-1:2011 IEC 2011 Figure A.5 Valve current DB connection rectangular shape positive and negative shape 48 Fig
37、ure A.6 Valve current DSS connection rectangular shape . 52 Figure C.1 Example of valve high current winding and measurement equipment disposition 58 Figure C.2 Transformer windings arrangement . 59 Figure C.3 Measurement circuit for the in-phase measurement . 60 Figure C.4 Measurement circuit for t
38、he in-opposition measurement. 61 Figure C.5 Measurements and comparison with the simulations made by finite element method software for the in-phase current distribution 63 Figure C.6 Measurements and comparison with the simulations made by finite element method software for the in-opposition curren
39、t distribution . 65 Figure H.1 Yd1 connection . 74 Figure H.2 Yd11 connection . 74 Figure H.3 Pd0+7,5 connection . 75 Figure H.4 Oscilloscope connection 76 Figure H.5 Oscilloscope with phase B + 7,5 lag referring to phase A . 76 Figure H.6 Oscilloscope with phase B 7,5 lead referring to phase A . 77
40、 Figure I.1 Counterclockwise phase displacement 78 Figure I.2 Yd11 connection . 78 Figure I.3 Yd1 connection . 78 Figure I.4 Example I.1 phase displacement . 79 Figure I.5 Example I.2 phase displacement . 79 Figure J.1 DB connection ideal rectangular current blocks 83 Figure J.2 DSS Connection recta
41、ngular current blocks 84 Table 1 Connections and calculation factors . 36 Table A.1 Specified harmonic currents and phase displacement in the valve windings . 41 Table A.2 Resistance measurements at 20 C winding temperature 42 Table A.3 Specified harmonic currents and phase displacement in the line
42、and valve windings 45 Table A.4 Measurements from test report . 46 Table A.5 Resulting current harmonics . 48 Table A.6 Resulting current harmonics . 49 Table A.7 Resulting current harmonics . 50 Table A.8 Detailed transformer load losses at rated tap position, with tertiary unloaded . 51 Table A.9
43、Resulting current harmonics . 52 Table A.10 Specified harmonic currents and phase displacement in the line and valve windings 53 Table A.11 Resulting current harmonics . 54 Table A.12 Detailed transformer load losses at rated tap position, with tertiary unloaded . 55 Table C.1 Measurements and compa
44、rison with the simulations made by finite element method software for the in-phase current distribution . 62 Table C.2 Measurements and comparison with the simulations made by finite element method software for the in-opposition current distribution 64 IEC 61378-1:2011 IEC 2011 5 Table D.1 Examples
45、of duty cycles for different applications . 66 Table H.1 Single phase ratio measurements . 73 Table J.1 Harmonics content up to 25 thin DB 6 pulse connection (ideal rectangular current waveshape) . 84 Table J.2 Harmonics content up to 25 thin DSS 6 pulse connection (ideal rectangular current wavesha
46、pe) . 85 Table J.3 Calculation factor comparison example . 86 Table J.4 Calculation factor comparison general factors . 87 6 IEC 61378-1:2011 IEC 2011 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ CONVERTER TRANSFORMERS Part 1: Transformers for industrial applications FOREWORD 1) The International Ele
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