1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationHigh-voltage switchgear and controlgear Part 303: Use and handling of sulphur hexafluoride (SF6)PD CLC/TR 62271-303:2009Copyright European Committee for Electrotechnical Standard
2、ization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-National forewordThis Published Document is the UK implementation of CLC/TR 62271-303:2009. It is identical to IEC/TR 62271-303:2008.The UK participation in its prepar
3、ation was entrusted by Technical CommitteePEL/17, Switchgear, controlgear, and HV-LV co-ordination, to SubcommitteePEL/17/1, High-voltage switchgear and controlgear.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to i
4、nclude all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2010 ISBN 978 0 580 67445 7 ICS 29.130.10Compliance with a British Standard cannot confer immunity from legal obligations.This Published Document was published under the authority of the Standard
5、s Policy and Strategy Committee on 28 February 2010Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDPD CLC/TR 62271-303:2009Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networ
6、king permitted without license from IHS-,-,-TECHNICAL REPORT CLC/TR 62271-303 RAPPORT TECHNIQUE TECHNISCHER BERICHT September 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central
7、Secretariat: Avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. CLC/TR 62271-303:2009 E ICS 29.130.10 English version High-voltage switchgear and controlgear - Part 303: Use and handling of sulph
8、ur hexafluoride (SF6) (IEC/TR 62271-303:2008) Appareillage haute tension - Partie 303: Utilisation et manipulation de lhexafluorure de soufre (SF6) (CEI/TR 62271-303:2008) Hochspannungs-Schaltgerte und -Schaltanlagen - Teil 303: Gebrauch von und Umgang mit Schwefelhexafluorid (SF6) (IEC/TR 62271-303
9、:2008) This Technical Report was approved by CENELEC on 2009-07-03. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembo
10、urg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. PD CLC/TR 62271-303:2009Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or
11、networking permitted without license from IHS-,-,-CLC/TR 62271-303:2009 - 2 - Foreword The text of the Technical Report IEC/TR 62271-303:2008, prepared by SC 17A, High-voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was circulated for voting in accordance with the Inter
12、nal Regulations, Part 2, Subclause 11.4.3.3 (simple majority) and was approved by CENELEC as CLC/TR 62271-303 on 2009-07-03. Annex ZA has been added by CENELEC. _ PD CLC/TR 62271-303:2009Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot f
13、or ResaleNo reproduction or networking permitted without license from IHS-,-,- 3 - CLC/TR 62271-303:2009 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of
14、this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE Where an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD app
15、lies. Publication Year Title EN/HD Year IEC 60050-441 - 1)International Electrotechnical Vocabu-lary (IEV) - Chapter 441: Switchgear, controlgear and fuses - - IEC 60376 - 1)Specification of technical grade sulfur hexafluoride (SF6) for use in electrical equipment EN 60376 2005 2)IEC 60480 - 1)Guide
16、lines for the checking and treat-ment of sulphur hexafluoride (SF6) taken from electrical equipment and specification for its re-use EN 60480 2004 2)IEC 62271-1 - 1)High-voltage switchgear and controlgear - Part 1: Common specifications EN 62271-1 2008 2)IEC 62271-100 - 1)High-voltage switchgear and
17、 controlgear - Part 100: Alternating current circuit-breakers EN 62271-100 2009 2) 1)Undated reference. 2)Valid edition at time of issue. PD CLC/TR 62271-303:2009Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction
18、or networking permitted without license from IHS-,-,- 2 TR 62271-303 IEC:2008 CONTENTS INTRODUCTION.7 1 Scope.8 2 Normative references .8 3 Terms and definitions .8 4 Storage and transportation of SF611 4.1 Storage of containers filled with SF611 4.2 Transportation of containers filled with SF6.13 4
19、.3 Storage and transportation of electric power equipment containing SF6.14 4.4 Responsibilities .14 5 Safety and first aid .14 5.1 General safety rules 14 5.1.1 Protection of personnel15 5.1.2 Handling of contaminated safety equipment and tools .16 5.1.3 Pressurised equipment and tools or measuring
