IEEE IEC 60076 57 129 2017
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IEC/IEEE International Standard – Power transformers–Part 57-129: Transformers for HVDC applications
| Published By | Publication Date | Number of Pages |
| IEEE | 2017 | 58 |
Revision Standard – Active.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | IEC/IEEE 60076-57-129-2017 Front Cover |
| 4 | CONTENTS |
| 8 | FOREWORD |
| 10 | 1 Scope 2 Normative references 2.1 IEC references |
| 11 | 2.2 IEEE references 3 Terms, definitions and symbols 3.1 Terms and definitions |
| 12 | 3.2 Symbols |
| 13 | 4 Use of normative references 5 General requirements 5.1 General 5.2 Service conditions 5.2.1 General 5.2.2 Temperature 5.2.3 Load current 5.2.4 AC voltage 5.2.5 Direction of power flow |
| 14 | 5.3 Unusual service conditions 5.4 Loading of transformer above rating 6 Rating data 6.1 General 6.2 Rated voltage 6.3 Rated current 6.4 Rated frequency 6.5 Rated power |
| 15 | 7 Losses 7.1 General 7.2 No-load loss 7.3 Load loss under rated frequency conditions 7.4 Load loss under service conditions |
| 16 | 7.5 Determination of hot-spot temperature |
| 17 | 8 Test requirements 8.1 General 8.1.1 Routine tests 8.1.2 Type tests 8.1.3 Special tests 8.1.4 Commissioning tests Tables Table 1 – Routine, type and special tests |
| 18 | 8.2 Test applicability 8.2.1 General 8.2.2 DC withstand voltage test 8.2.3 Polarity reversal test 8.2.4 AC applied withstand test for valve side winding(s) |
| 19 | 8.3 Dielectric test voltage levels 8.3.1 Line windings 8.3.2 Valve windings |
| 20 | 8.4 Induced voltage level with partial discharge measurement 9 Tests 9.1 General 9.1.1 Applicable tests 9.1.2 Test sequence 9.1.3 Ambient temperature 9.1.4 Assembly |
| 21 | 9.1.5 Converter transformers for connection to gas-insulated equipment 9.2 Load loss and impedance measurements 9.2.1 General 9.2.2 Calculation procedure |
| 22 | 9.3 Switching impulse test 9.4 Applied switching impulse test on the valve side winding 9.5 Lightning impulse tests 9.6 DC withstand voltage test 9.6.1 Applicability 9.6.2 Transformer test temperature 9.6.3 Polarity |
| 23 | 9.6.4 Test procedure 9.6.5 Acceptance criteria 9.7 Polarity reversal test 9.7.1 Applicability 9.7.2 Transformer test temperature 9.7.3 Test procedure |
| 24 | 9.7.4 Acceptance criteria Figures Figure 1 – Double reversal test voltage profile |
| 25 | 9.8 Extended polarity-reversal test 9.8.1 Applicability 9.8.2 Transformer test temperature 9.8.3 Test procedure |
| 26 | Figure 2 – Extended polarity reversal test alternative 1 Figure 3 – Extended polarity reversal test alternative 2 |
| 27 | 9.8.4 Acceptance criteria 9.9 AC applied voltage test for valve side winding(s) 9.9.1 Test procedure 9.9.2 Acceptance criteria 9.10 AC applied voltage test on line side winding(s) |
| 28 | 9.11 AC induced voltage test with partial discharge measurement 9.11.1 General 9.11.2 Acceptance criteria 9.12 Induced voltage test including running of oil pumps 9.13 Temperature-rise test 9.13.1 General |
| 29 | 9.13.2 Test procedure |
| 30 | 9.13.3 Tank surface temperature rise measurement 9.14 Load current test 9.15 Sound level measurement |
| 31 | 9.16 Insulation power-factor test 9.17 Winding insulation resistance test 9.18 Core insulation resistance test 9.19 Short-circuit test 9.20 Frequency Response Analysis (FRA) measurements 9.21 Over-excitation test 10 Dielectric tests on transformers that have been in service |
| 32 | 11 Sound levels 11.1 General 11.2 Determination of service sound levels 11.3 Guaranteed sound levels 12 Bushings 12.1 General |
| 33 | 12.2 Line side winding bushings 12.3 Valve side winding bushings 13 Tap-changer 13.1 General 13.2 Current wave shape 13.3 Consecutive operation of tap-changers 14 High-frequency modelling |
| 34 | 15 Tolerances 15.1 General 15.2 Short-circuit impedance tolerances 16 Rating plate |
| 36 | Annex A (informative)In service overloading of HVDC converter transformers used with current commutated valves (either mercury arc valves or thyristors) A.1 General A.2 Overloading in service |
| 37 | Table A.1 – Example of an overload table |
| 38 | A.3 Temperature rise test for demonstrating normal loading condition A.4 Temperature rise test for demonstrating planned overload conditions Figure A.1 – Example of an overload diagram |
| 40 | Annex B (informative)HVDC converter transformers for use with voltage source converters B.1 General B.2 Converter transformer stressed with only fundamental voltage and current |
| 41 | B.3 Converter transformers stressed with direct voltage, fundamental voltage and fundamental current Figure B.1 – Configuration with no additional stresses on the converter transformer |
| 42 | B.4 Converter transformer stressed with the valves connected directly to the converter transformer Figure B.2 – Configuration with multi-level VSC HVDC converter station appliedin a monopolar scheme with DC overhead line transmission |
| 43 | B.5 Summary of stresses Figure B.3 – Configuration with VSC valves connected directlyto the converter transformer |
| 44 | Annex C (informative)Design review C.1 General C.2 Topics |
| 46 | Annex D (informative)Transformer specification content D.1 General D.2 Data to be provided by the purchaser |
| 47 | D.3 Data to be provided by the manufacturer |
| 49 | Annex E (informative)Audible sound of converter transformers E.1 General E.2 Technical reference E.3 Current harmonics E.4 Voltage harmonics |
| 50 | E.5 DC bias current E.6 Derivation of service sound power levels E.7 Sound level guarantee |
| 51 | Annex F (informative)Determination of transformer service load loss atrated non-sinusoidal converter current from measurementswith rated transformer current of fundamental frequency F.1 General |
| 52 | F.2 Alternative method for calculation of the winding eddy loss enhancement factor |
| 53 | Figure F.1 – Cross-section of a winding strand |
| 54 | Bibliography |
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