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IEC 60034-33 Edition 1.0 2022-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Ro

IEC 60034-33 Edition 1.0 2022-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Rotating electrical machines – Part 33: Synchronous hydrogenerators including motor-generators – Specific requirements Machines électriques tournantes – Partie 33: Hydro-génératrices synchrones y compris les groupes moteur- générateurs – Exigences spécifiques INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 29.160.01; 29.160.20 ISBN 978-2-8322-1071-2 ® Registered trademark of the International Electrotechnical Commission Marque déposée de la Commission Electrotechnique 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 agréé. This is a preview - click here to buy the full publication – 2 – IEC 60034-33:2022 © IEC 2022 CONTENTS FOREWORD ........................................................................................................................... 6 1 Scope .............................................................................................................................. 8 2 Normative references ...................................................................................................... 8 3 Terms and definitions ...................................................................................................... 9 4 Site operation conditions ............................................................................................... 11 5 Ratings and parameters................................................................................................. 11 5.1 Output................................................................................................................... 11 5.1.1 Output rating of a hydrogenerator .................................................................. 11 5.1.2 Output ratings of a motor-generator ............................................................... 11 5.1.3 Increase in active power ................................................................................ 11 5.1.4 Under-excited operation ................................................................................ 11 5.2 Rated voltage ....................................................................................................... 12 5.3 Rated power factor................................................................................................ 12 5.4 Rated speed ......................................................................................................... 12 5.5 P-Q capability diagram .......................................................................................... 12 5.6 Voltage and frequency variations during operation ................................................ 13 5.7 Efficiency and losses ............................................................................................ 15 5.7.1 Weighted average efficiency .......................................................................... 15 5.7.2 Losses ........................................................................................................... 15 5.7.3 Determination of winding losses .................................................................... 16 5.7.4 Windage Losses ............................................................................................ 16 5.7.5 Determination of thrust bearing losses for vertical machines .......................... 16 5.7.6 Tolerance of the total losses .......................................................................... 17 5.8 Electrical parameters and time constants .............................................................. 17 5.8.1 Short-circuit ratio ........................................................................................... 17 5.8.2 Direct axis transient and subtransient reactances .......................................... 17 5.8.3 General case ................................................................................................. 18 5.9 Tolerances on reactance ....................................................................................... 18 5.10 Total harmonic distortion (THD) ............................................................................ 18 5.11 Torques ................................................................................................................ 18 6 Temperature .................................................................................................................. 18 6.1 Temperature rise .................................................................................................. 18 6.2 Measurements for the stator winding ..................................................................... 19 6.3 Measurements for the stator core .......................................................................... 20 6.4 Correction due to deviation from reference operation ............................................ 20 6.5 Bearing temperature ............................................................................................. 21 7 Operating performances and electrical connections ....................................................... 21 7.1 Special operational requirements .......................................................................... 21 7.1.1 Stator overload current .................................................................................. 21 7.1.2 Rotor overload current ................................................................................... 21 7.1.3 Continuous unbalanced load .......................................................................... 21 7.1.4 Short time unbalanced load ........................................................................... 22 7.1.5 Mechanical output overload ........................................................................... 22 7.1.6 Sudden short circuit ....................................................................................... 22 7.2 Connection to grid ................................................................................................. 23 7.2.1 Synchronization ............................................................................................. 23 This is a preview - click here to buy the full publication IEC 60034-33:2022 © IEC 2022 – 3 – 7.2.2 Application of load ......................................................................................... 23 7.3 Starting of motor-generator ................................................................................... 23 7.4 System earthing .................................................................................................... 24 7.5 Neutral point leads ................................................................................................ 25 7.6 Rotating direction and phase sequence ................................................................. 25 7.7 Stator winding ....................................................................................................... 25 8 Winding insulation ......................................................................................................... 25 8.1 Winding insulation performance ............................................................................ 25 8.1.1 General ......................................................................................................... 25 8.1.2 Winding insulation resistance ........................................................................ 25 8.1.3 Dielectric dissipation factor measurements on new stator bars or coils .......... 26 8.1.4 Partial discharge measurements for stator winding ........................................ 27 8.1.5 Voltage withstand test for turn insulation of multi-turn coil for stator............... 27 8.2 Voltage withstand tests ......................................................................................... 27 8.2.1 Stator bars/coils ............................................................................................ 27 8.2.2 Inserted stator bars/coils ............................................................................... 27 8.2.3 Stator winding completed before rotor inserted .............................................. 27 8.2.4 Field winding before delivery ......................................................................... 27 8.2.5 Field winding completed ................................................................................ 28 8.2.6 Stator winding for completed machine ........................................................... 28 8.2.7 Field winding for completed machine ............................................................. 28 8.2.8 DC alternative tests ....................................................................................... 28 8.2.9 Global VPI stators ......................................................................................... 28 8.3 Breakdown test for insulation ................................................................................ 28 8.4 Voltage endurance test for insulation .................................................................... 29 8.5 Thermal cycle test ................................................................................................. 30 8.6 Stator winding terminals ........................................................................................ 30 9 Mechanical performances and design ............................................................................ 30 9.1 Rotating part mass moment of inertia .................................................................... 30 9.2 Maximum speed .................................................................................................... 30 9.3 Structural strength ................................................................................................ 30 9.4 Critical bending speed .......................................................................................... 31 9.5 Start and stop of motor-generators ........................................................................ 31 9.6 Start and stop of hydrogenerators ......................................................................... 31 9.7 Over speed ........................................................................................................... 31 9.8 Fatigue verification ............................................................................................... 