20、 devices.17 5.1.4 Personal safety and protective equipment .17 5.1.5 Facilities and services .18 5.2 Additional safety measures in case of abnormal release of SF6due to external fire or internal arc fault.18 5.3 First aid equipment and treatment .19 5.3.1 Irritation of the skin19 5.3.2 Irritation of
21、 the eyes.19 5.3.3 Breathing difficulty.20 6 Training and certification 20 6.1 General .20 6.2 Training modules.20 6.2.1 Module A Awareness 21 6.2.2 Module B1 Maintenance not implying gas recovery.21 6.2.3 Module B2 Installation and commissioning22 6.2.4 Module C1 Maintenance implying gas recovery 2
22、2 6.2.5 Module C2 Decommissioning of electric power equipment at the end-of-life23 6.3 Certification.23 7 SF6handling during installation and commissioning .23 7.1 Evacuation, filling and checking the SF6quality after filling .23 7.2 Topping-up of SF6pre-filled compartments to the rated pressure/den
23、sity 25 7.3 Filling sealed pressure systems.27 8 SF6handling during normal service life 27 8.1 Re-filling of SF6to the nominal pressure/density .27 8.2 Checking the SF6quality.28 8.2.1 Measurement of the SF6quality with portable equipment.29 8.2.2 Sampling and shipment of SF6for off-site analysis 29
24、 9 SF6recovering and reclaiming during maintenance30 9.1 Recovery and reclaiming of SF6from any compartment of controlled and/or closed pressure systems containing non-arced and/or normally arced SF630 PD CLC/TR 62271-303:2009Copyright European Committee for Electrotechnical Standardization Provided
25、 by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TR 62271-303 IEC:2008 3 9.2 Recovery and reclaiming from any compartment of controlled and/or closed pressure systems containing heavily arced SF6.32 10 Dismantling of SF6electric pow
26、er equipment at the end-of-life .34 10.1 End-of-life of controlled and/or closed pressure systems .35 10.2 End-of-life of sealed pressure systems 35 10.3 Recovery and reclaiming of SF6at the end-of-life of sealed pressure systems 36 10.4 Dismantling of electric power equipment at the end-of-life .38
27、 10.5 By-products at the end-of-life 39 11 Description of SF6handling equipment.40 11.1 Reclaimer40 11.1.1 External and internal pre-filters41 11.1.2 Filters41 11.1.3 Vacuum pump .42 11.1.4 Main and auxiliary compressors.43 11.1.5 External and internal gas storage containers .43 11.1.6 Evaporator an
28、d gas storage container heater 43 11.1.7 Gas piping and pipe junctions43 11.1.8 Control instruments .43 11.1.9 Safety valves.44 11.2 Flexible hose connections .44 11.3 Portable devices for gas measurement44 11.3.1 Dew point meter 44 11.3.2 SF6percentage measuring device.45 11.3.3 Reaction tubes sens
29、itive to SO245 11.3.4 Portable SF6detectors 45 11.3.5 Alarm system SF6detectors 46 11.4 Cylinder for gas samples .46 Annex A (informative) Sulphur hexafluoride .47 Annex B (informative) Environmental effects of SF6.51 Annex C (informative) SF6by-products 54 Annex D (informative) Potential effects on
30、 health of SF6by-products.57 Bibliography76 Figure 1 Commissioning or re-commissioning of SF6compartments 24 Figure 2 Topping-up of SF6pre-filled compartments to the rated pressure/density.26 Figure 3 SF6re-filling to the nominal pressure/density .28 Figure 4 Checking the SF6quality on-site 29 Figur
31、e 5 SF6sampling and shipment .30 Figure 6 Recovering and reclaiming from any compartment of controlled and/or closed pressure systems containing non-arced and/or normally arced SF6.31 Figure 7 Recovering and reclaiming from any compartment of controlled and/or closed pressure systems containing heav
32、ily arced SF6.33 Figure 8 End-of-life of controlled and/or closed pressure systems35 Figure 9 End-of-life of sealed pressure systems.36 Figure 10 SF6recovery and reclaiming at the end-of-life of sealed pressure systems 37 Figure 11 Dismantling of electric power equipment 39 Figure 12 General purpose
33、 reclaimer .41 PD CLC/TR 62271-303:2009Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 4 TR 62271-303 IEC:2008 Figure A.1 Pressure/temperature/density chara
34、cteristics for SF69.48 Table 1 Methods for storage of SF6.12 Table 2 Container types and labelling required for storage and transportation of SF6.13 Table 3 International regulations for shipment of SF6.14 Table 4 Measures when working with SF6electric power equipment 15 Table 5 Safety measures when
