BSI 16/30336914 DC:2016 Edition
$13.70
BS EN 60076-57-129. Convertor transformers. Part 57-129. Transformers for HVDC applications
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 49 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 8 | FOREWORD |
| 10 | 1 Scope 2 Normative references |
| 11 | 2.1 Use of normative references 3 Terms and definitions 3.1 Valve side winding 3.2 Line side winding 3.3 List of variables |
| 12 | 4 General requirements 4.1 Service conditions 4.1.1 General |
| 13 | 4.1.2 Temperature 4.1.3 Load current 4.1.4 AC voltage 4.1.5 Direction of power flow 4.2 Unusual service conditions 4.3 Loading of transformer above rating 5 Rating data 5.1 General 5.2 Rated voltage |
| 14 | 5.3 Rated current 5.4 Rated frequency 5.5 Rated power 6 Losses 6.1 General 6.2 No-load loss 6.3 Load loss under rated frequency conditions 6.4 Load loss under service conditions |
| 15 | 6.5 Determination of hot-spot temperature |
| 16 | 7 Test requirements 7.1 General 7.1.1 Routine tests 7.1.2 Type tests 7.1.3 Special tests 7.1.4 Commissioning tests |
| 17 | 7.2 Test applicability 7.2.1 General 7.2.2 DC withstand voltage test 7.2.3 Polarity reversal test 7.2.4 AC applied withstand test for valve side winding(s) |
| 18 | 7.3 Dielectric test voltage levels 7.3.1 Line windings 7.3.2 Valve windings 7.3.2.1 Lightning impulse levels 7.3.2.2 Switching impulse levels 7.3.2.3 DC withstand voltage level 7.3.2.4 Polarity-reversal level 7.3.2.5 AC applied withstand level with partial discharge measurement 7.4 Induced voltage level with partial discharge measurement |
| 19 | 8 Tests 8.1 General 8.1.1 Test sequence 8.1.2 Ambient temperature 8.1.3 Assembly 8.1.4 Converter transformers for connection to gas-insulated equipment 8.2 Load loss and impedance measurements 8.2.1 General |
| 20 | 8.2.2 Calculation procedure 8.3 Switching impulse test 8.4 Applied switching impulse test on the valve winding 8.5 Lightning impulse tests 8.6 DC withstand voltage test 8.6.1 Applicability |
| 21 | 8.6.2 Transformer test temperature 8.6.3 Polarity 8.6.4 Test procedure 8.6.5 Acceptance criteria 8.7 Polarity reversal test 8.7.1 Applicability 8.7.2 Transformer test temperature 8.7.3 Test procedure |
| 22 | 8.7.4 Acceptance criteria |
| 23 | 8.8 Extended polarity-reversal test 8.8.1 Applicability 8.8.2 Transformer test temperature 8.8.3 Test procedure |
| 25 | 8.8.4 Acceptance criteria 8.9 AC applied voltage test for valve side winding(s) 8.9.1 Test procedure 8.9.2 Acceptance criteria 8.10 AC applied voltage test on line side winding(s) 8.11 AC induced test |
| 26 | 8.11.1 Acceptance criteria 8.12 Induced voltage including running of oil pumps 8.13 Temperature-rise test 8.13.1 Test procedure |
| 27 | 8.13.2 Tank surface temperature rise measurement 8.14 Load-current test 8.15 Sound level measurement (type test) |
| 28 | 8.16 Insulation power-factor test 8.17 Insulation resistance test 8.18 Core insulation resistance test 8.19 Short-circuit test 8.20 Frequency Response Analysis (FRA) measurements 8.21 Over-excitation test |
| 29 | 9 Dielectric tests on transformers that have been in service 10 Sound levels 10.1 General 10.2 Determination of service sound levels 10.3 Guaranteed sound levels |
| 30 | 11 Bushings 11.1 General 11.2 Line side winding bushings 11.3 Valve side winding bushings 12 Tap-changer 12.1 General 12.2 Current wave shape 12.3 Consecutive operation of tap changers 13 High-frequency modelling 14 Tolerances 14.1 General 14.2 Short-circuit impedance tolerances |
| 31 | 15 Rating plate |
| 32 | 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 |
| 34 | A.3 Temperature rise test for demonstrating normal loading condition A.4 Temperature rise test for demonstrating planned overload conditions |
| 36 | Annex B (informative) HVDC converter transformers for use with voltage source converters B.1 Introduction B.2 Converter transformer stressed with only fundamental voltage and current |
| 37 | B.3 Converter transformer stressed with direct voltage, fundamental voltage and fundamental current |
| 38 | B.4 Converter transformer stressed with the valves connected directly to the converter transformer |
| 40 | Annex C (informative) Design review C.1 Introduction C.2 Topics |
| 42 | Annex D (informative) Transformer specification content D.1 Introduction D.2 Data to be provided by the purchaser |
| 43 | D.3 Data to be provided by the manufacturer |
| 44 | Annex E (informative) Audible sound of converter transformers E.1 Introduction E.2 Normative reference E.3 Current harmonics E.4 Voltage harmonics |
| 45 | E.5 DC bias current E.6 Derivation of service sound power levels E.7 Sound level guarantee |
| 46 | Annex F (informative) Determination of transformer service load loss at rated non-sinusoidal converter current from measurements with rated transformer current of fundamental frequency F.1 General |
| 47 | F.2 Alternative method for calculation of the winding eddy loss enhancement factor |
| 49 | Bibliography |