32 10 Core vibration ................................................................................................................ 32 11 Noise ............................................................................................................................. 32 12 Basic structural requirements ........................................................................................ 34 12.1 General layout ...................................................................................................... 34 12.1.1 Structure and general layout of the machines ................................................ 34 12.1.2 Machine components ..................................................................................... 34 12.1.3 Hydraulic or pneumatic braking system .......................................................... 34 12.1.4 Hydraulic jacking system ............................................................................... 34 12.1.5 Dynamical (electrical) braking ........................................................................ 34 12.2 Stator .................................................................................................................... 34 12.2.1 Frame and core structure ............................................................................... 34 12.2.2 Stator frame connecting structure .................................................................. 35 This is a preview - click here to buy the full publication – 4 – IEC 60034-33:2022 © IEC 2022 12.2.3 Stator end winding ......................................................................................... 35 12.3 Rotor .................................................................................................................... 35 12.3.1 Damper winding ............................................................................................. 35 12.3.2 Structure with one shaft or segmented shafts ................................................ 35 12.4 Structure tolerance ............................................................................................... 35 12.5 Bearings ............................................................................................................... 35 12.5.1 Bearing alloy ................................................................................................. 35 12.5.2 Bearing lubricant ........................................................................................... 35 12.5.3 Shaft currents ................................................................................................ 35 12.5.4 Bearing insulation resistance ......................................................................... 36 13 Ventilation and cooling system ...................................................................................... 36 13.1 Cooling scheme .................................................................................................... 36 13.1.1 General ......................................................................................................... 36 13.1.2 Air cooling system ......................................................................................... 36 13.1.3 Evaporative cooling system ........................................................................... 36 13.1.4 Water cooling system .................................................................................... 36 13.2 Redundancy on the design of coolers and motor fans ........................................... 37 13.3 Cooling structure .................................................................................................. 37 13.3.1 Materials ....................................................................................................... 37 13.3.2 Water supply and drainage ............................................................................ 37 13.3.3 Cooling water pressure .................................................................................. 37 14 Instrumentation required for protection and control ........................................................ 37 14.1 General ................................................................................................................. 37 14.2 Stator and bearing temperature............................................................................. 37 14.3 Bearing vibration and shaft displacement .............................................................. 38 15 Condition monitoring of machines .................................................................................. 38 15.1 General ................................................................................................................. 38 15.2 Instrumentation required for condition monitoring .................................................. 39 16 Marking ......................................................................................................................... 39 16.1 Information to be marked on machine nameplate: ................................................. 39 16.2 Repaired or refurbished machines......................................................................... 40 17 Factory and site tests .................................................................................................... 40 Annex A (informative) Special tools ..................................................................................... 41 Annex B (informative) Correction of measured windage losses on the machines .................. 42 Annex C (informative) Correction of measured bearing losses for different oil bath temperatures ........................................................................................................................ 45 Annex D (informative) Scope of supply ................................................................................ 47 Annex E (informative) Test run and guaranteed period ......................................................... 48 E.1 72 h test run ......................................................................................................... 48 E.2 15~30-day examination test run for motor-generators ........................................... 48 E.3 Handover and guarantee period ............................................................................ 48 Annex F (informative) Test items ......................................................................................... 49 F.1 Inspection test for hydrogenerator and motor-generator in factory ......................... 49 F.2 Site routine test of hydrogenerator and motor-generator ....................................... 49 F.3 Startup test run of hydrogenerator and motor-generator ........................................ 50 F.4 Performance test of hydrogenerator ...................................................................... 50 Annex G (informative) Condition monitoring ......................................................................... 51 G.1 Air gap distance .................................................................................................... 51 This is a preview - click here to buy the full publication IEC 60034-33:2022 © IEC 2022 – 5 – G.2 Core and frame vibration ....................................................................................... 51 G.3 Stator end winding vibration .................................................................................. 51 G.4 Partial discharge ................................................................................................... 51 G.5 Air gap magnetic flux ............................................................................................ 52 G.6 Others................................................................................................................... 52 Bibliography .......................................................................................................................... 53 Figure 1 – P-Q capability in p.u. ............................................................................................ 13 Figure 2 – Voltage and frequency limits for hydro machines .................................................. 14 Figure 3 – Location of measuring points in the horizontal plane ............................................ 33 Table 1 – Preferred speed for 50 Hz machines ..................................................................... 12 Table 2 – Preferred speed for 60 Hz machines ..................................................................... 12 Table 3 – Reference temperature .......................................................................................... 16 Table 4 – Temperature rise limits .......................................................................................... 19 Table 5 – Permitted overload current multiple vs. time duration ............................................ 21 Table 6 – Permitted negative phase sequence current for the machines ............................... 22 Table 7 – Permitted negative phase sequence current for the machines ............................... 22 Table 8 – Material properties for grounding connectors ......................................................... 24 Table 9 – Test voltage for insulating resistance measurement .............................................. 26 Table 10 – Dielectric dissipation factor.................................................................................. 26 Table 11 – Testing values for voltage withstand test of field winding ..................................... 28 Table 12 – Test voltage and time limits ................................................................................. 29 Table 13 – Limits for vibration in the core ............................................................................. 32 Table 14 – Temperature sensor locations ............................................................................. 38 Table A.1 – Special tools ...................................................................................................... 41 This is a preview - click here to buy the full publication – 6 – IEC 60034-33:2022 © IEC 2022 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________ ROTATING ELECTRICAL MACHINES – Part 33: Synchronous hydrogenerators including motor-generators – Specific requirements FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly uploads/Industriel/international-standard-norme-internationale 10 .pdf