1、BSI Standards PublicationFire prevention measures on converters for high-voltagedirect current (HVDC) systems,static var compensators (SVC) and flexible ac transmission systems (FACTS) and their valve hallsPD IEC/TR 62757:2015National forewordThis Published Document is the UK implementation of IEC/T
2、R 62757:2015.The UK participation in its preparation was entrusted to TechnicalCommittee PEL/22, Power electronics.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract.
3、Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 82645 0ICS 13.220.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authorit
4、y of theStandards Policy and Strategy Committee on 31 August 2015.Amendments/corrigenda issued since publicationDate Text affectedPUBLISHED DOCUMENTPD IEC/TR 62757:2015IEC TR 62757:2015 IEC 2015 3 8.1 General . 24 8.2 Design considerations for an installed fire suppression system . 25 8.3 Types of f
5、ire extinguishing agents . 26 8.3.1 List of agents . 26 8.3.2 Carbon dioxide 26 8.3.3 Inert gases 26 8.3.4 Hydro fluorocarbons 26 8.3.5 Other gases . 27 8.4 Installation requirements . 27 8.5 Guidelines for fire extinguishing agents . 27 9 Vent management . 28 9.1 General . 28 9.2 Design considerati
6、ons . 29 9.2.1 General . 29 9.2.2 Natural ventilation 29 9.2.3 Forced ventilation 30 9.2.4 Design . 30 10 Control and integration of fire detection, fire protection and converter control systems . 30 10.1 General . 30 10.2 Fire alarm classification 31 10.2.1 General . 31 10.2.2 Classification by det
7、ection principle . 32 10.2.3 Classification by detection objective 32 10.2.4 Detection system reliability 33 10.3 Fire control system . 33 10.3.1 General . 33 10.3.2 Basic system functions 33 10.3.3 Other system components . 34 10.3.4 Outline of system design . 34 10.4 Guidelines for integrated fire
8、 control systems 35 11 Fire fighting and maintenance 35 11.1 General . 35 11.2 Role of station and fire fighting personnel . 35 11.2.1 General . 35 11.2.2 Actions in case of a fire . 35 11.2.3 Fire fighting . 36 12 Guidance for purchaser specifications . 36 12.1 General . 36 12.2 Purchaser specifica
9、tion . 36 12.2.1 General . 36 12.2.2 Semiconductor valves 37 12.2.3 Other valve hall equipment 38 12.2.4 Valve hall construction . 38 12.2.5 Fire detection systems . 38 12.2.6 Fire suppression systems 39 12.2.7 Vent management system 39 12.2.8 Fire alarm and control systems 39 Annexe A (informative)
10、 Valve hall fire hazards and survey of fire incidents 40 PD IEC/TR 62757:2015 4 IEC TR 62757:2015 IEC 2015 A.1 General . 40 A.2 Hazard categories . 40 A.3 Reports from HVDC users . 41 A.4 Reported incidents 42 A.4.1 Overheating of valve components due to reduced cooling 42 A.4.2 Valve component fail
11、ures . 44 A.4.3 Loose or high resistance connections in the load current carrying circuit . 57 A.4.4 Failure of auxiliary circuit electrical connections 58 A.4.5 Insulation failures 58 A.4.6 Failures of equipment associated with the valve hall 61 A.4.7 False alarms 62 A.4.8 Unknown causes . 63 A.5 C
12、onclusion and recommendations . 63 Bibliography 65 Figure 1 Types of ventilation 29 Figure 2 Possible arrangements and interconnections of an integrated fire detection and control system 32 Table 1 Fire extinguishing agents 26 Table A.1 HVDC converters owners/suppliers reference list (May 2012) 41 P
13、D IEC/TR 62757:2015IEC TR 62757:2015 IEC 2015 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIRE PREVENTION MEASURES ON CONVERTERS FOR HIGH-VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS, STATIC VAR COMPENSATORS (SVC) AND FLEXIBLE AC TRANSMISSION SYSTEMS (FACTS) AND THEIR VALVE HALLS FOREWORD 1) The Internat
14、ional 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 electron
15、ic 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;
16、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 Standa
17、rdization (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 as possible, an international consensus of opinion on the relevant subjects since each technical committee has rep
18、resentation from 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, I
19、EC cannot be 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 publ
20、ications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some are
21、as, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 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 includ
22、ing individual experts and members of its technical committees and IEC National Committees for any personal injury, property 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 relian
23、ce upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this 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 ele
24、ments of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. However, a technical committee may propose the publication of a technic
25、al report when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art“. IEC/TR 62757, which is a technical report, has been prepared by subcommittee 22F: Power electronics for electrical transmission and distributio
26、n systems, of IEC technical committee 22: Power electronic systems and equipment. PD IEC/TR 62757:2015 6 IEC TR 62757:2015 IEC 2015 The text of this technical report is based on the following documents: Enquiry draft Report on voting 22F/347/DTR 22F/353A/RVC Full information on the voting for the ap
27、proval of this technical report can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indic
28、ated on the IEC website 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 edition, or amended. PD IEC/TR 62757:2015IEC TR 62757:2015 IEC 2015 7 FIRE PREVENTION MEASURES ON CONVERTERS FOR
29、HIGH-VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS, STATIC VAR COMPENSATORS (SVC) AND FLEXIBLE AC TRANSMISSION SYSTEMS (FACTS) AND THEIR VALVE HALLS 1 Scope IEC TR 62757, which is a technical report, deals with fire prevention measures on converters and their valve halls for high voltage direct current (HVD
30、C) systems, static VAR compensators (SVC) and flexible AC transmission systems (FACTS). It is intended to be primarily for the use of the utilities and consultants who are responsible for issuing technical specifications for new converter valves and valve halls. It concerns fire incidents in HVDC pr
31、ojects using line commutated converters (LCC) or voltage sourced converter (VSC) technology and it is from these projects that most examples of fires and fire incidents are taken. This technical report also addresses converter valves and valve halls for SVC and FACTS. This technical report provides
32、general recommendations to be considered while preparing specifications for these systems. Specific requirements for a particular project need to be clearly specified and mutually agreed upon between the supplier and the purchaser. 2 Normative references The following documents, in whole or in part,
33、 are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Void. 3 Terms and definitions For the purpose of thi
34、s document the following terms and definitions apply. 3.1 alarm system installation for initiating a fire alarm 3.2 automatic fire detector device that detects abnormally high temperature, rate of temperature rise, visible or invisible particles, infra-red or visible radiation, or gases produced by
35、a fire 3.3 automatic fire extinguishing system any system designed and installed to detect a fire and subsequently discharge an extinguishing agent without the necessity of human intervention 3.4 burn, intransitive verb undergo combustion SOURCE: ISO 13943:2008, 4.28 PD IEC/TR 62757:2015 8 IEC TR 62
36、757:2015 IEC 2015 3.5 burn, transitive verb cause combustion SOURCE: ISO 13943:2008, 4.29 3.6 ignite, intransitive verb catch fire with or without the application of an external heat source SOURCE: ISO 13943:2008, 4.184 3.7 ignite, transitive verb initiate combustion SOURCE: ISO 13943:2008, 4.185 3.
