1、BRITISH STANDARDBS EN 60034-3:2008Rotating electrical machines Part 3: Specific requirements for synchronous generators driven by steam turbines or combustion gas turbinesICS 29.160.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g
2、3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 60034-3:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2008 BSI 2008ISBN 978 0 580 57096 4National forewordThis British Standard is th
3、e UK implementation of EN 60034-3:2008. It is identical to IEC 60034-3:2007. It supersedes BS EN 60034-3:2005, which will be withdrawn on 1 June 2011.The UK participation in its preparation was entrusted to Technical Committee PEL/2, Rotating electrical machinery.A list of organizations represented
4、on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrige
5、nda issued since publicationDate CommentsEUROPEAN STANDARD EN 60034-3 NORME EUROPENNE EUROPISCHE NORM July 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de
6、 Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60034-3:2008 E ICS 29.160 Supersedes EN 60034-3:2005English version Rotating electrical machines - Part 3: Specific requirements for synchronous
7、generators driven by steam turbines or combustion gas turbines (IEC 60034-3:2007) Machines lectriques tournantes - Partie 3: Rgles spcifiques pour les alternateurs synchrones entrans par turbines vapeur ou par turbines gaz combustion (CEI 60034-3:2007) Drehende elektrische Maschinen - Teil 3: Besond
8、ere Anforderungen an Synchrongeneratoren angetrieben durch Dampfturbinen oder Gasturbinen (IEC 60034-3:2007) This European Standard was approved by CENELEC on 2008-06-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Euro
9、pean Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (Eng
10、lish, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria,
11、 Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Forew
12、ord The text of document 2/1461/FDIS, future edition 6 of IEC 60034-3, prepared by IEC TC 2, Rotating machinery, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60034-3 on 2008-06-01. This European Standard supersedes EN 60034-3:2005. The significant technical change
13、s with respect to EN 60034-3:2005 are as follows: the contents is now restricted to synchronous generators driven by steam turbines or combustion gas turbines, but covers as well cylindrical rotor and salient-pole generators; synchronous motors have been taken out of the scope of Part 3. The followi
14、ng dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-06-01 Annex ZA has been add
15、ed by CENELEC. _ Endorsement notice The text of the International Standard IEC 60034-3:2007 was approved by CENELEC as a European Standard without any modification. _ BS EN 60034-3:2008 2 CONTENTS 1 Scope.5 2 Normative references .5 3 Terms and definitions .5 4 General 6 4.1 General rules 6 4.2 Rate
16、d conditions .6 4.3 Rated voltage6 4.4 Power factor6 4.5 Rated speed6 4.6 Ranges of voltage and frequency 7 4.7 Direction of rotation.7 4.8 Stator winding .8 4.9 Generator rated field current and voltage 8 4.10 Winding insulation .8 4.10.1 Thermal class8 4.10.2 Withstand voltage tests .8 4.11 Insula
17、tion against shaft current8 4.12 Over-speed test.8 4.13 Critical speeds 8 4.14 P-Q capability diagram 8 4.15 Overcurrent requirements10 4.16 Sudden short circuit 10 4.17 Short-circuit ratio.11 4.18 Direct axis transient and subtransient reactances for generators .11 4.19 Tolerances on short-circuit
18、ratio and direct axis transient and subtransient reactances 11 4.20 Mechanical conditions for rotors 11 4.20.1 Number of starts11 4.20.2 Turning gear operation 11 4.21 Coolers .12 5 Air-cooled generators .12 5.1 General .12 5.2 Generator cooling12 5.3 Temperature of primary coolant.12 5.3.1 Temperat
19、ure detectors 13 6 Hydrogen-cooled or liquid-cooled generators13 6.1 General .13 6.2 Hydrogen pressure and purity in the casing.13 6.3 Generator housing and cover plates 13 6.4 Stator winding terminals 13 6.5 Temperature of primary coolants, temperatures and temperature rises of the generator 13 6.6
20、 Temperature detectors 14 6.7 Auxiliary system 14 BS EN 60034-3:2008 3 7 Generators for combustion gas turbines or combined cycle applications.15 7.1 General .15 7.2 Service conditions .15 7.2.1 General .15 7.2.2 Primary coolant temperature15 7.2.3 Number of starts15 7.2.4 Application of load.15 7.3
