1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21368-8 SANS 60034-3:2008 Edition 3 IEC 60034-3:2007 Edition 6SOUTH AFRICAN NATIONAL STANDARD Rotating electrical machines Part 3: Specifi
4、c requirements for synchronous generators driven by steam turbines or combustion gas turbines This national standard is the identical implementation of IEC 60034-3:2007 and is adopted with the permission of the International Electrotechnical Commission. WARNING Can only be used in conjunction with S
5、ANS 60034-1. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa This standard may only be used and printed by approved subscription and freemailing clie
6、nts of the SABS.SANS 60034-3:2008 Edition 3 IEC 60034-3:2007 Edition 6 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee StanSA TC 61, Rotating electrical machines, in accordance with procedures of Standards South Africa, in compl
7、iance with annex 3 of the WTO/TBT agreement. This SANS document was published in April 2008. This SANS document supersedes SANS 60034-3:2006 (edition 2). This standard may only be used and printed by approved subscription and freemailing clients of the SABS. IEC 60034-3 Edition 6.0 2007-11 INTERNATI
8、ONAL STANDARD NORME INTERNATIONALE Rotating electrical machines Part 3: Specific requirements for synchronous generators driven by steam turbines or combustion gas turbines Machines lectriques tournantes Partie 3: Rgles spcifiques pour les alternateurs synchrones entrans par turbines vapeur ou par t
9、urbines gaz combustion INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE U ICS 29.160 PRICE CODE CODE PRIX ISBN 2-8318-9371-2 SANS 60034-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS. 2 60034-3 IEC:200
10、7 CONTENTS FOREWORD.4 1 Scope.6 2 Normative references .6 3 Terms and definitions .6 4 General 7 4.1 General rules 7 4.2 Rated conditions .7 4.3 Rated voltage7 4.4 Power factor7 4.5 Rated speed7 4.6 Ranges of voltage and frequency 8 4.7 Direction of rotation.8 4.8 Stator winding .9 4.9 Generator rat
11、ed field current and voltage 9 4.10 Winding insulation .9 4.10.1 Thermal class9 4.10.2 Withstand voltage tests .9 4.11 Insulation against shaft current9 4.12 Over-speed test.9 4.13 Critical speeds 9 4.14 P-Q capability diagram 9 4.15 Overcurrent requirements11 4.16 Sudden short circuit 11 4.17 Short
12、-circuit ratio.12 4.18 Direct axis transient and subtransient reactances for generators .12 4.19 Tolerances on short-circuit ratio and direct axis transient and subtransient reactances 12 4.20 Mechanical conditions for rotors12 4.20.1 Number of starts12 4.20.2 Turning gear operation 12 4.21 Coolers
13、.13 5 Air-cooled generators .13 5.1 General .13 5.2 Generator cooling13 5.3 Temperature of primary coolant.13 5.3.1 Temperature detectors 14 6 Hydrogen-cooled or liquid-cooled generators14 6.1 General .14 6.2 Hydrogen pressure and purity in the casing.14 6.3 Generator housing and cover plates 14 6.4
14、 Stator winding terminals 14 6.5 Temperature of primary coolants, temperatures and temperature rises of the generator 14 6.6 Temperature detectors 15 6.7 Auxiliary system 15 SANS 60034-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.60034
15、-3 IEC:2007 3 7 Generators for combustion gas turbines or combined cycle applications.16 7.1 General .16 7.2 Service conditions .16 7.2.1 General .16 7.2.2 Primary coolant temperature16 7.2.3 Number of starts16 7.2.4 Application of load.16 7.3 Rated output .16 7.4 Capabilities .17 7.4.1 General .17
16、7.4.2 Base capability17 7.4.3 Temperature rise and temperature at base capability.18 7.4.4 Peak capability19 7.5 Rating plate.19 7.6 Temperature tests .19 Annex A (normative) Precautions to be taken when using hydrogen cooled turbine- driven synchronous generators .20 Bibliography27 Figure 1 Operati
17、on over ranges of voltage and frequency 8 Figure 2 Typical P-Q capability diagram.10 Figure 3 Typical generator capability curves 18 Figure A.1 Example of a large hydrogen supply unit feeding one or more generators (simplified diagram) 26 SANS 60034-3:2008This standard may only be used and printed b
18、y approved subscription and freemailing clients of the SABS. 4 60034-3 IEC:2007 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ROTATING ELECTRICAL MACHINES Part 3: Specific requirements for synchronous generators driven by steam turbines or combustion gas turbines FOREWORD 1) The International Electrot
19、echnical 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
20、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 Nation
21、al 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 (IS
22、O) 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 as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation f
23、rom all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be
24、held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any
25、 divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publica
26、tion. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, proper
27、ty damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in th
28、is publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any o
29、r all such patent rights. International Standard IEC 60034-3 has been prepared by IEC Technical Committee 2: Rotating machinery. This sixth edition cancels and replaces the fifth edition published in 2005. This edition constitutes a technical revision. The significant technical changes with respect
30、to the previous edition 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. SANS 60034-3:2008This
31、 standard may only be used and printed by approved subscription and freemailing clients of the SABS.60034-3 IEC:2007 5 The text of this standard is based on the following documents: FDIS Report on voting 2/1461/FDIS 2/1474/RVD Full information on the voting for the approval of this standard can be f
32、ound in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of IEC 60034 series, published under the general title Rotating electrical machines, can be found on the IEC website. The committee has
33、decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised editi
34、on, or amended. SANS 60034-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS. 6 60034-3 IEC:2007 ROTATING ELECTRICAL MACHINES Part 3: Specific requirements for synchronous generators driven by steam turbines or combustion gas turbines 1 Sco
35、pe This part of IEC 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 sp
36、ecific requirements 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 gener
37、ators; parts of the 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 dr
38、iven by water (hydraulic) 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 reference
39、s, only the edition 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
40、machine quantities 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.
41、SANS 60034-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.60034-3 IEC:2007 7 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 equilib
42、rium of the turbine and/or rotor 4 General 4.1 General rules Turbine driven synchronous generators shall be in accordance with the basic requirements for rotating machines specified in IEC 60034-1 unless otherwise specified in this standard. Wherever in this standard there is reference to an agreeme
43、nt, it shall be understood that this is an agreement between the manufacturer and the purchaser. 4.2 Rated conditions The rated conditions are given by the rated values of the apparent power; frequency; voltage; power factor; primary coolant temperature (40C unless otherwise agreed upon); and where
44、applicable, site altitude; hydrogen pressure; range of hydrogen purity, see IEC 60034-1. 4.3 Rated voltage The rated voltage shall be fixed 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 t
45、erminals 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 generator. 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 shal
46、l be 3 000/p min 1for 50 Hz generators; 3 600/p min 1for 60 Hz generators; where p is the number of pole pairs. SANS 60034-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS. 8 60034-3 IEC:2007 4.6 Ranges of voltage and frequency Generators
47、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 60034-1 shall apply at the rated voltag
48、e 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 shaded area causes temperature rises to i
49、ncrease by up to 10 K approximately. Generators will also carry output at rated power factor within the ranges of 5 % in voltage and 3 5 + % in frequency, as defined by the outer boundary of Figure 1, but temperature rises will be further increased. Therefore, to 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 o