37、8 char, noun carbonaceous residue resulting from pyrolysis or incomplete combustion SOURCE: ISO 13943:2008, 4.38 3.9 char, verb form char SOURCE: ISO 13943:2008, 4.39 3.10 combustion exothermic reaction of a substance with an oxidizing agent Note 1 to entry: Combustion generally emits fire effluent
38、(4.105) accompanied by flames (4.133) and/or glowing (4.168). SOURCE: ISO 13943:2008, 4.46 3.11 exit designated point of departure from a building SOURCE: ISO 13943:2008, 4.86 3.12 explosion abrupt expansion of gas that can result from a rapid oxidation (see 4.245 of ISO 13943:2008), decomposition r
39、eaction or other means, with or without an increase in temperature SOURCE: ISO 13943:2008, 4.87 3.13 extinguishing medium extinguishing agent solid, liquid or gaseous substance especially suited to the extinction of fires PD IEC/TR 62757:2015IEC TR 62757:2015 IEC 2015 9 3.14 fire process of combusti
40、on characterized by the emission of heat accompanied by smoke and/or flame 3.15 fire alarm alarm alarm signal for alerting the fire service or people endangered by fire 3.16 fire alarm box call box pull station part of a fire alarm system from which a fire call is made, either by hand or automatical
41、ly 3.17 fire barrier fire separation separating element which provides, for a stated period of time, simultaneous integrity and thermal insulation under specified test conditions SOURCE: ISO 13943:2008, 4.99 3.18 fire control system system which provides integrated control of fire detection, fire al
42、arm, fire suppression, smoke management and other services as part of a total fire protection scheme 3.19 fire damper smoke damper mechanical plate or shutter which is closed to restrict the passage of fire/smoke in a flue or duct 3.20 fire department connection connection through which the fire dep
43、artment can pump supplemental water into the sprinkler system, standpipe, or other system furnishing water for fire extinguishment to supplement existing water supplies 3.21 fire door door of at least 30 min fire resistance which is prescribed for fire safety reasons and which has to be kept closed
44、in accordance with the authorities instructions 3.22 fire hazard physical object or condition with a potential for an undesirable consequence from fire SOURCE: ISO 13943:2008, 4.112 3.23 fire load quantity of heat which can be released by the complete combustion of all the combustible materials in a
45、 volume, including the facings of all bounding surfaces SOURCE: ISO 13943:2008, 4.114, modified The notes have been deleted. PD IEC/TR 62757:2015 10 IEC TR 62757:2015 IEC 2015 3.24 fire suppression system any system provided for the extinguishing of a fire 3.25 fire wall partition wall of specified
46、fire resistance rating 3.26 fire-fighting all measures involved in the combat against fire 3.27 flame, noun rapid, self-sustaining, sub-sonic propagation of combustion in a gaseous medium, usually with emission of light SOURCE: ISO 13943:2008, 4.133 3.28 flame, verb produce flame SOURCE: ISO 13943:2
47、008, 4.134 3.29 flammable capable of flaming combustion (see 4.148 of ISO 13943:2008) under specified conditions SOURCE: ISO 13943:2008, 4.153 3.30 foam emulsive extinguishing agent, consisting of water, bubbles of gas or air, and a foam stabilizer (foam compound which is used to extinguish burning
48、liquids) 3.31 heat release rate burning rate (deprecated) rate of burning (deprecated) rate of thermal energy production generated by combustion Note 1 to entry: The typical units are watts (W). SOURCE: ISO 13943:2008, 4.177 3.32 ignite, intransitive verb catch fire with or without the application o
49、f an external heat source SOURCE: ISO 13943:2008, 4.184 3.33 ignite, transitive verb initiate combustion, light SOURCE: ISO 13943:2008, 4.185 PD IEC/TR 62757:2015IEC TR 62757:2015 IEC 2015 11 3.34 ignition sustained ignition (deprecated) general: initiation of combustion SOURCE: ISO 13943:2008, 4.187 3.35 ignitability, ease of ignition measure of the ease with which a test specimen can be ignited, under specified conditions; ignition time, conditions; ignition time