21、 Rated output .15 7.4 Capabilities .16 7.4.1 General .16 7.4.2 Base capability 16 7.4.3 Temperature rise and temperature at base capability.17 7.4.4 Peak capability 18 7.5 Rating plate.18 7.6 Temperature tests .18 Annex A (normative) Precautions to be taken when using hydrogen cooled turbine-driven
22、synchronous generators .19 Bibliography26 Figure 1 Operation over ranges of voltage and frequency 7 Figure 2 Typical P-Q capability diagram.9 Figure 3 Typical generator capability curves 17 Figure A.1 Example of a large hydrogen supply unit feeding one or more generators (simplified diagram) 25 BS E
23、N 60034-3:2008 4 Annex ZA (normative) Normative references to international publications with theircorresponding European publications.27 ROTATING ELECTRICAL MACHINES Part 3: Specific requirements for synchronous generators driven by steam turbines or combustion gas turbines 1 Scope This part of IEC
24、 60034 applies to three-phase synchronous generators, having rated outputs of 10 MVA and above driven by steam turbines or combustion gas turbines. It supplements the basic requirements for rotating machines given in IEC 60034-1. Common requirements are prescribed together with specific requirements
25、 for air, for hydrogen or for liquid cooled synchronous generators. This part of IEC 60034 also gives the precautions to be taken when using hydrogen cooled generators including: rotating exciters driven by synchronous generators; auxiliary equipment needed for operating the generators; parts of the
26、 building where hydrogen might accumulate. NOTE 1 These requirements also apply to a synchronous generator driven by both a steam turbine and a combustion gas turbine as part of a single shaft combined cycle unit. NOTE 2 These requirements do not apply to synchronous generators driven by water (hydr
27、aulic) turbine or wind turbine. NOTE 3 The precautions to be taken when using hydrogen are valid for all cases where hydrogen is used as a coolant. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition
28、 cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60034-1, Rotating electrical machines Part 1: Rating and performance IEC 60034-4, Rotating electrical machines Part 4: Methods for determining synchronous machine quantities
29、from tests IEC 60045-1, Steam turbines Part 1: Specifications IEC 60079 (all parts), Electrical apparatus for explosive gas atmospheres 3 Terms and definitions For the purposes of this document, the terms and definitions in IEC 60034-1 together with the following additions apply. BS EN 60034-3:2008
30、5 3.1 mechanical start change in speed from zero or turning gear speed to rated speed 3.2 turning gear operation rotation at low speed to maintain thermal equilibrium of the turbine and/or rotor 4 General 4.1 General rules Turbine driven synchronous generators shall be in accordance with the basic r
31、equirements for rotating machines specified in IEC 60034-1 unless otherwise specified in this standard. Wherever in this standard there is reference to an agreement, it shall be understood that this is an agreement between the manufacturer and the purchaser. 4.2 Rated conditions The rated conditions
32、 are given by the rated values of the apparent power; frequency; voltage; power factor; primary coolant temperature (40C unless otherwise agreed upon); and where applicable, site altitude; hydrogen pressure; range of hydrogen purity, see IEC 60034-1. 4.3 Rated voltage The rated voltage shall be fixe
33、d by agreement. 4.4 Power factor The power factor shall be agreed upon between the purchaser and manufacturer. Standardised rated power factors at the generator terminals are 0,8, 0,85 and 0,9 overexcited. NOTE 1 Other values may be agreed upon, the lower the power factor the larger will be the gene
34、rator. NOTE 2 It is recommended that the generator should be capable of providing 0,95 underexcited power factor at rated MW. 4.5 Rated speed The rated speed shall be 3 000/p min1for 50 Hz generators; 3 600/p min1for 60 Hz generators; where p is the number of pole pairs. BS EN 60034-3:2008 6 4.6 Ran
35、ges of voltage and frequency Generators shall be capable of continuous rated output at the rated power factor over the ranges of 5 % in voltage and 2 % in frequency, as defined by the shaded area of Figure 1. The temperature rise limits in Tables 7 and 8, or the temperature limits in Table 12 of IEC