35、 opening and/or accessing gas compartments 16 Table 6 Neutralising solutions 17 Table 7 Additional safety measures .19 Table 8 Commissioning or re-commissioning of SF6compartments25 Table 9 Topping-up of SF6pre-filled compartments to the rated pressure/density 27 Table 10 SF6re-filling to the nomina
36、l pressure/density 28 Table 11 Checking the SF6quality on-site .29 Table 12 SF6sampling and shipment.30 Table 13 Recovering and reclaiming from any compartment of controlled and/or closed pressure systems containing non-arced and/or normally arced SF6.32 Table 14 Recovering and reclaiming from any c
37、ompartment of controlled and/or closed pressure systems containing heavily arced SF6.34 Table 15 SF6recovery at the end-of-life of sealed pressure systems .38 Table 16 Expected SF6characteristics and quantity of by-products .40 Table 17 Typical filter types used during SF6reclaiming 42 Table 18 Gas
38、measuring devices .44 Table A.1 Main chemical characteristics of SF69.47 Table A.2 Main physical characteristics of SF6949 Table A.3 Main electrical characteristics of SF69 49 Table D.1 TLVs for SOF2, SO2, HF, and S2F1060 Table D.2 Results of example calculations for leakage situations.63 Table D.3
39、Results for leakage situations taking account of SOF2hydrolysis 64 Table D.4 Sample calculation of S2F10concentration for partial discharges .65 Table D.5 Sample calculation of S2F10concentration for corona discharges 66 Table D.6 Sample calculation of S2F10concentration for disconnector sparking.67
40、 Table D.7 Sample calculation of SOF2concentrations for internal fault situations 68 Table D.8 Switchgear volume and filling pressure 71 Table D.9 Arc energies for interruptions.72 Table D.10 Arc energies for internal faults .72 Table D.11 SOF2production rates .73 Table D.12 Quantities of SOF2formed
41、.73 Table D.13 SF6leakage rates 73 Table D.14 SOF2leakage rates .74 PD CLC/TR 62271-303:2009Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TR 62271-303 IEC:
42、2008 7 INTRODUCTION SF6technology is used in switchgear and controlgear, for more than 30 years. Its application is mainly in electric power equipment for rated voltages exceeding 1 kV up to the highest rated voltages for which switchgear and controlgear are manufactured. It is estimated that severa
43、l millions of the different types of SF6-filled units are currently in service. Three methods for gas containment are technically available, according to IEC 62271-1: controlled pressure system; NOTE 1 Controlled pressure systems are no longer used for new equipment, because of the unacceptable leak
44、age rate (see IEC 62271-203). closed pressure system: modern high-voltage electric power equipments. The standardized values for leakage rates are 0,5 % and 1 % per year and per gas-filled compartment; sealed pressure system: modern medium-voltage electric power equipments (commercially designated a
45、s “sealed for life products” or “hermetically sealed systems”). The tightness of sealed pressure systems is specified by their expected operating life. The expected operating life with regard to leakage performance is specified by the manufacturer. Preferred values are 20, 30 and 40 years. NOTE 2 To
46、 fulfil the expected operating life requirement the leakage rate of the SF6sealed pressure systems is considered to be less than 0,1 % per year. The long experience with the use of SF6in switchgear and controlgear evidences that a certain number of elementary precautions and procedures should be ado
47、pted in order to achieve operational, safety at work and environmental benefits such as: safe operation of the equipment; optimisation of resources and tools required; minimisation of out-of-service time for equipment; standard training of personnel handling SF6; reduction of the amount of gas relea
48、sed during handling operations down to the functional physical limit; avoidance of any deliberate release, for example flushing to the atmosphere; reduction of SF6losses and emissions during commissioning, service, operation and end-of-life treatment to a minimum. Recently, the latest practical recommendations on the use of SF6technology applied to switchgear and controlgear have been published by WG B3.02 of CIGRE Study Committee B3 11. This information i
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