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IEC 60034-33:2022

(Main)

Rotating electrical machines - Part 33: Synchronous hydrogenerators including motor-generators - Specific requirements

Rotating electrical machines - Part 33: Synchronous hydrogenerators including motor-generators - Specific requirements

IEC 60034-33:2022 applies to three-phase salient-pole synchronous generators and synchronous motor-generators for hydraulic turbine and pump-turbine applications, that have rated frequency of 50 Hz or 60 Hz, rated output of 10 MVA and above, pole pair number 3 and above, and rated voltage of 6 kV and above. This document supplements basic requirements for rotating machines given in IEC 60034-1.

Machines électriques tournantes - Partie 33 : Hydro-génératrices synchrones y compris les groupes moteur-générateurs – Exigences spécifiques

IEC 60034-33:2022 s'applique aux génératrices synchrones triphasées à pôles saillants et aux groupes moteur-générateurs synchrones pour les applications de turbines hydrauliques et de pompes-turbines, qui ont une fréquence assignée de 50 Hz ou 60 Hz, une sortie assignée supérieure ou égale à 10 MVA, un nombre de paires de pôles supérieur ou égal à 3, et une tension assignée supérieure ou égale à 6 kV.
Le présent document complète les exigences principales pour les machines tournantes données dans l’IEC 60034-1.

General Information

Status
Published
Publication Date
27-Jan-2022
ICS
29.160.01 - Rotating machinery in general
29.160.20 - Generators
Technical Committee
TC 2 - Rotating machinery
Drafting Committee
WG 33 - TC 2/WG 33
Current Stage
PPUB - Publication issued
Start Date
25-Feb-2022
Completion Date
28-Jan-2022
Ref Project

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IEC 60034-33:2022 - Rotating electrical machines - Part 33: Synchronous hydrogenerators including motor-generators - Specific requirementsIEC 60034-33:2022 - Rotating electrical machines - Part 33: Synchronous hydrogenerators including motor-generators - Specific requirements
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IEC 60034-33:2022 - Rotating electrical machines - Part 33: Synchronous hydrogenerators including motor-generators - Specific requirements
English and French language
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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

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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

– 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

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
...

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