36、 60034-1 shall apply at the rated voltage and frequency only. NOTE 1 As the operating point moves away from the rated values of voltage and frequency, the temperature rise or total temperatures may progressively increase. Continuous operation at rated output at certain parts of the boundary of the s
37、haded area causes temperature rises to increase by up to 10 K approximately. Generators will also carry output at rated power factor within the ranges of 5 % in voltage and 35+% in frequency, as defined by the outer boundary of Figure 1, but temperature rises will be further increased. Therefore, to
38、 minimize the reduction of the generators lifetime due to the effects of temperature or temperature differences, operation outside the shaded area should be limited in extent, duration and frequency of occurrence. The output should be reduced or other corrective measures taken as soon as practicable
39、. If an operation over a still wider range of voltage or frequency or deviations from rated frequency and voltage are required, this should be the subject of an agreement. NOTE 2 It is considered that overvoltage together with low frequency, or low voltage with over-frequency, are unlikely operating
40、 conditions. The former is the condition most likely to increase the temperature rise of the field winding. Figure 1 shows operation in these quadrants restricted to conditions that will cause the generator and its transformer to be over- or under-fluxed by no more than 5 %. Margins of excitation an
41、d of stability will be reduced under some of the operating conditions shown. As the operating frequency moves away from the rated frequency, effects outside the generator may become important and need to be considered. As examples: the turbine manufacturer will specify ranges of frequency and corres
42、ponding periods during which the turbine can operate; and the ability of auxiliary equipment to operate over a range of voltage and frequency should be considered. 10510398 100 102 10398979595 f %V %IEC 082/05Figure 1 Operation over ranges of voltage and frequency 4.7 Direction of rotation The direc
43、tion of rotation shall be shown on the generator or on its rating plate, and the time-phase sequence of the stator voltage shall then be indicated by marking the terminals in the sequence in which their voltages reach maximum, for example, U1, V1, W1. NOTE Terminal markings may not be consistent wit
44、h IEC 60034-8. BS EN 60034-3:2008 7 For generators having one driving end, this shall be the reference end for the direction of rotation. For generators having two drive ends, the more powerful drive end shall be the reference end. If not applicable, the end opposite to the excitation leads shall be
45、 the reference end for the direction of rotation. The sense of rotation (clockwise or counter-clockwise) shall be defined when facing the generator rotor coupling from the reference side. 4.8 Stator winding Unless otherwise agreed upon, rated generator voltage corresponds to star connection. All win
46、ding ends shall be brought out and arranged in an agreed arrangement of the external connections to the generator. 4.9 Generator rated field current and voltage The generator rated field current and voltage are those values needed for the generator to operate at rated conditions. 4.10 Winding insula
47、tion 4.10.1 Thermal class Insulation systems used for the windings shall be of thermal class 130 or higher. 4.10.2 Withstand voltage tests Withstand voltage tests shall be in accordance with IEC 60034-1, Table 16. 4.11 Insulation against shaft current Suitable precautions shall be taken to prevent h
48、armful flow of shaft current and to earth the rotor shaft adequately. Any insulation needed shall preferably be arranged so that it can be measured while the generator is operating. Shaft voltage spikes caused by static excitation with controlled rectifiers shall be kept down by suitable means to no
49、n-critical values. These spikes could cause damage, for example the bearing Babbitt by breaking through the bearing oil film. 4.12 Over-speed test Rotors shall be tested at 1,2 times rated speed for 2 min. 4.13 Critical speeds Critical speeds of the combined shaft train shall not cause unsatisfactory operation within the speed range corresponding to the frequency range agreed upon in accordance with 4.6 (see also IEC 60045-1). 4.14 P-Q capability diagram The manufacturer shall supply a P
